| 低复杂度均衡在水声OFDM通信中的应用 |
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| 引用本文： | 吴长奇,温娜. 低复杂度均衡在水声OFDM通信中的应用[J]. 声学技术, 2004, 23(4): 210-213 |
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| 作者姓名： | 吴长奇 温娜 |
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| 作者单位： | 秦皇岛燕山大学信息科学与工程学院,秦皇岛,066004 |
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| 摘 要： | 由于水声信道特性，传统的用于消除载波间干扰的均衡器计算复杂，难以实现。本文提出了录用一种降低复杂度的均衡方案，通过预处理将信道矩阵简化，然后采用MMSE准则进行均衡。仿真表明，该均衡器町以有效提高OFDM正交频分多路(Orthogonal frequency division multiplexing)符号的平均载干比(SIR)，且运算量有明显降低。
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| 关 键 词： | 低复杂度 OFDM 均衡器 载干比 正交频分多路 MMSE准则 载波间干扰 矩阵 平均 水声 |
| 文章编号： | 1000-3630(2004)04-0210-04 |
Low-complexity equalization to OFDM applied in underwater acoustic communications |
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| WU Chang-qi,WEN Na. Low-complexity equalization to OFDM applied in underwater acoustic communications[J]. Technical Acoustics, 2004, 23(4): 210-213 |
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| Authors: | WU Chang-qi WEN Na |
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| Abstract: | Traditional equalizer for eliminating ICI is complicated because of the characteristics of underwater acoustic channel. This paper proposes a scheme of equalization with low-complexity, which simplifies the channel matrix with linear pre-processing and iterative MMSE estimation to estimate symbols. Simulation results indicate that the equalizer can improve SINR and has significant complexity advantages in underwater acoustic communications over previous methods. |
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| Keywords: | low-complexity OFDM acoustic communications |
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