Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2013, Vol. 36 ›› Issue (4): 55-58.doi: 10.13190/jbupt.201304.51.wangy

• Papers • Previous Articles     Next Articles

Blind Maximum Doppler Frequency Estimation Based on Channel Frequency Response Envelope PSD in OFDM Communication

WANG Yi1,2, HOU Xing-zhe1, YANG Yun-chun1, SUN Hong-liang1, ZHENG Ke1   

  1. 1. Chong Qing Electric Power Research Institute, Chongqing 401123, China;
    2. Postdoctoral Workstation of Chongqing Electric Power Corporation, Chongqing 401123, China
  • Received:2012-10-16 Online:2013-08-31 Published:2013-05-22

Abstract:

A new blind maximum Doppler frequency estimation algorithm is proposed based on channel frequency response envelope power spectral density (PSD) in orthogonal frequency division multiplexing systems. The subcarriers modulated by constant-envelope modulation are utilized. The PSD of received subcarriers magnitude is estimated by classic periodogram method. The maximum Doppler frequency is derived by searching the edge of envelope PSD and noise PSD. It does not need channel estimation used in conventional PSD method. Simulation shows that the estimation precision is increased and the performance is robust in a wide range of Doppler spread values.

Key words: orthogonal frequency division multiplexing, maximum Doppler frequency estimation, channel frequency response envelope power spectral density, blind estimation component

CLC Number: