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首页> 外文期刊>International Journal of Innovative Computing Information and Control >MELIORATED MOE DETECTORS WITH CFO ESTIMATION FOR MC-CDMA SYSTEMS
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MELIORATED MOE DETECTORS WITH CFO ESTIMATION FOR MC-CDMA SYSTEMS

机译：MC-CDMA系统具有CFO估计的改进型MOE检测器

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摘要

This paper presents two effective approaches to improve the minimum output energy (MOE) detector for multicarrier code-division multiple-access (MC-CDMA) systems in frequency-selective fading channels. A closed-form expression of the output signal-to-interference-plus-noise ratio (SINR) has been derived to illustrate the impact of carrier frequency offset (CFO) on the MOE detector. It shows that the performance degradation of the MOE detector may result from an inaccurate constraint vector. The major idea in this paper is to perform adaptive data processing for amending the impaired constraint vector so as to enhance the tolerance of the MOE detector toward the CFO effect, and thus provide the system robustness. Besides this, the subspace technique is further employed to eliminate the inter-carrier interference (ICI). It is shown that the ameliorated MOE detectors diminish not only the system sensitivity to CFO but also the finite sample effect significantly. Theoretical and numerical results have been presented to verify that the proposed detector substantially outperforms the conventional MC-CDMA detectors.
机译：本文提出了两种有效的方法来改进频率选择衰落信道中多载波码分多址（MC-CDMA）系统的最小输出能量（MOE）检测器。导出了输出信噪比（SINR）的闭式表达式，以说明载波频率偏移（CFO）对MOE检测器的影响。它表明，MOE检测器的性能下降可能是由不正确的约束向量引起的。本文的主要思想是进行自适应数据处理，以修正受损的约束向量，从而增强MOE检测器对CFO效应的容忍度，从而提供系统鲁棒性。除此之外，还采用子空间技术来消除载波间干扰（ICI）。结果表明，改进的MOE检测器不仅降低了系统对CFO的灵敏度，而且显着降低了有限的采样效果。已经给出了理论和数值结果，以验证所提出的检测器实质上优于常规的MC-CDMA检测器。

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