OFDM transmission is a new combined pulse noise mi
2016-08-23
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Abstract - orthogonal frequency division multiplexing (OFDM) can use two threshold clipping and zeroing schemes to alleviate the impact of noise. We introduce a new combined impulse noise cancellation method, called clipping replacement return to zero scheme, in which three thresholds are considered: clipping threshold tclip, replacing threshold TREP and return to zero threshold tnull. When the amplitude of the received OFDM sample is higher than TREP and tnull, we set it to the average amplitude JX? Noise free OFDM sample J. Simulation results show that additional actions, replacement actions, and TREP are a good choice to bring about a reduction in bit error rate.
ofdm
脉冲
组合
传输
研究
方案
噪声
缓解
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