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无线局域网中一种支持QoS的协作分集算法

QoS-aware cooperative diversity protocol for wireless LANs
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摘要 研究了无线局域网中发送节点选择协作的时机、方案和效益,提出一种按需协作机制——支持QoS的协作分集算法.该算法规定:仅当源节点直接发送不能达到相应业务所需的最低数据速率时,选择能够满足用户QoS需求的伙伴协作.分析和仿真表明,支持QoS的协作分集算法能避免无条件协作机制中传输出错带来的负面影响,进而显著提高系统的吞吐量. By introducing quality of service（QoS） attributes into cooperative communications, a QoS- aware cooperative diversity protocol is proposed. According to different services, cooperative diversity is invoked only if the minimum data rate required to have a successful transmission cannot be achieved. Based on user-specific QoS requirements, partners are determined catitiously. Analytical and simulation results indicate that the QoS-aware cooperative diversity protocol can avoid the negative effect of error propagation in cooperation and greatly improve the system throughput.
作者 李屹 纪红
机构地区 北京邮电大学泛网无线通信教育部重点实验室
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2008年第1期162-166,共5页 Journal of Xidian University
基金 国家自然科学基金资助(60672124) 国家863计划项目资助(2007AA01Z221)
关键词 协作分集 服务质量 吞吐量 无线局域网 cooperative diversity quality of service throughput wireless local area network
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献11

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西安电子科技大学学报
2008年 第1期

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