Browse > Article

Proposal Of Optimum Equalizer Hardware Architecture for Cable Modem and Analysis of Various LMS Algorithms  

Cho, Yeon-Gon (성균관대학교 전기전자 및 컴퓨터 공학부)
Yu, Hyeong-Seok (성균관대학교 전기전자 및 컴퓨터 공학부)
Kim, Byung-Wook (성균관대학교 전기전자 및 컴퓨터 공학부)
Cho, Jun-Dong (성균관대학교 전기전자 및 컴퓨터 공학부)
Kim, Jea-Woo (삼성전자 SOC기술연구소)
Lee, Jae-Kon (삼성전자 SOC기술연구소)
Park, Hyun-Chul (ICU)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.2C, 2002 , pp. 150-159 More about this Journal
Abstract
This paper presents the convergence time, SER(Symbol Error Rate), MSE(Mean Square Error), hardware complexity and step-size(${\mu}$) about various LMS(Least Mean Square) algorithms in FS-DFE(Fractionally Spaced-Decision Feedback Equalize) for Cable Modem based on MCNS(Multimedia Cable Network System) DOCSIS(Data Over Cable Service Interface Specification) v1.0/v1.1 standards. We designed and simulated using ${SPW}^{TM}$ and synthesized using STD90 library through ${SYNOPSYS}^{TM}$. And also, we adopted the time-multiplexed multiplication and tap shared architecture in order to achieve the low hardware complexity. Simulation results show that DS-LMS algorithms[1][3] is the optimum solution about performace and hardware size. in high order QAM applications. Finally, we achieved area saving about 58% using DS-LMS algorithm compare with conventional equalizer architecture.
Keywords
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. R. Treichler and B. G. Agee, 'A new approach to multipath correction of constant modulus signals,' IEEE Trans. Acoust., Speech, Signat Processing, vol. ASSP-31, pp.459-472, Apr. 1983
2 Jinbiao Xu, Yumin Wang, 'New DeCiSiOn-Directed Equalization Algorithm for QAM Communication Systems,' IEEE, 1996
3 T. J. Endres, B.D.O.Anderson, C. R. Johnson, Jr., and M. Green, 'Robustness to Practionally-Spaced Equalizer Length Using the Constant Modulus Criterion,' IEEE Transactions on signal processing, vol. 47, No. 2, February 1999
4 Lionel J. D'Luna, Loke K. Tan, Dean Mueller, Joe L. Laskowski, Kelly Cameron, Jind-Yeh Lee, David Gee, Jason S. Monroe, Honman S. Law, Jason Chang, Myles H. Wakayama, Tom Kwan, Chi-Hung Lin, Aaron Buchwald, Tarek Kaylani, Fang Lu, Tom Spieker, Robert Hawley, Henry Samueli, 'A Single-Chip Universal Cable Set-Top Box/Modem Trans-ceiver,' 1EEE Journat of Sotid-State Circuits, vol. 34, No. 11, November 1999
5 D. N. Godard, 'Self-recovering equalization and carrier tracking in two-dimensional data communication systems,' IEEE Trans .Commun., vol. COMM-28, pp. 1867-1875, Nov. 1980
6 C. R. Johnson, Jr. et al., 'Blind equalization using the constant modulus criterion: A review,' Proc. IEEE (Speciat Issue on BlindSystem Identification and Estimation), vol. 86, pp. 1927-1950, Oct. 1998
7 O. Macchi and E.Eweda,'Convergence analysis of Self-Adaptive Equalizer,' IEEE Trans. IT, vol. IT-30, No.2, March 1984, pp.161-176
8 N. Wiener, 'Extiapolation, Interpolation and Smothing of Stationary Time Series, with Engineering Applicadons,' New York : Technology Press and Wiley, 1949
9 윤대회, '적응 디지탈 필터와 그 응용' 대한 전자공학회 논문지 제 12권 제 5호, 1985
10 Mark C. Sullivan, 'A Signed Maximum Correlation Multiplier for LMS Pilter Adaptation,' IEEE Trans on signal processing. vol. 41. No. 1. January 1993
11 Hyeongseok Yu, Byung Wook Kim, Yeon Gon Cho, Jun Dong Cho, Jea Woo Kim, Jae Kon Lee, Hyeon Cheol Park, Ki Won Lee, 'Area-Efficient and Reusalble VLSI Architec-ture of Decision Feedback Equalizer for QAM Modem, proc, ASP-DAC2001, pp. 404-407 January, 2001
12 Yeon Gon Cho, Byung Wook Kim, Hyeong-seok Yu, Jun Dong Cho, Jea Woo Kim, Jae Kon Lee, Hyun Chul Park, Ki Won Lee, ' On the various LMS Algorithms for FS-DFE with Low Hardware Complexity suitable for the High Order QAM Applica-don,' proc, SCS2001, PP. 277-280, July, 2001
13 N. K. Jablon, 'Joint blind equalization, cairier recovery, and timing recovery for high-order QAM signal constellations,' IEEE Trans. Sienat Processing, vol. SP-40, PP. 1383-1398 June 1992
14 Jie Zhu, Xi-Ren Cao, Ruey-wen Liu, 'A Blind Fractionally Sapced Equalizer Using Higher Order Statistics,' lEEE transactions on circuits and systems- H: Analog and DigitalSignal Processing, vol. 46, No. 6, June 1999