Recent work has established the diversity-multiplexing tradeoff at high SNR in Multiple Input Multiple Output (MIMO) communication systems having Ntand Nrtransmit and receive antennas respectively. We introduce a new adaptive encoding (AE) scheme which can switch efficiently between suboptimal encoding schemes, given a very limited non-systematic feedback information to the transmitter side to achieve the optimal tradeoff. When a 2 × 2 MIMO system is considered, the adaptive encoding scheme is presented and shown to achieve the optimal diversity-multiplexing tradeoff. The adaptive-encoding scheme is comprised of two suboptimal encoding achieving respectively the high rate and the low rate optimal segments.
展开▼
机译：最近的工作已经在多输入多输出（MIMO）通信系统中的高SNR中的分集多路复用折衷，分别具有N T 和N R 发送和接收天线。我们介绍了一种新的自适应编码（AE）方案，其可以在次优编码方案之间有效切换，给予发射器侧的非常有限的非系统反馈信息以实现最佳权衡。当考虑2×2 MIMO系统时，提出并示出了自适应编码方案，以实现最佳的多路复用折衷。自适应编码方案包括两个次优编码，分别实现高速率和低速率最佳段。
展开▼
