User cooperation diversity - Part II: Implementation aspects and performance analysis
User cooperation diversity - Part II: Implementation aspects and performance analysis
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DOI：
10.1109/tcomm.2003.819238
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发表时间：
2003-11-01
影响因子：
8.3
通讯作者：
Aazhang, B
中科院分区：
文献类型：
--
作者：
Sendonaris, A;Erkip, E;Aazhang, B
这是关于空间分集新形式的两部分系列论文中的第二部分，其中分集增益是通过移动的用户的合作实现的。第一部分描述了用户协作的概念，并提出了一种传统码分多址（CDMA）系统的协作策略。第二部分进一步探讨合作概念，并审议与执行合作概念有关的实际问题。特别是，我们调查的最佳和次最佳接收机设计，并提出了性能分析的传统CDMA实现中提出的第一部分。我们还考虑了一个高速率的CDMA实现和合作策略时，在发射机的信道状态信息的假设放宽。我们说明，在所有的情况下研究，合作是有益的，在增加系统吞吐量和小区覆盖，以及降低对信道变化的敏感性。
This is the second in a two-part series of papers on a new form of spatial diversity, where diversity gains are achieved through the cooperation of mobile users. Part I described the user cooperation concept and proposed a cooperation strategy for a conventional code-division multiple-access (CDMA) system. Part II investigates the cooperation concept further and considers practical issues related to its implementation. In particular, we investigate the optimal and suboptimal receiver design, and present performance analysis for the conventional CDMA implementation proposed in Part I. We also consider a high-rate CDMA implementation and a cooperation strategy when assumptions about the channel state information at the transmitters are relaxed. We illustrate that, under all scenarios studied, cooperation is beneficial in terms of increasing system throughput and cell coverage, as well as decreasing sensitivity to channel variations.