Title :
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
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;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5684223
