Joint channel estimation and phase noise suppression for OFDM systems

Author

Lee, Jong-Ho ; Yang, Jun-Seok ; Kim, Seong-Cheol ; Park, Yong-Wan

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea

Volume

1

fYear

2005

fDate

30 May-1 June 2005

Firstpage

467

Abstract

A joint channel estimation and phase noise suppression scheme for orthogonal frequency-division multiplexing (OFDM) systems is proposed for a case where channel estimation is needed symbol by symbol. In the proposed scheme, channel estimation and phase noise suppression are performed iteratively via the expectation-maximization (EM) algorithm. The proposed algorithm mitigates the performance degradation due to phase noise effectively while providing an accurate channel estimate with comparatively few pilot subcarriers, so that the spectral efficiency of the OFDM system is improved.

Keywords

OFDM modulation; channel estimation; expectation-maximisation algorithm; fading channels; interference suppression; phase noise; OFDM systems; channel estimation; expectation-maximization algorithm; frequency selective fading channels; orthogonal frequency-division multiplexing systems; phase noise suppression; spectral efficiency; Channel estimation; Computer science; Discrete Fourier transforms; Fading; Frequency division multiplexing; Iterative algorithms; Neural networks; OFDM; Phase estimation; Phase noise; Channel estimation; EM; OFDM; phase noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543334

Filename

1543334