基于检测排序的单载波传输2步QRM-MLBD

K. Temma, Tetsuya Yamamoto, F. Adachi
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引用次数: 1

摘要

采用QR分解和m算法的两步最大似然块信号检测(QRM-MLBD)与最大似然检测(MLD)相比,可以显著提高单载波(SC)传输的误码率(BER)性能,同时降低计算复杂度。在两步QRM-MLBD中,通过在QRM-MLBD之前执行基于最小均方误差的频域均衡(MMSE-FDE)来去除不可靠的候选符号。然而,在M-算法中,为了达到接近匹配滤波器(MF)界的误码率性能,仍然需要大量的M个幸存路径。为了解决这一问题,我们在两步QRM-MLBD中引入了检测排序。我们将通过计算机仿真证明,使用检测排序可以实现与2步QRM-MLBD相同的误码率性能,同时降低了计算复杂度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
2-Step QRM-MLBD Using Detection Ordering for Single-Carrier Transmission
2-step maximum likelihood block signal detection employing QR decomposition and M-algorithm (QRM-MLBD) can significantly improve the bit error rate (BER) performance of single-carrier (SC) transmission while reducing the computational complexity compared to maximum likelihood detection (MLD). In 2-step QRM-MLBD, unreliable symbol candidates are removed by performing minimum mean square error based frequency-domain equalization (MMSE-FDE) prior to QRM-MLBD. However, a large number M of surviving paths is still required in the M-algorithm to achieve a BER performance close to the matched filter (MF) bound. In this paper, to remedy this problem, we introduce a detection ordering to 2-step QRM-MLBD. We will show by computer simulation that the use of detection ordering can achieve the same BER performance as 2-step QRM-MLBD while reducing the computational complexity.
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