收发天线不对等的MIMO系统下几种编码方式的性能比较
The Unequal of Sending and Receiving Antenna Performance Comparison of Several Kinds of Coding Way under the MIMO System
摘要:
MIMO系统由于在收发端使用多根天线，获得了分集增益和复用增益，可以抵抗信道衰落和获得更大的信息速率。然而鱼和熊掌不可兼得，要更好地对抗信道衰落，提高信噪比，就得牺牲传输速率；反之亦然。在中阐述了2 × 2 MIMO系统中几种编码策略的优劣，本文主要探究接收天线和发射天线数目不相等的情况下，对比分析几种编码策略的性能。
Abstract:
MIMO system uses multiple antenna to get diversity gain and multiplexing gain, which can resist the channel fading rate and get more information. You can’t have your cake and eat it. However, to better against channel fading and improve the signal-to-noise ratio, it has to sacrifice the trans-mission rate, vice versa. In a 2 × 2 MIMO system is expounded advantages and disadvantages of several coding strategy. This article mainly explores the performance of the comparative analysis of several kinds of coding strategy, the receiving antenna and transmitting antenna number which are not equal.
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