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无线传感网OFDM系统中信道均衡器的电路实现

更新时间:2020-07-23 13:17:01 大小:960K 上传用户:IC老兵查看TA发布的资源 标签:无线传感网ofdm信道均衡器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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信道均衡器是无线传感网OFDM系统的关键部分,传统均衡器设计在信道估计精度或电路复杂度上效果不佳。为使均衡器更精确、复杂度更低,采用快速LMMSE算法进行信道估计与均衡,定制了精简的20位浮点数进行均衡器电路设计。电路经过综合、仿真与FPGA验证,结果表明,均衡器电路复杂度低,性能显著提高。相比于传统LS算法均衡器,在资源消耗仅增加27.27%的情况下,16dB载噪比下误码率降低了89.8%,实现了低复杂度高性能的均衡器电路。

Channel equalizer is a key part of OFDM system in Wireless Sensor Networks. Traditional equalizer often comes with low performance or very high complexity. In order to design a high performance equalizer with low com- plexity, a fast LMMSE algorithm is applied in the design. And dedicated 20-bit float operators is designed to gain very high performance and low complexity. After synthesis, simulation and FPGA verification, result shows that the complexity of the equalizer is only 27.27% higher compare to simple LS equalizer while the bit error rate is reduced by 89.8%.

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无线传感网OFDM系统中信道均衡器的电路实现.pdf 960K

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