Efficient method for carrier offset correction in OFDM system

Author

Ge, Hongya ; Wang, Kun

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

Volume

5

fYear

1999

fDate

1999

Firstpage

2467

Abstract

We present a simple approach to estimate and correct the carrier offset in an orthogonal frequency division multiplexing (OFDM) system. The approach leads to a computationally and statistically efficient estimator for the carrier offset. Computer simulations verify that the estimation accuracy is comparable to the Cramer-Rao bound (CRB). We demonstrated that by incorporating the estimated carrier offset (obtained using reasonable frames of OFDM data) in the demodulation process, the bit error rate (BER) can approach that of the ideal OFDM system with no carrier offset

Keywords

OFDM modulation; demodulation; error statistics; frequency estimation; maximum likelihood estimation; BER; CRB; Cramer-Rao bound; OFDM system; bit error rate; carrier offset correction; carrier offset estimation; computationally efficient estimator; computer simulations; conditional maximum likelihood function; demodulation; estimation accuracy; orthogonal frequency division multiplexing; statistically efficient estimator; Bandwidth; Bit error rate; Computer simulation; Digital communication; Frequency division multiplexing; Frequency estimation; Multiaccess communication; Narrowband; OFDM; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on

Conference_Location

Phoenix, AZ

ISSN

1520-6149

Print_ISBN

0-7803-5041-3

Type

conf

DOI

10.1109/ICASSP.1999.760630

Filename

760630