循环群酉空时码的优化设计

从精确成对错误概率（PEP）出发,推导得到了DUST调制群码符号误码率（SEP）的联合边界。摈弃行列式秩或欧氏距离的概念,综合考虑天线数及信噪比,在特定范围内最小化符号误码率联合边界,最后得到了优化循环群码。仿真结果表明,采用此方法获得的优化循环群码性能优于行列式秩或欧氏距离设计的空时编码。

Optimized Design of Cyclic Group Unitary Space-time Coding

Starting from the precise pair-wise error probability （PEP）, the joint border of group coding signal error probability （SEP） in differential unitary space - time （DUST） modulation is deduced. Discarding both concepts of Determinant rank and the Euclidean distance while considering the number of antennas and signal to noise ratio （SNR）, the optimized cyclic group coding is thus obtained by minimizing the joint border of SEP in a specific extent. Simulation result shows that the performance of optimized cyclic coding designed by the above method is better than that of space-time coding designed under the concept of Determinant rank or Euclidean distance.