基于半定规划松弛的M-QAM MC-CDMA系统多用户检测

PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI:10.1109/PACRIM.2005.1517343

X. Wang, Zhiwei Mao

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引用次数: 5

摘要

提出了一种基于半定规划(SDP)的多载波码分多址(MC-CDMA)系统多用户检波器。结果表明，最大似然(ML)检测可以通过将相关的整数规划问题“放松”为SDP问题来执行，这导致检测器的复杂性大大降低。计算机仿真表明，该检测器的符号误差率(SER)性能优于现有的次优检测器，并且与ML检测器相比，该检测器的计算复杂度大大降低。

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Multiuser detection for MC-CDMA system with M-QAM using semidefinite programming relaxation

A multiuser detector based on semidefinite programming (SDP) is proposed for multicarrier code-division multiple-access (MC-CDMA) systems with M-ary quadrature amplitude modulation (M-QAM). It is shown that maximum likelihood (ML) detection can be carried out by 'relaxing' the associated integer programming problem to a SDP problem, which leads to a detector of much reduced complexity. Computer simulations demonstrate that the proposed detector offers a symbol-error rate (SER) performance which outperforms existing suboptimal detectors, and the computational complexity of the proposed detector is considerably reduced compared with that of ML detector.

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来源期刊

PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.

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