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Application of Relay Coding in Wi-Fi for 802.11s Standardization

Abstract : In this thesis, we show the realization and application of relay coding in the current WiFi system. For this purpose, the cooperative transmission model is introduced in Chapter 1 and we study the MIMO decoder technique for cooperative system in Chapter 2. Chapter 3 is dedicated to the study of the cooperative protocol, named Relay-SISO and its implementation in 5GHz IEEE802.11a standard. New frame structures are proposed by introducing new preamble fields that are essential to realize the cooperative mode. The simulation results show the advantage of this cooperaitve method to improve 802.11a system's performance. As far as we know, this is the first works concernning the applications of cooperation in WiFi system. In Chapter 4, a Relay-SISO based hybrid strategy is presented and it can improve the Relay-SISO performance. This hybrid mode operates by evaluating the cooperative link quality. In Chapter 5, we propose another physical layer optimization method that takes advantage of the partition chaine of Golden code. By simulations, a simple combinaison of this method and convolutional code can provide a coding gain thanks to the determinant gain of Golden code. In Chapter 6, we propose a new cooperative protocol Relay-MIMO. This cooperation mode is derived from the IEEE 802.11n based Wifi standard which is ratified in October 2009. In this protocol, we exploit jointly the MIMO diversity with the cooperative diversity.
Keywords : Wi-Fi MIMO Cooperation STBC
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Contributor : Zhipeng Zhao <>
Submitted on : Wednesday, January 26, 2011 - 12:33:38 PM
Last modification on : Friday, July 31, 2020 - 10:44:07 AM
Long-term archiving on: : Friday, December 2, 2016 - 4:11:12 PM


  • HAL Id : pastel-00559723, version 1


Zhipeng Zhao. Application of Relay Coding in Wi-Fi for 802.11s Standardization. Networking and Internet Architecture [cs.NI]. Télécom ParisTech, 2010. English. ⟨pastel-00559723⟩



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