DocumentCode :
48040
Title :
Performance of Full-Duplex AF Relaying in the Presence of Residual Self-Interference
Author :
Jimenez Rodriguez, Leonardo ; Tran, Nghi H. ; Tho Le-Ngoc
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Volume :
32
Issue :
9
fYear :
2014
fDate :
Sept. 2014
Firstpage :
1752
Lastpage :
1764
Abstract :
This paper investigates the error and diversity performances of full-duplex (FD) amplify-and-forward (AF) singlerelay systems under the effect of residual self-interference. The variance of this interference is assumed to be proportional to the λ-th power of the transmitted power (0 ≤ λ ≤ 1). The study considers the cooperative linear relaying protocol with direct source-destination link and the dual-hop scheme without direct link, both under uncoded and coded frameworks. At first, closed-form pairwise error probability expressions are derived for the uncoded systems, which are then used to obtain tight bounds to the bit error rate (BER) of the coded systems. To shed an insight on the diversity behavior, asymptotic expressions at high transmission powers are also presented. Different from previous works that treat the direct link as interference, this paper shows that FD linear relaying systems with a suitable precoder can attain the same diversity function as their half-duplex (HD) counterparts. However, further analysis shows that HD orthogonal AF using a superposition constellation is asymptotically optimal in terms of maximum coding gain. In addition, it is shown that the diversity of FD dual-hop systems is a decreasing function of λ and is equal to zero when λ = 1. Although HD relaying is asymptotically optimal under the considered protocols and interference model, illustrative results show that FD relaying is advantageous at practical BER levels when λ is sufficiently small.
Keywords :
amplify and forward communication; cooperative communication; diversity reception; error statistics; protocols; radiofrequency interference; relay networks (telecommunication); BER level; FD AF single-relay systems; FD dual-hop systems; FD linear relaying system; HD counterpart; HD orthogonal AF; HD relaying; asymptotic expression; bit error rate; closed-form pairwise error probability expression; coded framework; coded system BER; cooperative linear relaying protocol; direct source-destination link; diversity behavior; diversity function; dual-hop scheme; full-duplex AF relaying; full-duplex amplify-and-forward single-relay systems; half-duplex counterpart; interference model; interference variance; maximum coding gain; residual self-interference effect; residual self-interference presence; superposition constellation; transmitted power; uncoded framework; Bit error rate; High definition video; Interference; Pairwise error probability; Protocols; Relays; Vectors; Amplify-and-forward; diversity; full-duplex; relay channel; self-interference;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.2014.2330151
Filename :
6832455
Link To Document :
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