S2-GI: Intelligent Selection of Guard Interval in High Throughput WLANs
| Autor: | Punit Jain, Tinku Adhikari, Arindam Ghosh, Soumalya De, Raja Karmakar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
021103 operations research
Computer science Network packet business.industry 0211 other engineering and technologies Local area network 020206 networking & telecommunications Throughput 02 engineering and technology PHY IEEE 802.11ac Guard interval 0202 electrical engineering electronic engineering information engineering Network performance business Communication channel Computer network |
| Zdroj: | ICCCNT |
| DOI: | 10.1109/icccnt49239.2020.9225322 |
| Popis: | Short guard interval (SGI) is a new feature of the physical (PHY) layer in High Throughput Wireless Local Area Networks (HT-WLANs), like IEEE 802.11n/ac, where the value of the guard interval is set to 400ns instead of general 800ns. By reducing the overhead of extra idle time between transmissions of two successive symbols, SGI helps to enhance the average system throughput, compared to the guard interval of 800ns. However, the signal quality of the channel and high data traffic can affect the performance of SGI in a network. In a congested network scenario, channel interference and load of data transmission are increased; and consequently, inter-symbol interference becomes higher, which increases the rate of packet losses and thus, reduces average throughput in the case of SGI. In this paper, we design Thompson sampling based online learning mechanism, Smart Selector of Guard Interval (S2-GI), to select guard interval dynamically by considering the present channel condition. We analyze the performance of S2-GI through a thorough simulation in IEEE 802.11ac WLAN and we observe that S2-GI can enhance the network performance. |
| Databáze: | OpenAIRE |
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