Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset

Satoshi Denno; Yoichi Saito

doi:10.1109/ICC.1992.268082

Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents the performances of recursive least squares (RLS) estimations for AFC and APC in the presence of frequency offset in order to attain the fast acquisition in TDMA systems. New algorithm for APC following quasi-coherent detection is proposed to estimate both frequency offset and initial phase error using RLS algorithms. Therefore, this algorithm has the advantages of fast convergence and robustness against the additive noise in the presence of frequency offset as well as RLS estimation for differential detection. It is verified experimentally that the estimators for 16QAM quasi-coherent detection and n/4-QPSK differential detection have good performance in the presence of frequency offset, and that the RLS estimator attains convergence in 10 symbols.

Original language	English
Title of host publication	1992 International Conference on Communications
Subtitle of host publication	Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	491-495
Number of pages	5
ISBN (Electronic)	078030599X
DOIs	https://doi.org/10.1109/ICC.1992.268082
Publication status	Published - Jan 1 1992
Externally published	Yes
Event	1992 IEEE International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Chicago, United States Duration: Jun 14 1992 → Jun 18 1992

Publication series

Name	IEEE International Conference on Communications
ISSN (Print)	1550-3607

Conference

Conference	1992 IEEE International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992
Country/Territory	United States
City	Chicago
Period	6/14/92 → 6/18/92

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC.1992.268082

Cite this

Denno, S., & Saito, Y. (1992). Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset. In 1992 International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record (pp. 491-495). [268082] (IEEE International Conference on Communications). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.1992.268082

Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset. / Denno, Satoshi; Saito, Yoichi.
1992 International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record. Institute of Electrical and Electronics Engineers Inc., 1992. p. 491-495 268082 (IEEE International Conference on Communications).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Denno, S & Saito, Y 1992, Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset. in 1992 International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record., 268082, IEEE International Conference on Communications, Institute of Electrical and Electronics Engineers Inc., pp. 491-495, 1992 IEEE International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992, Chicago, United States, 6/14/92. https://doi.org/10.1109/ICC.1992.268082

Denno S, Saito Y. Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset. In 1992 International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record. Institute of Electrical and Electronics Engineers Inc. 1992. p. 491-495. 268082. (IEEE International Conference on Communications). doi: 10.1109/ICC.1992.268082

Denno, Satoshi ; Saito, Yoichi. / Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset. 1992 International Conference on Communications: Discovering a New World of Communications, SUPERCOMM/ICC 1992 - Conference Record. Institute of Electrical and Electronics Engineers Inc., 1992. pp. 491-495 (IEEE International Conference on Communications).

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abstract = "This paper presents the performances of recursive least squares (RLS) estimations for AFC and APC in the presence of frequency offset in order to attain the fast acquisition in TDMA systems. New algorithm for APC following quasi-coherent detection is proposed to estimate both frequency offset and initial phase error using RLS algorithms. Therefore, this algorithm has the advantages of fast convergence and robustness against the additive noise in the presence of frequency offset as well as RLS estimation for differential detection. It is verified experimentally that the estimators for 16QAM quasi-coherent detection and n/4-QPSK differential detection have good performance in the presence of frequency offset, and that the RLS estimator attains convergence in 10 symbols.",

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AB - This paper presents the performances of recursive least squares (RLS) estimations for AFC and APC in the presence of frequency offset in order to attain the fast acquisition in TDMA systems. New algorithm for APC following quasi-coherent detection is proposed to estimate both frequency offset and initial phase error using RLS algorithms. Therefore, this algorithm has the advantages of fast convergence and robustness against the additive noise in the presence of frequency offset as well as RLS estimation for differential detection. It is verified experimentally that the estimators for 16QAM quasi-coherent detection and n/4-QPSK differential detection have good performance in the presence of frequency offset, and that the RLS estimator attains convergence in 10 symbols.

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Recursive least squares estimation for QAM and QPSK signals in the presence of frequency offset

Abstract

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