Title :
Adaptive relay selection for hybrid relay systems
Author :
Heo, Ayoung ; Park, Jung-Hyun ; Jin, Seung-Ri ; Park, Dong-Jo
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
Hybrid relay systems using Amplify-and-Forward protocol (AF) and Decode-and-Forward protocol (DF) together are introduced in cooperative networks. For hybrid systems, we propose adaptive relay selection scheme to maximize the overall received Signal to Noise Ratio (SNR) at the destination. At first two relays are selected among many according to the instantaneous channel conditions. One is a relay to operate as the Amplify-and-Forward protocol and the other is a relay to operate as the Decode-and-Forward protocol. Next the total transmission power is allocated to the source and two selected relays. Simulation results show that the proposed scheme achieves better performance than that of conventional cooperative schemes.
Keywords :
protocols; radio networks; adaptive relay selection; amplify-and-forward protocol; cooperative networks; decode-and-forward protocol; hybrid relay systems; Adaptive systems; Antenna accessories; Decoding; Diversity methods; Electronic mail; Power system relaying; Protocols; Rayleigh channels; Relays; Signal to noise ratio; Amplify-and-Forward; Cooperative network; Decode-and-Forward; hybrid relay systems and relay selection;
Conference_Titel :
Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-5585-0
Electronic_ISBN :
978-1-4244-5586-7
DOI :
10.1109/ICCAE.2010.5451237
