Browse > Article

Effect of Residual Frequency Offsets on the Performance of Adaptive Equalizers  

Kim, Young-Wha (Hanyang University, Graduate school of Electronics)
Cho, Sung-Ho (Hanyang University, Graduate school of Electronics)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.4E, 2004 , pp. 108-111 More about this Journal
Abstract
This paper has interest in the effect of a fine frequency offset, defined in ITU-T G.225, to the training performance of an adaptive equalizer. This paper uses Hilbert filter in configuring a transmission system model in order to let it get a frequency offset. Also additive white Gaussian noise and band-limited filter are considered. The signal received from the above transmission system applies to an adaptive equalizer with LMS algorithm, and its training procedures are investigated. As a result, we could find that even small fine frequency offset can severely deteriorate training performance of adaptive algorithm.
Keywords
Frequency offset; Adaptive equalizer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 John. G. Proakis, Digital communications, Fourth edition, (McGraw-Hill, New York, 2000)
2 P. G. Fontolliet, Telecommunication systems, Artech House Inc.,1986
3 ITU-T Recommendation G.225, Intemational analogue cairier systems,General characteristics common to all analogue carrier transmissionsystems, Blue book, Fascicle Ⅲ.2, ITU, Nov. 1993
4 B. Widrow and S. D. Stearns, Adaptive signal processing, PrentiCe-Hall, 1985
5 Young W. Kim, et al, 'Method for detecting fine frequency deviation,'United States PATENT 5,452,320, SeP. 1995
6 Korea Telecom Report, 'A quality measurement for managing thedata transmission channel,' pp.37-43, Nov. 1985