Title :
BER-based power allocation for Amplify-and-Forward and Decode-and-Forward relaying systems
Author :
Wu, Meng ; Wübben, Dirk ; Dekorsy, Armin
Author_Institution :
Dept. of Commun. Eng., Univ. of Bremen, Bremen, Germany
Abstract :
In this paper, power allocation schemes are proposed for the total transmit power of the source and the relay in a triplet relaying system based on Bit Error Rate (BER) analysis. Considering Amplify-and-Forward (AF), Decode-and-Forward (DF) for relaying systems and direct transmission (DT) without relay, we perform a fair comparison with respect to their power consumption in order to achieve the same target BER at the destination. For coded systems, the relationship between the input and the output BERs of the decoder for specific channel codes is modeled by polynomials to facilitate the BER analysis. Additionally, the Feasible Relay Region (FRR) is investigated, which determines geographically when AF or DF outperforms DT.
Keywords :
amplify and forward communication; channel coding; decode and forward communication; error statistics; polynomials; BER analysis; BER-based power allocation; FRR; amplify-and-forward relaying system; bit error rate analysis; channel codes; coded systems; decode-and-forward relaying systems; direct transmission without relay; feasible relay region; polynomials; power allocation schemes; total transmit power; triplet relaying system; Bit error rate; Decoding; Optimization; Relays; Resource management; Signal to noise ratio; Strontium;
Conference_Titel :
Smart Antennas (WSA), 2011 International ITG Workshop on
Conference_Location :
Aachen
Print_ISBN :
978-1-61284-075-8
Electronic_ISBN :
978-1-61284-073-4
DOI :
10.1109/WSA.2011.5741925
