Adaptive amplification for amplify-and-forward dual-hop cooperative systems
- Resource Type
- Conference
- Authors
- Wu, Tsan-Ming; Wang, Szu-Liang
- Source
- 2012 IEEE 16th International Symposium on Consumer Electronics Consumer Electronics (ISCE), 2012 IEEE 16th International Symposium on. :1-5 Jun, 2012
- Subject
- Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Relays
Reactive power
Signal to noise ratio
Gain
Adaptive systems
Fading
Wireless communication
- Language
- ISSN
- 0747-668X
2159-1423
The amplify-and-forward protocol is a simple but effective relaying for cooperative communications systems because its associated relay node does not take encoding/decoding into consideration to re-transmit signals. However, the interference and multipath fades during the previous hop are also amplified. In this paper, based on the zero-forcing (ZF) concept, an adaptive amplification factor is investigated to counteract the effects of the multipath-fading channel. Numerical results show that the ZF-based adaptive amplification according to both channel impulse responses possesses the best system performance in a dual-hop cooperative system.