用于OFDM的减噪迭代接收机

2012 IEEE 3rd International Conference on Networked Embedded Systems for Every Application (NESEA) Pub Date : 2012-12-13 DOI:10.1109/NESEA.2012.6474024

N. Bibi, B. Cheetham

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引用次数: 8

摘要

正交频分复用(OFDM)系统容易受到高功率放大器(HPA)非线性的影响，因为所传输的信号的峰值与平均功率比(PAPR)很高。削波或以其他方式限制这些峰值会导致信号的带内和带外失真。本文研究了基于Bussgang噪声消除(BNC)和决策辅助重建(DAR)的迭代接收机的削波降噪。对改进后的雷达接收机进行了过采样滤波仿真。两种接收机在误码率(BER)和迭代次数方面进行比较。

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Clipping noise mitigating iterative receivers for OFDM

Orthogonal Frequency Division Multiplexing (OFDM) systems are susceptible to High Power Amplifier (HPA) nonlinearities because of the high Peak to Average Power Ratios (PAPR) in the symbols that are transmitted. Clipping or otherwise limiting these high peaks causes in-band and out-of-band distortion in the signals. This study focuses on clipping noise mitigation using iterative receivers based on Bussgang Noise Cancellation (BNC) and Decision-Aided Reconstruction (DAR). A modified DAR receiver is simulated with oversampled clipping and filtering. Both receivers are compared in terms of bit-error rate (BER) and number of iterations.

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来源期刊

2012 IEEE 3rd International Conference on Networked Embedded Systems for Every Application (NESEA)

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