Block double differential design for OFDM with carrier frequency offset

Author

Ma, Xiaoli

Author_Institution

Dept. of Electr. & Comput. Eng., Auburn Univ., AL, USA

Volume

3

fYear

2005

fDate

18-23 March 2005

Abstract

Carrier frequency offset (CFO) estimation for orthogonal frequency division multiplexing (OFDM) has caught attention as OFDM systems have become widely adopted in recent years. In this paper, we design a novel double differential codec with low computational complexity. Our design bypasses CFO and channel estimation and is easy to be implemented at both transmitter and receiver. It also guarantees full multipath diversity, and reduces the peak-to-average power ratio from the number of subcarriers to the channel order. In addition, it is robust to CFO drifting. The closed form of the performance for our design is derived for OFDM transmissions over frequency-selective channels with CFO. Thorough simulation results corroborate our claims.

Keywords

OFDM modulation; codecs; differential detection; diversity reception; frequency estimation; radio receivers; radio transmitters; CFO drifting; CFO estimation; OFDM; block double differential design; carrier frequency offset; double differential codec; frequency-selective channels; full multipath diversity; orthogonal frequency division multiplexing; performance; receiver; reduced peak-to-average power ratio; transmitter; Bit error rate; Channel estimation; Codecs; Computational complexity; Decoding; Frequency estimation; OFDM; Peak to average power ratio; Robustness; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8874-7

Type

conf

DOI

10.1109/ICASSP.2005.1415834

Filename

1415834