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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。
Due to the small energy leakage of out-of-band spectral energy, Generalized Frequency Division Multiplexing (GFDM) transmission technology has gradually become a research hotspot in the field of cognitive radio applications. However, GFDM systems with frequency selective fading channels not only have self-interference problems, The existence of path components, interference is more complicated. A system detection algorithm based on bilateral interference cancellation is proposed, which can reduce the interference by using bilateral interference cancellation feedback signals and realize signal detection. The simulation shows that BER performance of GFDM system based on this algorithm is very close to that of OFDM system.