| SCTCM在水声OFDM系统中的应用研究 |
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| 引用本文： | 苏军,乔钢. SCTCM在水声OFDM系统中的应用研究[J]. 电子技术应用, 2008, 34(4): 102-104 |
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| 作者姓名： | 苏军 乔钢 |
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| 作者单位： | 哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对信道带宽窄、强多途、强噪声干扰等影响水下信息高速、可靠传输的主要障碍,设计了一种适合水声信道的级连网格编码调制技术SCTCM与正交频分复用技术OFDM相结合的传输体制,可有效解决水下高速数据传输的带宽效率和可靠性问题;采用时变衰落、多途和加性干扰的水声信道模型;理论分析和计算机仿真结果表明使用该传输体制的水声通信系统能在数据速率不损失或损失很小但不增加带宽的情况下获得可观的编码增益,系统性能得到明显改善。
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| 关 键 词： | 级连网格编码调制 水声捅信 正交频分复用 |
| 修稿时间： | 2007-10-15 |
The application study of serial concatenated TCM coding technique in UWA communication based on OFDM |
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| SU Jun,QIAO Gang. The application study of serial concatenated TCM coding technique in UWA communication based on OFDM[J]. Application of Electronic Technique, 2008, 34(4): 102-104 |
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| Authors: | SU Jun QIAO Gang |
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| Affiliation: | SU Jun,QIAO Gang(College of Underwater Acoustics Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Narrow bandwidth and strong interference introduced by multipath and severe noise are the main obstacle of the underwater signal’s credible and high-speed transmission.This paper considers the performance of Trellis-coded modulation(TCM) together with OFDM to solve the problems of the bandwidth efficiency and reliable in UWA communication;and presents the schemes of serial concatenated Trellis-coded modulation(TCM) and it's application in UWA system based on OFDM in detail.The simulation results show that this method gives a further coding gain over the uncoded QPSK.The performance of UWA communication has been improved greatly. |
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| Keywords: | Serial Concatenated Trellis Coded Modulation(SCTCM) underwater acoustic communication Orthogonal Frequency Division Multiplexing(OFDM) |
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