【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%。更多还原

【Abstract】 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 algorithm. The design realized on FPGA makes the occupation of the lookup table and trigger resource become 6 167 and 3 853 respectively,and total equivalent gate area to be decreased by 8.34%.更多还原