Design of carrier recovery for QAM/VSB dual mode

Shyh-Jye Jou, Hsin Yi Lin, Muh Tian Shiau, Jung Yu Heh, Chrong Kuang Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, an architecture and hardware implementation of the carrier recovery (CR) used in dual mode (QAM and VSB) transceiver for digital CATV is proposed. The proposed CR uses decision-directed approach with steep gradient algorithm, which can be used in both QAM and VSB signal. Thus, the hardware complexity for dual mode is dramatically reduced, while the performance is almost the same. To increase the acquisition range of CR, a frequency locked loop (FLL) is used in VSB mode while a derotator/rotator pair is adopted in QAM mode. As a result, the CR can reach ±100 KHz acquisition range. Finally, the CR is implemented by TSMC 0.35um 1P4M process. The total gate is 20820 and the maximum symbol rate is 21.52 M Baud.

Original languageEnglish
Title of host publication2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
EditorsLemin Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1535-1539
Number of pages5
ISBN (Electronic)0780375475, 9780780375475
DOIs
StatePublished - 1 Jan 2002
Event1st International Conference on Communications, Circuits and Systems, ICCCAS 2002 - Chengdu, China
Duration: 29 Jun 20021 Jul 2002

Publication series

Name2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
Volume2

Conference

Conference1st International Conference on Communications, Circuits and Systems, ICCCAS 2002
CountryChina
CityChengdu
Period29/06/021/07/02

Keywords

  • QAM
  • VSB
  • carrier recovery
  • timing recovery

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