基于自适应滤波的信道估计改进算法与实现  

Channel estimation improved algorithm based on adaptive filtering and its implementation

作　　者：赵程[1] 张科峰[1] ZHAO Cheng;ZHANG Kefeng(School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074

出　　处：《现代电子技术》2017年第3期4-6,共3页Modern Electronics Technique

基　　金：国家重大科技专项课题:新一代宽带无线移动通信网(2010ZX03007-002-02)

摘　　要：为了适应无线信道条件下的OFDM通信系统应用,采用一种基于SNR估计的自适应滤波技术,对初始信道估计结果进行平滑滤波,降低噪声对估计结果的影响,提高信道估计算法的误码率性能。在FPGA上实现设计后,占用查找表和触发器资源分别为6 167和3 853,总体等效门面积降低了约8.34%。In order to adapt to the OFDM communication system application under the condition of wireless channel,an adaptive filtering technology based on SNR estimation is used to perform the smoothing filtering for the initial channel estimation result,reduce the effect of noise on the estimation result,and improve bit error rate performance of the channel estimation algo?rithm. The design realized on FPGA makes the occupation of the lookup table and trigger resource become 6 167 and 3 853 re?spectively,and total equivalent gate area to be decreased by 8.34%.

关 键 词：OFDM 自适应滤波 信道估计 FPGA 

分 类 号：TN929.531.34[电子电信—通信与信息系统]