Abstract: The problem of constellation mapping in BI-STCM-ID system is investigated.It is proved that，in bit-interleaved space-time coded modulation systems with iterative decoding，when linear dispersion code is used，the problem of optimization of multi-dimensional constellation based on the criterion of maximization of coding gain can be reduced to that of optimization of one dimensional constellation based on the criterion of maximization of harmonic mean of Euclidean distance of constellation point.

摘要： 研究了BI-STCM-ID系统中的星座映射问题。证明了在使用LDC（Linear Dispersion Code）空时编码方案的BI-STCM-ID系统中，基于最大化编码增益的高维星座映射设计优化问题等价于基于最大化欧式距调和均值的一维星座映射设计优化问题。