If you use 40 MHz channel the max data rate will be 270 Mbps and 300 Mbps for long and short guard interval respectively. 11ax Data rates mentioned in. Following are the advantages of bank overdraft: 1. WifiHelper::SetStandard()¶ WifiHelper::SetStandard is a method required to set various parameters in the Mac and Phy to standard values, but also to check that the channel settings as described above are allowed. VHT frame format support - mandatory; 20, 40 and 80MHz channel support - mandatory. 1 ATWINC3400-MR210CA Module Placement and Routing Guidelines - Added ATWINC3400-MR210CA for the section name - - Updated Figure 13-2 8. Page 1 of 1. 1) Go to the Wireless page. 1. Most importantly, 802. Noonan syndrome is typically inherited in an autosomal dominant manner. This is optimistic, because as we discussed, environmental radio properties affect data rates making it unlikely that a client will ever be able to receive such a high. 5Gbps. Home Loan Guarantees. g. Somehow on your config RPi 3b+ wifi speed improves to ~100 Mbit/s when wmm_enabled=1. 11n short GI工作原理？. e. 3. Support of the 400ns GI is optional for transmitting and receive. Gastrointestinal (GI) emergencies in neonates and infants can occur anywhere from the beginning to the end of the GI tract. Otherwise, it is 0. GERD, diarrhea and colorectal cancer are examples of gastrointestinal diseases. Wish you all the best, and have fun! Questions and Answers. Sự khác biệt giữa 2 khái niệm Long Position và Short Position là hướng từ giả định thị trường. 4GHz 802. These cells have some features in common with nerve cells but also have other features in common with hormone-producing (endocrine) cells. Each train is equivalent to a symbol. 4 µs) by default and increase the speed by almost 10%. UPnP feature needs the support of operating system (e. WLAN links several wireless devices by using the RF (Radio Frequency). New Xbox Family Settings features available to help manage gaming in Tech News. Urban drainage systems that incorporate elements of green infrastructure (SuDS/GI) are central features in Blue-Green and Sponge Cities. 11ac has only 10 MCS values irrespective of channel width and spatial streams unlike 802. 11ax. 11n/ac, where the value of the guard interval is set to 400ns instead of general 800ns. transmits data using a 400 ns guard Interval. 3. A data frame, or simply called a “ frame ” is a package of data exchanged between wireless devices. Table 38 Hardware series. Other diseases have symptoms, and there are also visible irregularities in the GI tract. 11g, 802. absorption - nutrient transfer 6. mechanical breakdown - make food smaller 4. 1. The extreme variation of GIs. They will not work, no way no how. Enter radio interface view. Source: New Features Available Today on the Xbox Family Settings App to Help. since 802. Tips: 1. There are no obvious gaps in this topic, but there may still be some posts missing at the end. PHY Features IEEE 802. The available bands depend on the selected platform. 11ax) features on this SSID. A scheme could be developed to work out whether a short guard interval would be of benefit to a particular link. Short Guard Interval - Enables/Disables Short Guard Interval. Examples. Supports multiple operation modes: Access Point, Multi-SSID, Client, and Range Extender modes. If it does not support - tell us which wifi card to take to support 5ghz? Wiphy phy0 max # scan SSIDs: 20 max scan IEs length: 425 bytes max # sched scan SSIDs: 20 max # match sets: 11 max # scan plans: 2 max scan plan interval: 65535 max scan plan iterations: 254 Retry short limit: 7 Retry long limit: 4 Coverage class: 0 (up to. Nipitphon Na Chiangmai /EyeEm/Getty Images. bin and place it in tftp server directory. In the few short years since their discovery, GIs have already been associated with many important adaptive functions that contribute to different microbes' unique life styles. 11n specification. Note that option htmode should be set to either HT40+ (for channels 1-7) or HT40- (for channels 5-11) or simply HT40 . Short GI = good, association and signal is robust, so wireless frames use a shorter interval spacing to save time on the channel, thus increasing throughput. Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. Please contact Silex for more support W_DISABLE# pin (MiniPCIe and M. These will take effect if the wireless client support IEEE802. PMMA is also known as acrylic, acrylic glass, as well as by the trade. GI tract is a food "disassembly" line where nutrients become more available with each successive step Essential activities: 1. stomach – holds and grinds food, mixing it with hydrochloric acid and pepsin. MCS = higher is better. 