TY - GEN
T1 - Rate maximization for multiband OFDM ultra wideband systems using adaptive power and bit loading algorithm
AU - Zeng, Liaoyuan
AU - McGrath, Sean
AU - Cano, Eduardo
PY - 2009
Y1 - 2009
N2 - A new design for maximizing the data rate of the multiband orthogonal frequency division multiplexing ultra wideband systems is presented. The design is based on the generation of a series of M-ary quadrature amplitude modulation zones for each UWB subcarrier whose levels of fading depend on the UWB channel model. The available transmitted power is then optimally distributed to use the modulation scheme with the maximum M in the subcarriers. The optimization is constrained by the target bit error rate and the limitation of the UWB transmit power spectral density in each subcarrier. The rate maximization has been obtained in a three-step algorithm consisting of M-QAM zones generation, primary and advanced power and bit loading. The performance of the proposed algorithm is analyzed over UWB channel. The results show that the data rate is significantly improved by an advanced power and bit loading scheme.
AB - A new design for maximizing the data rate of the multiband orthogonal frequency division multiplexing ultra wideband systems is presented. The design is based on the generation of a series of M-ary quadrature amplitude modulation zones for each UWB subcarrier whose levels of fading depend on the UWB channel model. The available transmitted power is then optimally distributed to use the modulation scheme with the maximum M in the subcarriers. The optimization is constrained by the target bit error rate and the limitation of the UWB transmit power spectral density in each subcarrier. The rate maximization has been obtained in a three-step algorithm consisting of M-QAM zones generation, primary and advanced power and bit loading. The performance of the proposed algorithm is analyzed over UWB channel. The results show that the data rate is significantly improved by an advanced power and bit loading scheme.
UR - http://www.scopus.com/inward/record.url?scp=70349731428&partnerID=8YFLogxK
U2 - 10.1109/AICT.2009.69
DO - 10.1109/AICT.2009.69
M3 - Conference contribution
AN - SCOPUS:70349731428
SN - 9780769536118
T3 - Proceedings of the 2009 5th Advanced International Conference on Telecommunications, AICT 2009
SP - 369
EP - 374
BT - Proceedings of the 2009 5th Advanced International Conference on Telecommunications, AICT 2009
T2 - 2009 5th Advanced International Conference on Telecommunications, AICT 2009
Y2 - 24 May 2009 through 28 May 2009
ER -