一种用于坐标交错调制方案的低复杂度解调器

G.A. Srinivas, D.N. Rohith, M. Z. Ali Khan
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引用次数: 0

摘要

本文讨论了在使用N2-QAM星座的坐标交错(CI)系统中降低接收机解调复杂性的技术。CI是一种在衰落信道上提高任何调制方案分集阶数的方法,但具有较高的解调复杂度。所描述的技术将计算此类系统的最大似然比和对数似然比指标所需的复杂性分别从O(N2)和O(N2logN)降低到O(NlogN),而性能没有任何损失。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A low complexity demodulator for coordinate interleaved modulation schemes
This paper discusses techniques to reduce the demodulation complexity at the receiver of systems that use coordinate interleaving (CI) with N2-QAM constellations. CI is a method used to increase the diversity order of any modulation scheme on fading channels, but has a high demodulation complexity. The techniques described reduce the complexity required to calculate the maximum likelihood and log likelihood ratio metrics for such systems from O(N2) and O(N2logN) respectively to O(NlogN), without any loss in performance.
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