| 4状态8相移键控网格编码调制译码性能分析 |
| |
| 引用本文： | 彭莉莉,贾怀义.4状态8相移键控网格编码调制译码性能分析[J].北京交通大学学报(自然科学版),2006,30(5):76-79. |
| |
| 作者姓名： | 彭莉莉 贾怀义 |
| |
| 作者单位： | 北京交通大学,电子信息工程学院,北京,100044;北京交通大学,电子信息工程学院,北京,100044 |
| |
| 摘 要： | 用路径度量的概率密度函数的迭代计算方法推导了4状态8PSK网格编码调制维特比译码的比特误码性能,并将该方法应用到8状态8PSK中.结果表明,即使是在信噪比很低的情况下,也能准确得出4状态和8状态下8PSK的错误性能,与2状态的8PSK相比分别可以获得1.2 dB和1.9 dB的编码增益.
|
| 关 键 词： | 网格编码调制 8相移键控 维特比译码 软判决 |
| 文章编号： | 1673-0291(2006)05-0076-04 |
| 收稿时间： | 2005-12-09 |
| 修稿时间： | 2005年12月9日 |
Analysis of Performance for 4-State 8PSK TCM Viterbi Decoding |
| |
| PENG Li-li,JIA Huai-yi.Analysis of Performance for 4-State 8PSK TCM Viterbi Decoding[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2006,30(5):76-79. |
| |
| Authors: | PENG Li-li JIA Huai-yi |
| |
| Institution: | School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China |
| |
| Abstract: | An iterative calculation of probability density function of path metric is used in this paper to deduce the bit error performanc of Viterbi decoding for 4-state trellis coded 8PSK modulation. And then apply to 8-state 8PSK. It is shown that error performance results of 8PSK with 4-state and 8- state can be obain even in region of low singal-to-noise power ratio. Compared with 8PSK of 2-state, they can achieve 1.2 dB and 1.9 dB coding gain respectively. |
| |
| Keywords: | trellis coded modulation(TCM) 8-phase shift key(8-PSK) viterbi decoding soft-decision |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
