Experimental studies on an OFDM carrier frequency offset estimator

Author

Ambati, Rajesh ; Tureli, Ufuk

Author_Institution

Dept. of Electr. & Comput. Eng., Stevens Inst. of Technol., Hoboken, NJ, USA

Volume

3

fYear

2003

fDate

11-15 May 2003

Firstpage

2056

Abstract

In OFDM carrier frequency offset must be estimated and compensated at the receiver to maintain orthogonality. OFDM carrier frequency synchronization performance can be improved by using diversity. In this paper, we examine the sensitivity of the carrier frequency estimator against key system parameters in a practical implementation using real data obtained on the Stevens wireless testbed. The experimental setup is comprised of wideband 65 Msamples/second digital to analog converter, radio frequency (RF) transmitter, which transmits at 2.4 GHz frequency with 12 MHz bandwidth and RF receiver chains whose outputs are sampled at 65 Msamples/sec.

Keywords

OFDM modulation; diversity reception; frequency estimation; radio receivers; synchronisation; wireless LAN; 12 MHz; 2.4 GHz; OFDM; Stevens wireless testbed; carrier frequency offset estimation; digital to analog converter; offset compensation; orthogonal frequency division multiplexing; orthogonality; radiofrequency receiver; radiofrequency transmitter; Digital-analog conversion; Frequency conversion; Frequency estimation; Frequency synchronization; OFDM; Radio frequency; Radio transmitters; System testing; Wideband; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1203981

Filename

1203981