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

fYear

2011

fDate

24-25 Feb. 2011

Firstpage

1

Lastpage

8

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WSA.2011.5741925

Filename

5741925