基于离散Hartley变换的单载波频域均衡系统

Single carrier frequency domain equalization system based on discrete Hartley transform

设计了在单载波频域均衡系统中基于离散Hartley变换的空频块编码设计方案。通过将二维复数调制信号的实部和虚部分别进行离散Hartley变换,再合并,使信号从时域变换到频域,进行空频块编码设计。利用离散Hartley变换矩阵的互补特性,将信道矩阵对角化,从而实现单抽头的频域均衡。结果表明,与传统的基于傅里叶变换的空频块编码单载波频域均衡系统相比,该算法能够获得相似的性能,但接收机端的计算复杂度可降低一半。

A space-frequency block-coded（SFBC） single-carrier frequency-domain equalization（SC-FDE）system based on discrete Hartley transform（DHT）has been proposed.Two DHTs were used to transform the real and imaginary parts of the 2-dimensional complex signaling from time domain to frequency domain.With the complementary property of DHT matrix,the DHT-based SC-FDE architecture could perfectly diagonalize the channel matrix and be easily equalized by an one-tap frequency domain equalizer.The results showed that the scheme could achieve similar performance but halve the computational complexity of the receiver compared to the conventional DFT-based SFBC SC-FDE system.