CAJ | 학술논문

为提高符号间干扰(ISI)信道条件下信号接收的可靠性，该文研究单载波通信系统的多天线空间分集接收问题，提出一种迭代频域合成均衡算法。该算法推导先验信息条件下合成均衡器的频域传输函数，并借助快速傅里叶变换(FFT)实现合成均衡器系数和均衡滤波的高效计算。仿真结果表明，相比时域算法，该算法能够在不损失性能的前提下，大幅降低运算复杂度。与单载波频域均衡(SC-FDE)算法相比，该算法不需要在数据传输的结构中插入循环前缀(CP)，提高频谱利用率，能够直接应用于现有单载波通信系统。
위제고부호간간우(ISI)신도조건하신호접수적가고성，해문연구단재파통신계통적다천선공간분집접수문제，제출일충질대빈역합성균형산법。해산법추도선험신식조건하합성균형기적빈역전수함수，병차조쾌속부리협변환(FFT)실현합성균형기계수화균형려파적고효계산。방진결과표명，상비시역산법，해산법능구재불손실성능적전제하，대폭강저운산복잡도。여단재파빈역균형(SC-FDE)산법상비，해산법불수요재수거전수적결구중삽입순배전철(CP)，제고빈보이용솔，능구직접응용우현유단재파통신계통。
To combat the effect of InterSymbol Interference (ISI) while transmitting data over wireless fading channels, the issue of single carrier communication signal receiving with multiple antennas is studied and an iterative frequency domain combining equalization algorithm is proposed. The proposed algorithm derives the theoretical frequency domain transfer function of the combining equalizer witha prioriinformation. An efficient implementation is proposed which employs the Fast Fourier Transform (FFT) to compute the combining equalizer coefficients and equalization filter. Numerical results show that the proposed algorithm reduces complexity enormously with nearly no performance loss compared with the time domain algorithm. Compared with Single Carrier Frequency Domain Equalization (SC-FDE), the Cyclic Prefix (CP) overhead can be avoided, and the computationally efficient frequency domain algorithm can be applied to the existing single carrier communication systems.