VLC-OFDM系统中基于Cordic算法的IQ不平衡补偿

2018 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC) Pub Date : 2018-10-01 DOI:10.1109/CYBERC.2018.00089

Peng Liu, Yarong Guo, Yue-ming Li, Song Liu

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引用次数: 0

摘要

研究了可见光通信(VLC)系统中的同相和正交(IQ)失衡问题。讨论了基于坐标旋转数字计算机(cordic)算法的盲补偿方法对IQ不平衡的有效性。我们进一步用QPSK和16QAM信号分别验证了所提出的补偿方法，并模拟了LED非线性引起的损伤。此外，对不同信噪比下的蒙特卡罗仿真进行了分析，在某些情况下，补偿强度随着信噪比的增大而增大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IQ Imbalance Compensation Based on Cordic Algorithm in VLC-OFDM System

This study investigates the problem of in-phase and quadrature (IQ) imbalance in the visible light communication (VLC) system. The effectiveness of the blind compensation method based on coordinate rotation digital computer (cordic) algorithm against the IQ imbalance is discussed. We further verify the proposed compensation method with QPSK and 16QAM signals respectively, with simulated impairments caused by the light emitting diode (LED) nonlinearity. Additionally, the analysis of Monte Carlo simulation under the assumption of different signal-to-noise ratio (SNR) is showed where in some cases, the compensation intensity increases as the SNR increases.

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2018 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC)

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