Non-data-aided spectral-line method for fine carrier frequency synchronization in OFDM receivers

A nonlinear spectral-line method utilizing the fourth absolute moment of the receiver discrete Fourier transform output is proposed as a non-data-aided fine carrier frequency synchronization algorithm for OFDM receivers. A simple modification of the algorithm resulting in low implementation complexi...

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Veröffentlicht in:Journal of communications and networks Jg. 6; H. 2; S. 112 - 122
Hauptverfasser: Roh, Heejin, Cheun, Kyungwhoon
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Séoul Editorial Department of Journal of Communications and Networks 01.06.2004
Korean Institute of Communication Sciences
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
한국통신학회
Schlagworte:
Algorithms
Applied sciences
Carrier frequencies
Discrete Fourier transforms
Exact sciences and technology
Fourier transforms
Frequency modulation
Frequency offset
Frequency synchronization
Information, signal and communications theory
interchannel interference
Line spectra
multi-path channels
Multiplexing
OFDM
Orthogonal Frequency Division Multiplexing
orthogonal frequency division multiplexing (OFDM)
Phase shift keying
Radiocommunications
Receivers
Signal and communications theory
Steady state
synchronization
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitters. Receivers
전자/정보통신공학
Performance evaluation
Spectral method
Discrete Fourier transformation
Receiver
Synchronization
Algorithm
Steady state
Multipath channels
Clock recovery
AWGN channels
Phase shift keying
Frequency selection
Carrier frequency
Symbol manipulation
Orthogonal frequency division multiplexing
Numerical simulation
Adjacent channel interference
Frequency offset
ISSN:1229-2370, 1976-5541
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:A nonlinear spectral-line method utilizing the fourth absolute moment of the receiver discrete Fourier transform output is proposed as a non-data-aided fine carrier frequency synchronization algorithm for OFDM receivers. A simple modification of the algorithm resulting in low implementation complexity is also developed. Analytic expressions are derived for the steady-state frequency error variances of the algorithms and verified to be very accurate via computer simulations over AWGN and frequency selective multipath channels. Numerical results show that the proposed algorithms provide reliable and excellent steady-state performance, especially with PSK modulation. Also, the proposed algorithms are insensitive to symbol timing offsets, only requiring a coarse symbol timing recovery.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
G704-000784.2004.6.2.010
ISSN:1229-2370
1976-5541
DOI:10.1109/JCN.2004.6596632