11a/g 所做的改进。 射频芯片在使用 OFDM 调制方式发送数据时，整个帧是被划分成不同的数据块进行发送的，为了数据传输的可靠性，数据块之间会有 GI ，用以保证接收侧能够正确的解析出各个数据块。 I usually disable AP handoff and frequency handoff. 400ns GI (Guard Interval) 256 QAM; 5/6 Coding Rate; 1300 Mbps under all of the max condition < Wave 2 > 4 x 4 : 4 Data Streams or 8 x 8 : 8 Data Streams Max; Transmission BeamForming (based on Explicit CSI) AP support MU-MIMO; Max 160 Mhz; 800ns GI (Guard Interval) 256 QAM; 5/6 Coding Rate; 3466. 802. larger anteroposterior diameter (mean 2. 5. Food is broken down mechanically—through chewing, for example, and. <sysname> system-view [sysname] interface WLAN-Radio2/0 [sysname-WLAN-Radio2/0] undo short-gi enable. 11ac will includeIn any event - short GI is nice, but a client can ask for long GI dependent on range and other considerations to improve overall robustness of the session - 11n/11ac client chipsets are pretty smart about this (goes to beamforming and other items) Not sure what barker preamble is, never heard of it. This includes bandwidth, modulation type, and number of streams, among other things. Use undo short-gi to restore the default. The guard interval is the pause between transmitted RF symbols. A short guard interval of 400 nanoseconds (ns) works in most office environments as distances between points of reflection, as well as between clients, are short. Short Guard interval (400ns) - optional (though optional but is widely supported). This gi also includes reinforced knee pads, high definition embroideries, and COOLMAX fabric lining inside the jacket to help keep you cool during long training sessions. 1. WA6638i. To ensure data transmission reliability, the guard interval (GI) is used between the data blocks to ensure that the receive end correctly parses each data block. 1. Select 20MHz or 40MHz channel width. This option is only available for 2. In simpler terms, GI is a status accorded to a good which is unique to a particular region or area, and are originated from there. Check user mobility: A highly mobile user can remain hidden for a short time period during testing, then get. With their new Estilo 6. [1] In a broader sense, one may consider such a. 11ac clients can take advantage of, as legacy systems are not able to understand the new format of the larger packets. HITCH-KICK: The majority of athletes who employ this style of jump should use a single -step arm and leg cycle (see above). It can be enabled or disabled on your network to enhance the stability of your wireless network. Early visceral disease, such as gastrointestinal (GI) involvement, is associated with significant morbidity and a poorer prognosis. network-admin. What Is the Working Process of 802. Introduction. 1. DD-WRT Forum Index-> Atheros WiSOC based Hardware: View previous topic:: View next topic Network adapter settings can be adjusted from Control Panel -> Network and Internet -> Network and Sharing Center -> Change adapter settings -> right-click on your network adapter and choose "Properties" -> click the "Configure" button. The small bowel connects to the large bowel, also called the large intestine or colon. A number of particular facial features may be present in some people with 22q11. Each transmission burst in 802. HITCH-KICK: The majority of athletes who employ this style of jump should use a single -step arm and leg cycle (see above). The higher the MCS index is, the more throughput is supported by the corresponding modulation schema. It provides a large number of new features, including increased throughput and faster speeds, and support for more concurrent connections. The GI tract is a long tube of varying diameter beginning at the mouth and ending in the anus. Learn more. feature definition: 1. Ensure to keep at least 6 dB lower value on 2. 2,501. Short GI ( Guard Interval ) diye geçen bu ayar, aslında paketlerdeki iletişim data miktarını küçülterek bağlantınıza hız olarak katkı sağlar. Select to enable the short guard interval for 802. Last edited by Cerawy; 13 Apr 2021 at 19:42. It is annoying when your speaker picks up unwanted sounds when you're gaming. Each model. The gastrointestinal tract in humans begins at the mouth, continuing through the oesophagus, stomach, and small and large intestines. Thereafter, forget SSID on WiFi clients and then test 5 GHz clients’ behavior. with 1 transmit and 1 receive path and is compatib le with the IEEE 802. The ileocecal region is the most commonly affected site; however, it can involve any part of the gastrointestinal tract (GIT). However, the mosaic nature and extreme variety of GIs increase the complexity of GI prediction . Assisting your GI organs along the way are your pancreas, gallbladder and liver. 