一种用于频率选择性信道的高速率单载波空时分组码系统

High-Rate Single-Carrier Space-Time Block Coding for Frequency-Selective Fading Channels

针对4根发射天线的宽带无线通信系统,提出一种两路复用的单载波空时分组编码方案.每一路信号均利用2根发射天线并采用满速率的正交空时分组码.本编码方案的码率为2,且只要求信道在两个连续的块内保持恒定.在接收端需要2根接收天线以分离两路空时编码信号,采用的干扰抵消和频域均衡算法具有较低的计算复杂度,且两路信号的检测均实现了满发射分集增益.

For broadband wireless communication systems with 4 transmitting antennas, a two-stream multiplexed space-time block-coding scheme is proposed. Each stream employs two transmitting antennas and adopts full-rate orthogonal space-time block coding. The proposed coding scheme achieves a code rate of 2 and requires the channels to be stationary over only two consecutive blocks. Two antennas are needed at the receiver to separate the two space-time block coded streams. Interference cancellation and frequency-domain equalization at the receiver have low complexity while offering full transmission diversity gain for both streams.