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

Volume

5

fYear

2010

fDate

26-28 Feb. 2010

Firstpage

432

Lastpage

435

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCAE.2010.5451237

Filename

5451237