Cooperative Relaying Using OFDM in the Presence of Frequency Offsets

Author

Ponnaluri, Satya Prakash ; Azimi-Sadjadi, Babak ; McCarthy, Daniel ; Oleski, Paul J.

Author_Institution

Intell. Autom., Inc., Rockville, MD, USA

fYear

2010

fDate

6-10 Dec. 2010

Firstpage

1

Lastpage

6

Abstract

We study the performance of cooperative relaying using orthogonal frequency division multiplexing (OFDM) in the presence of frequency offsets due to Doppler shifts and oscillator instabilities. Through this study, several aspects of transmitter and receiver design, including channel coding, subcarrier mapping and channel estimation are brought to light. We develop two linear front-end receiver architectures based on practical single-user OFDM receivers, and demonstrate the performance using simulations under quasi-static multipath fading channel conditions.

Keywords

Doppler shift; OFDM modulation; cooperative communication; fading channels; Doppler shifts; channel coding; channel estimation; cooperative relaying; frequency offsets; linear front-end receiver architectures; orthogonal frequency division multiplexing; oscillator instability; quasi-static multipath fading channel; single-user OFDM receivers; subcarrier mapping; Channel estimation; Fading; Frequency estimation; Interference; OFDM; Receivers; Relays;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE

Conference_Location

Miami, FL

ISSN

1930-529X

Print_ISBN

978-1-4244-5636-9

Electronic_ISBN

1930-529X

Type

conf

DOI

10.1109/GLOCOM.2010.5684223

Filename

5684223