4 GHz band cannot be configured if the standard is 802. 1 MHz CBW case with short and long Guard Interval (GI) subcases, following Equations (5). This allows for up to 63 different BSS color values. Our aim was to assess the prediction accuracy for PPGR prediction models with and without GI data in women. 11n networks can operate at 2. Single radio/antenna devices do not support mimo and still having trouble with inter symbol interference by multipath, especially in warehouses where barcodescanners are used. The purpose of this cycling motion is to counteract and reduce forward rotation during the jump. feature ý nghĩa, định nghĩa, feature là gì: 1. Symptoms included anorexia (26. 4µs ลดเวลารอครึ่งนึง ทำให้ส่งข้อมูลได้มากขึ้นในระยะเวลาที่. GI bleeding can be overt (eg, visible hemorrhage such as hematemesis, hematochezia, or melena) or occult (eg, positive fecal occult blood test or. 47 Gbpsのデータ. Short Guide Intervals (SGI, Short GI) - part of 802. a typical quality or an important part of something: 2. 24. the main characteristics were topography and external appearances in combination with microscopic features. 1. Features that favor ileocolic over small bowel intussusception 14: presence of a hyperechoic core, representing mesenteric fat. From 802. , 2018. H. Now, that provides minimum datarate of 130 Mbps (the minimum is with long guard interval and with 20 MHz channel). Using personal security mode for your. The glands of the digestive system consist of the tongue, salivary glands, liver, gall bladder, and pancreas. When examined, some diseases show nothing wrong with the GI tract, but there are still symptoms. But there’s more!802. MU-MIMO - The administrative status of the MU-MIMO feature for 2. WLAN is short for wireless local area network. Following is an example from an old 802. Short GI its Short Guard Interval, it means faster data rate (10 to 12% increase ) because of better spectrum utilization and fastest packet speed. . 11n supports a short GI of 400 ns, which provides a 10% increase in data rate. . 1. 618 without PET, and 0. Otherwise said, you should set a relatively short amount of time between the transmission of. 24. Another optional feature is using a shorter guard interval (GI), which is the amount of time (in nanoseconds) the system waits between transmitting OFDM (orthagonal frequency division multiplexing. Mặc khác, bạn có. Wireless networks use two frequency bands, 2. Due to local reflex circuits, the ENS is capable of functioning with and without input from the central nervous system. Gastrointestinal Symptoms in Autism Spectrum Disorder. 0. Parasympathetic nervous system anatomy The parasympathetic nervous system (PSNS) is a division of the autonomic nervous system (ANS) that controls the activity of the smooth and cardiac muscles and glands. This field is set to 1 to indicate that the 400 ns short guard interval is used for the data payload of the physical layer frame. If your delay is small (you can check it by monitoring the CCQ and ping value), it is recommended to enable short GI. Otherwise only Downlink performance (AP to STA) will improve • Part of Mixed mode frame format. This style is designed to set up secondary rotations of both the arms and leg s that mechanically counteract the rotations established• Enable Short GI - It is recommended to enable this function, for it will increase the data capacity by reducing the guard interval time. To help mitigate the effects of co-channel interference, 802. It is a new global wireless standard after 1G, 2G, 3G, and 4G networks. 11 standard by its listed capabilities. 2 us. Short Guard Interval - The administrative status of the Short Guard Interval feature for 2. 4) Alternatively, if your setup has all. , which involved 59254 patients from 11. 11b, 802. BED is characterized by a recurrent pattern of binge eating (i. This feature multiplies your options allowing you to place the AP in a position that is most convenient to get the best signal possible, such as on the wall or on the ceiling of your office. 0 Kudos. Dec 16, 2021. CRC is a common technique for detecting data transmission errors. In the screen shot above you will notice that Short Guard Interval and Aggregation are both disabled. There must be a GI between two adjacent symbols to avoid interference between each other. Alternatively, right-click on the Network adapter icon in the system tray and open Network and Sharing Center. According to Korstanje in his book, Advanced Forecasting with. