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