An Adaptive Receiver Design for OFDM-Based Cooperative Relay Systems Using Conjugate Transmission

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
In this paper, the authors propose an adaptive receiver design for OFDM-based cooperative relay systems using two-path conjugate transmission to achieve both diversity reception and Inter-Carrier Interference (ICI) cancellation. Considering that the relayed signals are affected by statistically independent channel fading gains and different frequency offsets, the proposed receiver applies not only phase rotations but also an amplitude scaling factor, whose values are optimized based on criteria of maximizing the carrier-to-interference ratio and minimizing the ICI power, respectively, on the two receiving paths to improve ICI cancellation performance.

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