Research of Noise Mitigation Method Based on DSPWVD-TFPF in Communication System

Journal of System Simulation ›› 2015, Vol. 27 ›› Issue (5): 1017-1023.

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Research of Noise Mitigation Method Based on DSPWVD-TFPF in Communication System

Su Lingdong, Zhai Mingyue

Department of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

Received:2014-11-13 Revised:2015-02-13 Online:2015-05-08 Published:2020-09-01

Abstract

Abstract: In the case of low SNR, the quality of the communication system will be decreased and the traditional TFPF on time-frequency clustering and noise suppression will descend. In order to overcome these, a new family of TF distribution, namely, the joint directionally smoothing Wigner-Ville distribution was presented to achieve instantaneous frequency estimation. This new TF distributions is based on the definition of the directionally smoothed pseudo Wigner-Ville distribution (DSPWVD) and point wise adaptive weight averaging of a bank of DSPWVD with different directions. The simulation shows that at low SNR, compared to traditional TFPF, DSPWVD-TFPF algorithm can better increase the time-frequency concentration and reduce the Bit Error Rate (BER).

Key words: low SNR, noise mitigation, time-frequency concentration, TFPF, DSPWVD

CLC Number:

TM77

Su Lingdong, Zhai Mingyue. Research of Noise Mitigation Method Based on DSPWVD-TFPF in Communication System[J]. Journal of System Simulation, 2015, 27(5): 1017-1023.

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Research of Noise Mitigation Method Based on DSPWVD-TFPF in Communication System

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