A peak power efficient cooperative diversity using star-QAM

Author

Ishibashi, Koji ; Shin, Won-Yong ; Yi, Hyo Seok ; Ochiai, Hideki

Author_Institution

Sch. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA, USA

fYear

2011

fDate

5-9 Dec. 2011

Firstpage

1388

Lastpage

1392

Abstract

In this paper, we propose a new simple relaying strategy with bit-interleaved convolutionally coded star quadrature amplitude modulation (QAM). Star-QAM is composed of multiple concentric circles of phase-shift keying (PSK). Exploiting this property, a hard limiter is used to enhance power amplifier (PA) efficiency at a relay. We analyze our proposed cooperation in terms of asymptotic pairwise error probability (PEP) and show that it can achieve the full diversity order conditioned on that the minimum free distance d_free of the convolutional codes is large enough. Finally, theoretical results and effectiveness of PA efficiency are confirmed by computer simulations.

Keywords

convolutional codes; cooperative communication; diversity reception; error statistics; interleaved codes; phase shift keying; quadrature amplitude modulation; asymptotic pairwise error probability; bit-interleaved convolutional code; cooperative diversity; hard limiter; multiple concentric circles; phase shift keying; power amplifier; quadrature amplitude modulation; simple relaying strategy; star QAM; Bit error rate; Convolutional codes; Decoding; Fading; Phase shift keying; Quadrature amplitude modulation; Relays; amplify-and-forward (AF); amplitude-and-phase shift keying (APSK); cooperative diversity; power Amplifier (PA) Efficiency; star quadrature amplitude modulation (star-QAM);

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops (GC Wkshps), 2011 IEEE

Conference_Location

Houston, TX

Print_ISBN

978-1-4673-0039-1

Electronic_ISBN

978-1-4673-0038-4

Type

conf

DOI

10.1109/GLOCOMW.2011.6162414

Filename

6162414