Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.760630
