频率选择性衰落信道下一种空时分组码的直接解码

该文针对 3个发射天线，1个接收天线的空时分组码系统，提出了频率选择性衰落信道下，无需信道估计，直接对空时分组码进行解码的方法，把子空间方法应用于空时编码当中，从信号处理和空时编码两个方面考虑空时分组码的直接解码问题，利用空时分组码所特有的正交设计，较为方便地从子空间中解出信号信息，从单载波的角度，解决了频率选择性衰落下空时分组码的解码问题。Monte-Carlo仿真给出了直接解码算法的性能，并与使用准确信道信息的解码算法做了性能比较。

Direct decoding in a space-time block code for frequency-selective fading channels

This paper proposes a decoding scheme in space-time block code system with three transmitting antennas and one receiving antenna for frequency-selective fading channels, which does not require channel estimation at the transmitter or receiver. By applying the subspace method to space-time codes, the direct decoding is accomplished from both a signal processing and space-time coding perspective. With the special orthogonal design of space-time block codes, the input of the space-time block code system is obtained from the subspace. The direct decoding is addressed for frequency-selective fading channels from a single carrier perspective. Monte Carlo simulations show the performance of direct decoding and the performance comparison with the decoder using the perfect channel information.