为满足未来移动通信对高数据传输速率迅速增长的需求,本文提出了高频谱效率的联合编码调制分集(Joint Coding Modulation Diversity,JCMD)的多输入多输出(Multiple-Input Multiple-Output,MIMO)方案.从全局的角度,该方案通过空时分量交织器和旋转调制对Turbo编码,正交幅度调制(Quadrature Amplitude Modulation,QAM)和MIMO技术进行联合优化.本文首次证明了JCMD-MIM的可达速率大于等功率分配的BICM-MIMO系统.基于以上理论分析,提出了一种最佳空间分量交织器以及自适应层数选择方案以最大化系统的可达速率.仿真结果表明新方案与传统的BICM-MIMO方案相比可以获得明显的信噪比增益.%A high-spectral-efficient joint coding modulation diversity (JCMD) scheme over multiple-input multiple-output (MIMO) fading channels is proposed to meet the rapidly-increasing need of high-data-rate transmission in the future mobile communications.From a global viewpoint, the scheme introduces the space-time component interleaver and rotated modulation to jointly optimize the Turbo coding,QAM and MIMO processing.We firstly prove that the achievable rate of JCMD-MIMO is greater than that of the uniform-power-allocation BICM-MIMO.Based on the above theoretical analysis,an adaptive layer-selection JCMD-MIMO scheme with the optimum spatial component interleaver is proposed to obtain the maximum achievable rate.Simulation results turn out that this new scheme can obtain significant SNR gain as compared with the conventional BICM-MIMO schemes.
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