基于多天线相关信道的自适应格形编码QAM调制研究

基于多天线相关信道的自适应格形编码QAM调制研究 Adaptive Trellis Code Quadrature Amplitude Modulation for Multi-Antenna Correlation Channels 金江 JIN Jiang 1 2 first-author 朱光喜 ZHU Guang-xi 1 2 汪俊芳 WANG Jun-fang 1 2 华中科技大学电子与信息工程系 华中科技大学电子与信息工程系 Department of Electronic and Information,Huazhong University of Science and Technology Department of Electronic and Information,Huazhong University of Science and Technology 华中科技大学电子与信息工程系,湖北,武汉,430074 华中科技大学电子与信息工程系,湖北,武汉,430074 为了提高系统数据流通率,结合空时预编码技术,提出一种基于多天线相关信道反馈的低复杂度自适应格形编码调制（TCM）系统.利用二维波束成型的变换作用,使得在大天线数情况下,也具有满空时编码速率.给出系统误比特率性能分析表达式,并在此基础上得到最优空时码预编码方式.在满足系统预设可靠性要求下,获得自适应格形编码正交幅度调制（QAM）设计准则.实验结果显示能获得高数据流通率. Based on channel covariance feedback,a low-complexity adaptive trellis code modulation（TCM） scheme is proposed to increase multi-antenna system throughput.Full-rate is achieved for any number of transmit antennas by applying the precoding of space-time block code（Precoding STBC） and two-dimension beamforming.The optimal beamforming vectors and power allocation algorithm are derived according to minimizing average bit error rate（BER） criterion.Under the preset BER requirement,the adaptive design criteria of trellis code quadrature amplitude modulation（QAM） are achieved.The numerical results show that the proposed scheme can increase system data throughput significantly. 无线通信 自适应发送 格形编码调制 多天线相关信道 wireless communication adaptive transmission trellis code modulation multi-antenna correlation channels TN820 国家自然科学基金资助项目（60496315）;国家“863”计划资助项目（2003AA12331005） 2005-01-01 2021-04-01 S2