MHPSK-TCM方案的研究  

Research on MHPSK-TCM Scheme

作　　者：陶孝锋[1] 任德锋[1,2] 李雄飞[1] 纪健超 

机构地区：[1]中国空间技术研究院西安分院,西安710000 [2]西安电子科技大学,西安710071

出　　处：《空间电子技术》2014年第1期72-76,共5页Space Electronic Technology

摘　　要：利用多进制超相移键控调制(M-ary Hyper Phase Shift Keying,MHPSK)的高效频谱利用率和格状编码调制(Trellis Coded Modulation,TCM)的能量高效性,文章提出适合于宽带卫星通信的MHPSK-TCM调制方案。具体研究了16HPSK的集分割,构造了一种16HPSK-TCM编码调制器,并给出了MHPSK-TCM的基于符号的软判决Viterbi译码算法。仿真结果表明,在BER=1e-5时,MHPSK-TCM(M≥8)为2dB以上的增益。另外,MHPSK-TCM方案还具有调制符号等能量、频谱利用率高等优点,因此非常适用于能量受限的宽带卫星通信系统。Based on the principle of MHPSK and TCM,the MHPSK-TCM scheme is proposed. In this paper, we inves-tigate the set partitioning of 16HPSK and construct a 16HPSK-TCM encoding modulator in detail. Moreover,a soft decision Viterbi decoding algorithm based on symbols of MHPSK-TCM is given. Simulation results show that communication systems which employ MHPSK-TCM（M≥8） can acquire 2dB gain,as BER is 1e-5. In addition,MHPSK-TCM scheme also has many virtues such as equal energy symbols and high spectral efficiency. Therefore,the proposed scheme can offer a good ap-plication in the energy-constrained wideband satellite systems.

关 键 词：UB码 VITERBI译码 集分割 

分 类 号：TN927.2[电子电信—通信与信息系统]