TY - GEN
T1 - Minimizing power in wireless OFDMA with limited-rate feedback
AU - Marques, Antonio G.
AU - Giannakis, Georgios B
AU - Digham, Fadel F.
AU - Ramos, F. Javier
PY - 2007
Y1 - 2007
N2 - Emerging applications involving low-cost wireless sensor networks motivate well optimization of multi-user orthogonal frequency-division multiple access (OFDMA) in the power-limited regime. In this context, the present paper relies on limited-rate feedback (LRF) sent from the access point to terminals to minimize the total average transmit-power under individual average rate and error probability constraints. The characterization of optimal bit, power and subcarrier allocation policies based on LRF, as well as optimal channel quantization are provided. Numerical examples corroborate the analytical claims and reveal that significant power savings result even with few fed back bits.
AB - Emerging applications involving low-cost wireless sensor networks motivate well optimization of multi-user orthogonal frequency-division multiple access (OFDMA) in the power-limited regime. In this context, the present paper relies on limited-rate feedback (LRF) sent from the access point to terminals to minimize the total average transmit-power under individual average rate and error probability constraints. The characterization of optimal bit, power and subcarrier allocation policies based on LRF, as well as optimal channel quantization are provided. Numerical examples corroborate the analytical claims and reveal that significant power savings result even with few fed back bits.
UR - https://www.scopus.com/pages/publications/36349037018
UR - https://www.scopus.com/pages/publications/36349037018#tab=citedBy
U2 - 10.1109/WCNC.2007.258
DO - 10.1109/WCNC.2007.258
M3 - Conference contribution
AN - SCOPUS:36349037018
SN - 1424406595
SN - 9781424406593
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 1368
EP - 1373
BT - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
T2 - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Y2 - 11 March 2007 through 15 March 2007
ER -