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A high performance QAM receiver for digital cable TV with integrated A/D and FEC decoder

Published: 18 January 2005 Publication History

Abstract

A DVB-C/ITU J.83-A compliant QAM (Quadrature Amplitude Modulation) demodulator suitable for digital cable TV is proposed, which can support 4~256QAM with variable bit rate up to 80Mbps. It integrates a 10-bit 40MSPS ADC, (204,188) Reed-Solomon decoder as well as a convolutional interleaver. The chip is implemented in SMIC 0.25um CMOS technology with die size of 3.5x3.5 mm2. It features wide carrier offset acquisition range, robust demodulation algorithm and small circuit area.

References

[1]
ETSI, EN 300429 Digital Video Broadcasting (DVB) Framing structure, channel coding and modulation for cable systems, 1998
[2]
L. K. Tan, J. S. Putnam, et.al.,"70-Mb/s variable-rate 1024-QAM cable receiver IC with integrated 10-b ADC and FEC Decoder", IEEE J.S.S.C, Vol. 33, No.12. pp. 2205--2218, Dec. 1998.
[3]
K. Yamanaka, S. Takeuchi, S. Murakami, et al, "A multilevel QAM demodulator VLSI with wideband carrier recovery and dual equalizing mode," IEEE J.S.S.C, pp. 1101--1107 July 1997.
[4]
L. J. D'Luna, L. K. Tan, D. Mueller, et al, "A single-chip universal cable set-top box/modem transceiver," IEEE J.S.S.C, pp. 1647--1660, Nov. 1999.
[5]
Yongxue Zhang; Haidong Fei; Lixin Yu; et al, "Practical implementation of blind equalization, carrier recovery and timing recovery for QAM cable receiver chip", Proceedings. of 5th International Conference on ASIC, pp. 886--889, Oct. 2003
[6]
Daekyo Shin; Ki Hyuk Park; Sunwoo, M. H. "A 64/256 QAM receiver chip for high-speed communications", Proceedings of 13th Annual IEEE International ASIC/SOC Conference, pp. 214 -- 218, Sept. 2000
[7]
T. Fukuoka, Y. Nakai, D. Hayashi, et al, "An area effective 1-chip QAM LSI for digital CATV," Digest of ICCE, pp. 276 -- 277, June 1997
[8]
K. H. Park, D. K. Shin, J. S. Lee, et al, "Design of a QPSK/16 QAM LMDS downstream receiver ASIC chip," IEEE Workshop on Signal Processing Systems, pp. 210 -- 217, Oct. 2000
[9]
Thomas J. K., "HFC Channel Model Submission," IEEE PROJECT 802.14 Cable TV Protocol Working Group, May 1998.
[10]
K. Y. Kim and H. J. Choi, "Design of carrier recovery algorithm for high-order QAM with large frequency acquisition range," in Proc. ICC'01, Finland, pp. 1016--1020, June 2001.
[11]
Yuan Ouyang and Chin-liang Wang, "A new carrier recovery loop for high-order quadrature amplitude modulation," Global Telecommunication Conference 2002, GLOBECOM '02, pp. 478--482.

Cited By

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  • (2009)The analysis of DVB-C signal in the digital television cable networksProceedings of the 8th WSEAS international conference on Data networks, communications, computers10.5555/1670344.1670381(231-235)Online publication date: 1-Nov-2009
  • (2007)FPGA Implementation of a Configurable Complex Blind Adaptive Equalizer2007 IEEE International Symposium on Signal Processing and Information Technology10.1109/ISSPIT.2007.4458069(150-153)Online publication date: Dec-2007
  • (2007)A configurable fractionally-spaced blind adaptive equalizer for QAM demodulatorsDigital Signal Processing10.1016/j.dsp.2006.10.00917:6(1071-1088)Online publication date: 1-Nov-2007
  1. A high performance QAM receiver for digital cable TV with integrated A/D and FEC decoder

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      cover image ACM Conferences
      ASP-DAC '05: Proceedings of the 2005 Asia and South Pacific Design Automation Conference
      January 2005
      1495 pages
      ISBN:0780387376
      DOI:10.1145/1120725
      • General Chair:
      • Ting-Ao Tang
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 18 January 2005

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      View all
      • (2009)The analysis of DVB-C signal in the digital television cable networksProceedings of the 8th WSEAS international conference on Data networks, communications, computers10.5555/1670344.1670381(231-235)Online publication date: 1-Nov-2009
      • (2007)FPGA Implementation of a Configurable Complex Blind Adaptive Equalizer2007 IEEE International Symposium on Signal Processing and Information Technology10.1109/ISSPIT.2007.4458069(150-153)Online publication date: Dec-2007
      • (2007)A configurable fractionally-spaced blind adaptive equalizer for QAM demodulatorsDigital Signal Processing10.1016/j.dsp.2006.10.00917:6(1071-1088)Online publication date: 1-Nov-2007

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