无线通信中的协同分集技术

Cooperative Diversity in Wireless Mobile Communication

协同分集是无线网络中的一种新型分集技术,它能够提高吞吐量、减小发送功率并对抗衰落。由于它具有分布式特点,可以使网络变得相当简单,并可以使单天线系统具有多天线的优点,因此受到广泛关注。本文主要介绍了不同的协同分集的实现方法,并对其在无线通信中使用的可能性进行分析,指出目前存在的问题和面临的技术挑战。

In wireless networks, cooperative diversity is duce energy requirements and provide resistance to channel an attractive new way to increase throughput, refading effects. Due to its distributed nature, this new form of diversity allows a network of relatively simple and single-antenna devices to achieve many of the celebrated advantages of physical antenna arrays. Various approaches to cooperative diversity are reviewed and analyzed in this paper. The possiblilities of the schemes employed in wireless communication are analyzed and the problems and challenges are also discussed.