频率选择性信道中的GFDM信号检测算法研究  

Research on GFDM Signal Detection Algorithm in Frequency Selective Channel

作　　者：白林[1] 张一琼[2] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]中国人民解放军61906部队,河北廊坊065001

出　　处：《无线电工程》2015年第7期35-37,82,共4页Radio Engineering

摘　　要：广义频分复用(GFDM)传输技术凭借带外频谱能量泄露小等特点,在认知无线电应用领域逐渐成为研究热点,但频率选择性衰落信道下的GFDM系统不仅存在自干扰问题,而且由于多径分量的存在,干扰更为复杂。提出了一种双边干扰抵消的系统检测算法,利用双边干扰对消的反馈信号降低干扰,实现信号检测。仿真比较表明,基于本算法的GFDM系统BER性能与OFDM系统性能十分接近。Currently,GFDM gradually becomes research hot point in cognitive radio area due to its features such as less leakage of out-band spectrum energy. However,the self-interference problem exists in frequency-selective fading channel. Moreover,the interference may be more deteriorated due to multi-channel component. A GFDM detection algorithm in frequency selective-fading channeldouble sided interference cancellation is proposed. The algorithm adopts feeding signals of double sided interference cancellation to reduce interference and realize signal test. The simulation result shows that the BER performance of GFDM is comparable to that of OFDM systems.

关 键 词：广义频分复用 信号检测 多径信道 

分 类 号：TN915[电子电信—通信与信息系统]