| 水声MIMO-OFDM通信系统中基于导频的信道估计算法研究 |
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| 引用本文： | 王彪,夏捷,张尤赛. 水声MIMO-OFDM通信系统中基于导频的信道估计算法研究[J]. 中国造船, 2012, 0(2): 149-155 |
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| 作者姓名： | 王彪 夏捷 张尤赛 |
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| 作者单位： | 江苏科技大学电子信息学院,镇江 212003 |
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| 基金项目： | 江苏省高校优势学科建设工程资助项目 |
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| 摘 要： | 正交频分复用(OFDM)和多输入多输出(MIMO)的结合可以有效地对抗多径衰落和码间干扰,大幅度提高水声通信系统的信道容量和传输效率,在高速水声通信中有着重要的发展前景。在分析梳状导频水声MIMO-OFDM通信原理的基础上,结合水声通信及信道传播特点,建立了信道模型,研究水声MIMO-OFDM系统中的信道估计原理和LS(最小平方误差)、MMSE(最小均方误差)算法。通过仿真试验比较两种算法在信道估计中的性能差异,为实际系统设计提供了理论参考。
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| 关 键 词： | 正交频分复用 多输入多输出 信道估计 最小平方误差 最小均方误差 |
Channel Estimation Algorithm Based on Pilot in MIMO-OFDM Underwater Acoustic Communication System |
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| WANG Biao,XIA Jie,ZHANG Yousai. Channel Estimation Algorithm Based on Pilot in MIMO-OFDM Underwater Acoustic Communication System[J]. Shipbuilding of China, 2012, 0(2): 149-155 |
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| Authors: | WANG Biao XIA Jie ZHANG Yousai |
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| Affiliation: | (School of Electronic and Information,Jiangsu University of Science and Technology,Zhenjiang 210003,China) |
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| Abstract: | Multiple inputs and multiple outputs-orthogonal frequency division multiplexing(MIMO-OFDM) could effectively resist multi-paths fading and inter symbol interference.It also could raise transmission efficiency and capacity of underwater communication system.This system has a promising future in underwater acoustic(UWA)communication.In this paper,based on comb pilot,we study basic principle for UWA MIMO-OFDM communication system and characteristics of channel transportation,including algorithms of LS(least square) and MMSE(minimum mean square error).Difference in performance between the two algorithms is analyzed through simulation.The research will provide a theoretical reference for the design of a practical UWA communication system. |
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| Keywords: | orthogonal frequency division multiplexing multiple inputs and multiple outputs channel estimation least square minimum mean square error |
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