A novel frequency reversal transmission for cooperative networks with frequency offsets
Yun Li, Hua Jiang, Yao Yu, Sidan Du · 2016 SAI Computing Conference (SAI) · 2016
In this paper, we dedicate to fighting against the multiple carrier frequency offsets (MCFOs) in two-relay decode-and-forward (DF) cooperative networks. A full-rate code named frequency reversal Alamouti code (FRAC) is designed for two-relay cooperative orthogonal frequency-division multiplexing (OFDM) networks. Reversal makes the equivalent channel matrix between the relays and the destination complex orthogonalized. The transmission is capable of achieving full diversity through using a zero-forcing (ZF) decoder. Benefiting from FRAC, operations during equalization at the destination are of low complexity. Theoretical analysis and simulation results both demonstrate that the proposed scheme can completely eliminate the effect of MCFOs.