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the cause of the global coronavirus disease 2019 (COVID-19) outbreak. Short GI = good, association and signal is robust, so wireless frames use a shorter interval spacing to save time on the channel, thus increasing throughput. In the British Health Improvement Network study [ 12 ], the prevalence of AD was significantly higher in patients with functional dyspepsia (FD. the collection of new evidence about GI features in children living in resource-limited. Select to enable the radio resource provision feature. GI Tag is used to ensure good quality of agricultural, natural, or manufactured goods. Devices should detect interference when using 40MHz, and drop back to 20MHz. It is difficult. Default. Data frames will be divided into several symbols when being transmitted. 1. Crohn's & Colitis Congress® The premier meeting on IBD. The primary underlying. 11ac maximum throughput (1300Mbps) requires all 802. 2 Sockets) Note that MiniPCIe and M. Interact with imagery layers by overlaying raster and analyses published as imagery layers. 29%) in the. Short Guard Interval (SGI), 20 and 40 MHz • Primarily used on AP side to reduce Guard interval between frames to improve performance • Helps improve data rate in Up/Down if both AP and STA support Short GI. Subtle Depth of Field. Convolutional Coding Rate: 1/2, 2/3, 3/4, and 5/6 since 802. Today, we are ⚡️electrified⚡️ to announce the latest stable release of the official IDE for building Android applications: Android Studio Electric Eel (2022. This feature is useful for guest and BYOD SSIDs that provide additional security to. 3 Gbpsのデータレートをサポートします。. 1 Potential features that make up green (and blue) infrastructure grouped into three scale groups Local scale Regional and national scale EU level Descriptor Natural and semi-natural ecosystems e. The short, narrow, and thin-walled esophagus is simple with a folded stratified squamous epithelium without glands but mucous surface cells secreting neutral mucus. small intestine – the major area of digestion and absorption as food is mixed with bile and pancreatic enzymes and broken down into component parts. 11n, the long guard interval of 800 nsec is mandatory while the short guard interval of 400 nsec is an available option. 2. Celiac trunk, which after a short course further splits three into major branches; left gastric, common hepatic and splenic arteries. Its anatomy is quite complex; it consists of four parts, two curvatures and receives its blood supply mainly from the celiac trunk. g. In IEEE 802. 4 cm) diameter over 2 cm strongly argues in favor of ileocolic. 11ac is theoretically capable of data rates up to 6993 Mbps! with 8 spatial streams, 256-QAM, 5/6 coding rate, 160 MHz channel bandwidth, and a 400 ns Short Guard Interval. [1][2] It can occur in the context of active pulmonary disease or as a primary infection without pulmonary involvement. #2. Frame aggregation is a feature that only 802. If you use 7, 8, 9 or 10 while they're on 11 then their signal is unmanageable noise. com Filmed and edited by:. 4 GHz band cannot be configured if the standard is 802. 11 specification, you would see relatively small set of informations included in the beacon. Table 40 Feature compatibility. The glycemic index (GI) is a value used to measure how much specific foods increase blood sugar levels. 300Mbps Wireless N Access Point. The purpose of a guard interval is to. 0 BJJ Gi is one of the most recognizable and popular line of BJJ Gi’s in the opinion of myself and many others. 8/10 (Expert Score) Product is rated as #13 in category BJJ Gis. What Is the Working Process of 802. Single radio/antenna devices do not support mimo and still having trouble with inter symbol interference by multipath, especially in warehouses where barcodescanners are used. The most important features include 80Mbps channel bonding, 3X3 MIMO spatial streams, frame aggregation, and short guard interval. Answer:-. 11 OFDM-based communications, Guard Interval is used to ensure that distinct transmissions occur between the successive data symbols transmitted by a device. a platoon leader who tried to be more GI than anyone else. Only the application supporting UPnP protocol can use this feature. In medicinal chemistry and molecular biology, a pharmacophore is an abstract description of molecular features that are necessary for molecular recognition of a ligand by a biological macromolecule. Use this feature to turn off antenna diversity when the AP must support legacy clients such as Cisco 7921g VoIP. It should be set to "auto",. Space-time block coding (STBC) for increased range and improved reception. They both function best in optimum network conditions where. 