基于幅度-相位调制的DSTC研究  

Study on DSTC based on Amplitude and Phase Modulation

作　　者：李东伟[1] 程智慧 韩力[1] 练岚香[1] 

机构地区：[1]北京理工大学,北京100081 [2]北京1481信箱,北京102442

出　　处：《通信技术》2011年第1期81-83,共3页Communications Technology

摘　　要：为优化差分酉空时编码性能,一种适用于MIMO差分空时编码的幅度-相位调制架构被提出,该架构码元矩阵由标量幅度系数和PSK信号星座图组成,幅度系数控制发射信号功率,PSK信号为列向量正交的相位酉阵,幅度系数和相位酉阵均采用差分编译码。仿真结果表明此架构编码相对于相位调制编码而言,进一步提高了频谱的发射效率。A new differential space-time coding scheme based on amplitede-phase modulation in MIMO,is proposed.Its each code matrix consists of scalar amplitude coefficient and PSK constellation,the amplitude coefficient controls transmission power,while the phase matrix is a unitary matrix from PSK symblos whose row-vectors are constructed from orthogonal designs.Both the amplitude and phase are differentially encoded and admit efficient differential decoding.Simulation results show that the proposed scheme could provide higher spectral efficiency.

关 键 词：幅度-相位调制 相位调制 差分空时码 

分 类 号：TN929.11[电子电信—通信与信息系统]