Two-Step Frequency Estimation Algorithm For PSAM Systems

Author

Wu, Luo ; Liu, Bin ; An, Liu

Author_Institution

Sch. of EECS, Peking Univ., Beijing

fYear

2006

fDate

27-30 Nov. 2006

Firstpage

1

Lastpage

3

Abstract

In this paper, we describe and analyze a new two-step frequency estimation algorithm for pilot symbol assisted modulation (PSAM) systems with a non-uniform pilot pattern. The burst structure includes some consecutive pilots at the beginning of each burst and some sparse ones over the burst. Compared with the FFT-based (Fast Fourier Transform based) algorithm, its computational complexity is reduced greatly. It facilitates the estimation of large frequency offsets and high accuracy. Its estimation range is about plusmn20% of the symbol rate and its accuracy is close to the Cramer-Rao bound (CRB) for a low signal-to-noise ratio (SNR).

Keywords

computational complexity; frequency estimation; quadrature phase shift keying; Cramer-Rao bound; PSAM systems; QPSK modulation; burst structure; computational complexity; nonuniform pilot pattern; pilot symbol assisted modulation systems; signal-to-noise ratio; two-step frequency estimation algorithm; AWGN; Additive white noise; Algorithm design and analysis; Computational complexity; Fast Fourier transforms; Frequency estimation; Matched filters; Pattern analysis; Sampling methods; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology, 2006. ICCT '06. International Conference on

Conference_Location

Guilin

Print_ISBN

1-4244-0800-8

Electronic_ISBN

1-4244-0801-6

Type

conf

DOI

10.1109/ICCT.2006.341806

Filename

4146407