Title :
Performance of Equal Power Subchannel Loading in Multiuser OFDM systems
Author :
Zhang, Yonghong ; Leung, Cyril
Author_Institution :
Univ. of British Columbia, Vancouver
Abstract :
The difference in total subchannel bits loaded between the optimal water-filling subchannel power loading scheme and a simple equal power subchannel loading scheme for a multiuser OFDM system is studied. It is found that this difference is generally quite small and decreases with the number of users and the average subchannel signal-to-noise ratio.
Keywords :
OFDM modulation; multiuser channels; equal power subchannel loading; multiuser OFDM systems; optimal water-filling subchannel power loading scheme; subchannel signal-to-noise ratio; AWGN; Additive white noise; Bit rate; Downlink; Fading; Gaussian noise; Noise level; OFDM; Power system modeling; Signal to noise ratio; OFDMA; Power allocation; multiuser OFDM; water-filling;
Conference_Titel :
Communications, Computers and Signal Processing, 2007. PacRim 2007. IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1189-4
Electronic_ISBN :
1-4244-1190-4
DOI :
10.1109/PACRIM.2007.4313289