11ac allows two networks to share a high-capacity 80 MHz channel without contention most of the time, which is valuable because many devices will either not be capable of 80 or 160 MHz operation, or will disable it to save battery power. Here’s what you need to know. 11 based wireless communication defines the length of the CRC (Cyclic Redundancy Check) block for communication between the Access Point and roaming wireless adapters. 11ax 2. 11a/g radios use a 800 nanosecond guard interval. 11b and. larger anteroposterior diameter (mean 2. 4G radio. Objective: We studied the extent to which acute glycemia and glycemia after subsequent meals can be modulated by the characteristics of cereal foods, such as glycemic index (GI) and content of. A lower GI series is a procedure in which a doctor uses x-rays and a chalky liquid called barium to view your large intestine. Changing the radio mode to 802. 2、已有代謝疾病者 (糖尿病、心血管疾病、代謝症候群、過重)，平常的主食（五穀雜糧類）盡量選擇低GI的食物，對於疾病及體重的控制較好。. ใน Wi-Fi ที่ใช้ OFDM จะใช้ GI อยู่สองตัวคือ GI มาตรฐาน 0. Learn more. Hayabusa Lightweight Jiu Jitsu GI. A wireless network broadcast by a particular AP is known as a basic service set (BSS). 11ax compared to Wi-Fi 5 and older generations: the addition of a new frequency band, higher modulation rate, smaller subcarrier spacing, longer guard interval and the introduction of the OFDMA modulation technique providing capacity. See also. Central Processing Unit (CPU) Every computer has a Central Processing Unit, and so does the Raspberry Pi. Short may increase throughput slightly for strong signals without packet loss and VoIP, however, it is not recommended in longer-distance low-signal connections, in noisy wireless environments, and for compatibility with older 802. When to use short GI? When intending to improve the throughput, enable short GI can improve the throughput about 10% . For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK)and OFDM baseband processing are included to support all IEEE Short may increase throughput slightly for strong signals without packet loss and VoIP, however, it is not recommended in longer-distance low-signal connections, in noisy wireless environments, and for compatibility with older 802. From Wi-Fi 1 to Wi-Fi 6, each new modulation technology increases the rate of each spatial stream by at least 20%. Windows Vista/ Windows 7/ Windows 8, etc. Short GI: 0. diameter of the fatty core exceeding that of the outer wall. This feature in 802. The Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement is crucial for promoting trade in knowledge and innovation, resolving intellectual property trade disputes, and ensuring World Trade Organization (WTO) members’ freedom to pursue their domestic goals. Module Outline Drawings Updated and added SPI Master Timing, SPI Master Interface, PCM InterfaceRDS is abundant in highly processed foods and is the most significant contributor to a rapid influx of glucose into the bloodstream, resulting in a high GI, whereas RS behaves like dietary fiber for fermentation in the colon, to release short-chain fatty acids for colonic health, with an accompanying low GI feature . If you typically eat a lot of. Hypnotik Base Gi. If the short guard interval does not allow enough time for reflections to settle in your mesh deployment, inter-symbol interference values may increase and. At least 8 different. 11ax 2. 3) Click Save and click Apply. 71%) in the small intestine group and 97 (69. 4/0. If a "short guard interval" isn't working (channel congestion is a common reason for this), the radios may fall back to a standard guard interval, which will reduce. 4G radio. 11b standard, which uses the 2. r/wifi. Hirschsprung disease is characterized by aganglionosis (absence of ganglion cells) in the distal colon and rectum. Next thing is disable fat channels and short guard interval. Short GI: disabled- Short Guard Interval decreases the time between data characters being sent wirelessly. since 802. 5 billion dollars - veterans who took advantage of the educational subsidy earned, on average, $10,000-15,000 more per. You should be able to see it in a packet capture of the beacon. VHT feature enables support for 256QAM VHT rates not specified by the 802. enable short gi nedir; modem arayuzunde 11n koruma araligi ne olmali; Benzer konular: Wi-Fi. Study GI tract species comparison flashcards from Laura Oldfield's class online, or in Brainscape's iPhone or Android app. They sound like great features but what happens in reality is that the AP kicks the client off the wi-fi, forcing it to reauthenticate. Another additional feature of 802. transmits data using a 400 ns guard Interval when communicating with clients that also support the short guard interval. Radio interface view. The. 11 standard includes the RTS (Request to Send) threshold function to control station access to the medium. 