TY - GEN
T1 - A peak power efficient cooperative diversity using star-QAM
AU - Ishibashi, Koji
AU - Shin, Won Yong
AU - Yi, Hyo Seok
AU - Ochiai, Hideki
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84858409955&partnerID=8YFLogxK
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U2 - 10.1109/GLOCOMW.2011.6162414
DO - 10.1109/GLOCOMW.2011.6162414
M3 - Conference contribution
AN - SCOPUS:84858409955
SN - 9781467300407
T3 - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
SP - 1388
EP - 1392
BT - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
T2 - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
Y2 - 5 December 2011 through 9 December 2011
ER -