Diversity and multiplexing: A fundamental tradeoff in multiple-antenna channels

作者：Zheng LZ^*; Tse DNC

来源：IEEE Transactions on Information Theory, 2003, 49(5): 1073-1096.

DOI：10.1109/TIT.2003.810646

• diversity
• multiple input-multiple output (MIMO)
• multiple antennas
• space-time codes
• spatial multiplexing

Multiple antennas can be used for increasing the amount of diversity or the number of degrees of freedom in wireless communication systems. In this paper, we propose the point of view that both types of gains can be simultaneously obtained for a given multiple-antenna channel, but there is a fundamental tradeoff between how much of each any coding scheme can get. For the richly scattered Rayleigh-fading channel, we give a simple characterization of the optimal tradeoff curve and use it to evaluate the performance of existing multiple antenna schemes.

• 出版日期2003-5