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http://dx.doi.org/10.7840/KICS.2012.37A.4.227

Design of Time-Division Half-Duplex Estimate and Forward Relaying System  

Hwang, In-Ho (중앙대학교 전자전기공학부 통신 및 부호이론 연구실)
Kim, Jee-Young (중앙대학교 전자전기공학부 통신 및 부호이론 연구실)
Lee, Jeong-Woo (중앙대학교 전자전기공학부 통신 및 부호이론 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.4A, 2012 , pp. 227-238 More about this Journal
Abstract
In this paper, we propose a practical time-division half-duplex Estimate and Forward (EF) relaying protocol. The conventional EF relaying protocol works well only when the relay node is near the destination node. The proposed EF relaying protocol, however, determines adaptively relay parameters such as the quantization level of relay node and the power allocation between source and relay nodes according to the channel conditions. By doing so, the proposed EF relaying protocol provides low probability of bit error even when the relay node is far from the destination node. Consequently, the proposed EF protocol is suitable for the mobile relay systems. It is shown by simulations that the proposed EF relaying protocol shows lower bit error rate for all relay positions than a conventional EF protocol.
Keywords
Estimate and Forward (EF) relaying protocol; time-division half-duplex relay system; quantization; power allocation; error probability;
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