| 无线信道中网格编码调制技术研究 |
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| 引用本文： | 宋研,卢选民,何俊婷.无线信道中网格编码调制技术研究[J].现代电子技术,2010,33(23):67-70. |
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| 作者姓名： | 宋研 卢选民 何俊婷 |
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| 作者单位： | 西北工业大学电子信息学院,陕西西安710129 |
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| 摘 要： | 网格编码调制技术（TCM）是一种将编码与调制有机结合起来的技术，可使系统的频带利用率和功率资源同时得到有效利用。在对TCM原理和结构分析的基础上，研究了网格编码调制技术中的几个关键技术，主要包括集分割原理和无线信道下TCM误码率的分析，最后对无编码的QPSK与8PSK—TCM进行了仿真比较。仿真结果表明，在无线信道相同的误码率下，采用网格编码调制技术比未编码QPSK获得2dB的编码增益。
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| 关 键 词： | 网格编码调制 调制映射 最大自由欧氏距离 编码增益 |
Research on Trellis Coded Modulation in Wireless Channel |
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| SONG Yan,LU Xuan-min,HE Jun-ting.Research on Trellis Coded Modulation in Wireless Channel[J].Modern Electronic Technique,2010,33(23):67-70. |
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| Authors: | SONG Yan LU Xuan-min HE Jun-ting |
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| Institution: | (School of Electronics and Information, Northwestern Polytechnical University, Xi＇an 710129, China) |
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| Abstract: | Trellis coded modulation （TCM） is a technique which can comfortably combine coding and modulation, it can improve the system＇s bandwidth efficiency and power resources. Several key techniques are researched based on trellis coded modulation theory and structural analysis, the set partitioning principle and the bit error rate of Trellis coded modulation in wireless channel are analyzed, and the non-coded QPSK and 8PSK-TCM are simulated and compared. The simulation results indicate that the trellis coded modulation can get a better code gain than non-coded QPSK in the same bit error rate in wireless channel. |
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| Keywords: | Trellis coded modulation modulation mapping maximum free Euclidean distance code gain |
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