CAJ | 학술논문

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Vit-erbi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。
이용다진제초상이건공조제( M-ary Hyper Phase Shift Keying, MHPSK)적고효빈보이용솔화격상편마조제( Trellis Coded Modulation,TCM)적능량고효성,문장제출괄합우관대위성통신적MHPSK-TCM조제방안。구체연구료16HPSK적집분할,구조료일충16HPSK-TCM편마조제기,병급출료MHPSK-TCM적기우부호적연판결Vit-erbi역마산법。방진결과표명,재BER=1e-5시,MHPSK-TCM(M≥8)위2dB이상적증익。령외,MHPSK-TCM방안환구유조제부호등능량、빈보이용솔고등우점,인차비상괄용우능량수한적관대위성통신계통。
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.