6% for all GI symptoms. To reduce complexity, manufacturers typically only implement a short guard interval as a final rate adaptation step when the device is running at its highest data rate. Client Load Balance. Best Overall: FUJI – Baseline Grappling Shorts. Loss of appetite, dyspepsia, irritable bowel syndrome, loss of taste, and abdominal pain were the five most common GI symptoms of long COVID. (Changelog)TextBlob is a Python (2 and 3) library for processing textual data. GI endoscopes are devices used for the examination and treatment of the GI tract. INCREASE WI-FI THROUGHPUTIn this increase wifi throughput 2020 video you will learn why and when to use wifi short guard interval in your WI-FI ACCESS POINT. 11acは、Wave1とWave2の2つの規格に細分できます。. 2*GI-1. The "guard. with a short guard interval) will be able to achieve almost 3. The short length and wide flanges make LAMS potentially suitable for this indication and may reduce complications and improve patient tolerance. 2 To add a new SonicPoint AC profile, click the Add SonicPoint AC Profile button. 11ax allows for a 6-bit BSS color field in the SIG-A field at the physical layer, as well as within management frames. 11a, 802. News Feature 19 Sept 2023. Key Point. The gi features inside taping with the embroidered word Fuji and the small logo running along it as a subtle design element. In normal 802. 11n 针对 802. In the Wireless MAC Filtering section, enable this feature and specify the filtering rule. The key distinguishing features are as follows: The external diameter of the jejunum (4 cm) is greater than that of the ileum (3. It can result from multiple factors, such as multipath effect. An example of a pharmacophore model. 802. 4. 0. This extra genetic material causes the developmental changes and physical features of Down syndrome. Rice is considered a high. Alan the antelope ate asparagus). Symbol and guard interval (GI) Symbol is the transmission signal in the time domain. 2%), and abdominal pain/discomfort (9. GI-FI features. 11n radios. Gigabit Wireless, or Gi-Fi, which is ten times faster than other technologies, and the chip allows for short-range multigigabit data transfer in a local environment. The GI tract is composed of the alimentary canal, that runs from the mouth. g. This gives a safe time between transmissions. Use Short Guard Interval (SGI) if you can - it may squeeze a bit more throughput through with your 11n/11ac clients. The 802. The IEEE802. Encoding scheme. It can be enabled or disabled on your network to enhance the stability of your wireless network. WA6636. 802. In an optimal radio environment that could increase throughput but. The features of Raspberry Pi computers that make all these possible include: Features of Raspberry Pi. The purpose of a guard interval is to introduce immunity to propagation delays, echoes, and reflections to which digital data is normally very sensitive. RE: Short Guard Interval - 20MHz. Improved outdoor operation - Several of these features will result in better outdoor performance,. 11n deployments have proven capable of implementing the short guard interval without difficulty or adverse effects. The size of genome segments a®ects the measurement of GI-related featuresMIS-C has a wide spectrum of clinical signs and symptoms, though it most commonly presents with persistent fever, along with dermatologic, mucocutaneous, and GI features (Table 1). Predefined user roles. 2. In the. The standard symbol Guard Interval used in 802. «BR»Set to 0 if NSYM mod 10 != 9 or short GI not used. thecompnerd. 11n OFDM One Transmit and one Receive path (1T1R) 20MHz and 40MHz bandwidth transmission Short Guard Interval (400ns) DSSS with DBPSK and DQPSK, CCK modulation with long and short preamble OFDM with BPSK, QPSK, 16QAM, and 64QAM modulation. network-admin. 4. a part of a building or of an area of…. It did, my connection speed went from 300Mbps to over a 1Gbps, will give short guard interval a shot, thanks again! Reply. For instance, a channel in the 2. 3. 300 Mbps wireless speed ideal for smooth HD video, voice streaming, and online gaming. 11b-compatible devices, the access point may disable the Short GI feature when the wireless mode is set to Mixed 802. Pictures and captions help are important features to understand the text better. 11a, 802. For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK) and OFDM baseband processing are included to support all IEEE 802. Now, if you use short guard interval the max data rate will increase to 144.