Decision-aided compensation of severe phase-impairment-induced inter-carrier interference in frequency-selective OFDM

Author

Nikitopoulos, Konstantinos ; Stefanatos, Stelios ; Katsaggelos, Aggelos K.

Author_Institution

Dept. of Phys., Nat. & Kapodistrian Univ. of Athens, Athens

Volume

8

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

1614

Lastpage

1619

Abstract

A new, reduced complexity algorithm is proposed for compensating the Inter-Carrier Interference (ICI) caused by severe PHase Noise (PHN) and Residual Frequency Offset (RFO) in OFDM systems. The algorithm estimates and compensates the most significant terms of the frequency domain ICI process, which are optimally selected via a Minimum Mean Squared Error (MMSE) criterion. The algorithm requires minimal knowledge of the phase process statistics, the estimation of which is also considered. The scheme outperforms previously proposed compensation methods of similar complexity, when severe phase impairments are present.

Keywords

OFDM modulation; intercarrier interference; interference suppression; mean square error methods; phase noise; statistical analysis; ICI compensation; MMSE criterion; decision-aided compensation; frequency-selective OFDM systems; minimum mean squared error; phase process statistics; phase-impairment-induced inter-carrier interference; reduced complexity algorithm; residual frequency offset; Discrete Fourier transforms; Employment; Error analysis; Frequency domain analysis; Frequency estimation; Interference; OFDM; Phase estimation; Phase noise; Statistics; Frequency offset; OFDM; inter-carrier interference; phase noise;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2009.071029

Filename

4907430