A novel QoS supported cooperative diversity algorithm for IEEE 802.11 WLAN  

作　　者：李屹 Ji Hong 

机构地区：[1]Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, P.R. China

出　　处：《High Technology Letters》2008年第4期348-353,共6页高技术通讯（英文版）

基　　金：the National Natural Science Foundation of China(No.60672124);the National High Technology Research and Development Programme of China(No.2007AA01Z221)

摘　　要：A new cooperative diversity algorithm with quality of service （QoS） awareness for wireless local area network （WLAN） is proposed. According to this protocol, cooperation is invoked only if a direct transmission cannot meet user-specific QoS requirements. If cooperation is implemented, partner choice depends on who can achieve the minimum data rate required to have a successful transmission. The closed-form expressions for the system throughput and the power consumption are provided. Theoretical analysis and simulation results indicate that the QoS-aware cooperative scheme can significantly improve the system performance in terms of throughput and energy efficiency by avoiding negative effect of unconditional cooperation.A new cooperative diversity algorithm with quality of service (QoS) awareness for wireless local areanetwork (WEAN) is proposed.According to this protocol,cooperation is invoked only if a direct trans-mission cannot meet user-specific QoS requirements.If cooperation is implemented,partner choice de-pends on who can achieve the minimum data rate required to have a successful transmission.The closed-form expressions for the system throughput and the power consumption are provided.Theoretical analysisand simulation results indicate that the QoS-aware cooperative scheme can significantly improve the systemperformance in terms of throughput and energy efficiency by avoiding negative effect of unconditional co-operation.

关 键 词：cooperative communications quality of service （QoS） THROUGHPUT energy efficiency wireless local area network （WLAN） 

分 类 号：TN925.93[电子电信—通信与信息系统]