Data-aided frequency estimation for PSK signaling in frequency-selective fading

Author

Jeong, Eui-Rim ; Choi, Ginkyu ; Lee, Yong H.

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

19

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1408

Lastpage

1419

Abstract

A new data-aided frequency estimator is introduced for phase-shift keying signals transmitted over frequency-selective fading channels. This estimator is developed based on a maximum likelihood criterion. It assumes the use of a special class of pilots, called near-i.i.d. (independent identically distributed) sequences, with impulsive fourth-order moments. With the help of such pilots, the proposed method can estimate frequency offsets without the need for channel information. The pilots of GSM and IS-136 mobile communication systems have been observed as being near-i.i.d., and statistical analysis indicates that the proposed estimate is almost unbiased if the pilot is near-i.i.d. The advantage of the proposed estimator over conventional methods is demonstrated via computer simulation

Keywords

cellular radio; fading channels; frequency estimation; maximum likelihood estimation; phase shift keying; sequences; statistical analysis; telecommunication signalling; GSM; IS-136; PSK signaling; data-aided frequency estimation; frequency offsets; frequency-selective fading channels; impulsive fourth-order moments; independent identically distributed sequences; maximum likelihood; mobile communication systems; near-i.i.d. sequences; phase-shift keying; statistical analysis; AWGN; Automatic frequency control; Demodulation; Frequency estimation; Frequency-selective fading channels; Intersymbol interference; Maximum likelihood estimation; Phase shift keying; Statistical analysis; Timing;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.932707

Filename

932707