Cooperative Relaying Using OFDM in the Presence of Frequency Offsets
Satya Prakash Ponnaluri, Babak Azimi-, Daniel F. McCarthy, Paul J. Oleski · 2010
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.