Elements of Information Theory (Wiley Series in Telecommunications and Signal Processing)
Elements of Information Theory (Wiley Series in Telecommunications and Signal Processing)
Relaying protocols for two colocated users
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
Fast transfer of channel state information in wireless systems
IEEE Transactions on Signal Processing
Diversity through coded cooperation
IEEE Transactions on Wireless Communications
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
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We noticed that in a relay system, the assumption of global Channel State Information (CSI) knowledge is unrealistic and normally, only the receiver but not the transmitter side has CSI knowledge. In this paper, we analyzed, with receive CSI, the performance of hybrid relaying scheme in the half-duplex relay channel in terms of the outage probability and expected throughput, where the relay switches between decode-and-forward (DF) and compress-and-forward (CF) modes adaptively according to the current channel realizations. Moreover, since the original CF technique requires global CSI at the relay to calculate the optimal compression rate, we established a restricted feedback link to convey extremely limited CSI (only 3 bits in our results) from the destination to the relay and develop a more practical hybrid relaying scheme. Simulation results revealed that the hybrid relaying scheme with restricted feedback outperforms DF especially when the link between source and relay is of low quality.