Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (4): 36-40.doi: 10.13190/jbupt.200604.36.wangdy

• Papers • Previous Articles     Next Articles

A Modified RLM Algorithm for Evaluating the Impulse Response in Fast Fading Channel

WANG Dong-yu, ZHANG Xin, YANG Da-cheng   

  1. BUPT-Qualcomm Research Center, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2005-07-14 Revised:1900-01-01 Online:2006-08-30 Published:2006-08-30
  • Contact: WANG Dong-yu

Abstract:

In order to reduce the complexity of the recursive lease M-estimate (RLM) algorithm, The impulse noise suppression function ??(•) is modified. The analysis proves that the modified algorithm still meets the linear equation. In addition, the method of estimating the key threshold ? and ? in function ??(•) is provided, and the modified RLM algorithm to estimating the impulse response vector in the time-varying fading channel is applied. The simulation results show that the modified RLM algorithm is more robust against consecutive impulse noise and have better convergence ability than conventional recursive lease square (RLS).

Key words: recursive lease m-estimate algorithm, cost function, forgetting factor, Kalman gain, auto-regressive model

CLC Number: