吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (1): 295-300.doi: 10.13229/j.cnki.jdxbgxb20161200

• Orginal Article • Previous Articles     Next Articles

Non-iterative phase noise suppression algorithm utilizing cyclic prefix in OFDM systems

YUAN Jian-guo1, 2, ZHANG Xi-ruo1, QIU Piao-yu1, WANG Yong1, 2, PANG Yu1, LIN Jin-zhao1, 2   

  1. 1. Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2. Key Laboratory of Optical Communication and Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2016-11-07 Online:2018-02-26 Published:2018-02-26

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Abstract: A novel non-iterative phase noise suppression algorithm utilizing Cyclic Prefix (CP) for linear interpolation is proposed to compensate the interference arisen from the phase noise in Orthogonal Frequency Division Multiplexing (OFDM) systems. The algorithm can make full use of the correlation of the CP and the corresponding sample in the OFDM symbol, and apply the Inter-Symbol-Interference (ISI)-free part of the CP to estimate the phase noise. This scheme requires a small amount of the CP to optimize the interpolation point and increases the interpolation points of linear interpolation in each OFDM symbol. The interpolation estimation of the proposed method is more close to the actual phase noise. The analysis of the simulation results shows that the performance of the bit error rate is more approximate to the ideal curve for small phase noise, and the algorithm can improve 0.8 to 1.8 dB gain of the system performance and effectively reduces the error floor under large phase noise.

Key words: communication technology, orthogonal frequency-division multiplexing, phase noise, linear interpolation, cyclic prefix

CLC Number: 

  • TN919
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