Title :
A distributed on-off amplify-and-forward protocol for the fading parallel relay channel
Author :
Dai, Mingjun ; Chi Sung
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong, China
Abstract :
A single source-destination pair communicating via a layer of two parallel relay nodes under slow fading is considered. The bit error rate (BER) performance of Alamouti-Coded Amplify-and-Forward (ACAF) transmission protocol under different power control strategies is investigated. The optimal power control rule is analytically derived and two distributed approximations to this rule are proposed. The optimal rule reveals an interesting fact: The transmission of each relay is on-off in nature. Simulation results show that our proposed distributed approximations improve the BER performance significantly.
Keywords :
codes; error statistics; fading channels; optimal control; power control; protocols; telecommunication control; ACAF transmission protocol; Alamouti-coded amplify-and-forward transmission; bit error rate; distributed approximations; distributed on-off amplify-and-forward protocol; fading parallel relay channel; optimal power control rule; parallel relay nodes; power control strategies; single source-destination pair; slow fading; Aggregates; Bit error rate; Digital relays; Fading; Power control; Power system modeling; Power system relaying; Protocols; Reactive power; Transmitting antennas; Alamouti scheme, amplify-and-forward (AF), power control, parallel relay channel;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.090580
