Space-time code ARQ protocol for wireless networks
Space-time code ARQ protocol for wireless networks
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DOI：
10.1109/wcnm.2005.1544079
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发表时间：
2005-12
期刊：
影响因子：
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通讯作者：
Yu Guan-ding;Zhang Zhao-yang;Qiu Pei-liang
中科院分区：
文献类型：
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作者：
Yu Guan-ding;Zhang Zhao-yang;Qiu Pei-liang
多用户协作通信是一种新型的传输技术，它将相邻移动的终端上的天线组成虚拟天线阵列（VAA），以分布式方式实现空间分集增益。提出了一种利用无线网络节点间协作能力的空时码ARQ协议。与传统的ARQ协议不同，源端和中继端同时采用空时编码重传错误接收的数据包，从而实现了发射分集。推导了空时码ARQ在相关和不相关块衰落无线信道中的误包率（PER）性能，并与传统ARQ进行了比较。我们的分析表明，空时码ARQ是能够提取二阶分集和三阶分集在相关和不相关的块衰落信道，而传统的ARQ只能实现一阶分集和二阶分集，相应的。
Multiuser cooperative communication is a novel transmission technique, where the antennas on adjacent mobile terminals are formed as a virtual antenna array (VAA) to realize spatial diversity gain in a distributed way. A space-time code ARQ protocol exploiting the cooperation capability between nodes in wireless networks is proposed in this paper. Different to the traditional ARQ protocol, the erroneously received packet is retransmitted by the source terminal and a relay terminal simultaneously using space-time code, which results in the realization of transmit diversity. The packet error rate (PER) performance of space-time code ARQ is derived in both correlated and uncorrelated block fading wireless channels, in comparison with the traditional ARQ. Our analysis shows that the space-time code ARQ is capable of extracting second-order diversity and third-order diversity in correlated and uncorrelated block fading channels, respectively, while the traditional ARQ only achieves first-order diversity and second-order diversity, correspondingly.