TY - GEN
T1 - Coded cooperation in OFDMA systems
AU - Niu, Jun
AU - Lu, I. Tai
PY - 2006
Y1 - 2006
N2 - A novel time-frequency cooperative communication strategy is proposed for coded OFDMA system over quasi-static frequency-selective Rayleigh fading. To take advantage of the frequency dispersion, each user transmits his partner's and his own data on different subcarriers spreading over the entire available bandwidth. The allocation of subcarriers to each user and his partners can be either pre-specified or dynamically determined. Compared to other cooperative strategies using the time division orthogonal channel allocation, this cooperative strategy benefits from the freedom of subcarrier allocation and the "created" block fading channel during the cooperation process. The performance characteristic is developed in terms of pairwise error probability (PEP) and frame error probability to illustrate the improved diversity gain for various cooperation scenarios. Computer simulation results are provided to verify our theoretical analysis.
AB - A novel time-frequency cooperative communication strategy is proposed for coded OFDMA system over quasi-static frequency-selective Rayleigh fading. To take advantage of the frequency dispersion, each user transmits his partner's and his own data on different subcarriers spreading over the entire available bandwidth. The allocation of subcarriers to each user and his partners can be either pre-specified or dynamically determined. Compared to other cooperative strategies using the time division orthogonal channel allocation, this cooperative strategy benefits from the freedom of subcarrier allocation and the "created" block fading channel during the cooperation process. The performance characteristic is developed in terms of pairwise error probability (PEP) and frame error probability to illustrate the improved diversity gain for various cooperation scenarios. Computer simulation results are provided to verify our theoretical analysis.
KW - Cooperative diversity
KW - OFDMA
KW - Pairwise error probability
KW - Quasistatic frequency selective fading channel
UR - http://www.scopus.com/inward/record.url?scp=44049095974&partnerID=8YFLogxK
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U2 - 10.1109/CISS.2006.286482
DO - 10.1109/CISS.2006.286482
M3 - Conference contribution
AN - SCOPUS:44049095974
SN - 1424403502
SN - 9781424403509
T3 - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
SP - 300
EP - 305
BT - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 40th Annual Conference on Information Sciences and Systems, CISS 2006
Y2 - 22 March 2006 through 24 March 2006
ER -