Multicarrier multiple access is sum-rate optimal for block transmissions over circulant ISI channels

Authors:
Shuichi Ohno;G. B. Giannakis;Zhi-Quan Luo
Affiliations:
Dept. of Artificial Complex Syst. Eng., Hiroshima Univ., Higashi-Hiroshima, Japan;-;-
Venue:
IEEE Journal on Selected Areas in Communications
Year:
2006

Citing 0
Cited 1

Design collaborative systems with multiple AF-relays for asynchronous frequency-selective fading channels

IEEE Transactions on Communications

Quantified Score

Hi-index	0.07

Visualization

Abstract

Multicarrier multiple access with channel knowledge and prescribed power at the transmitters is shown to maximize the sum-rate for circulant intersymbol-interference (ISI) channels. A low-complexity iterative algorithm is derived for optimal subcarrier allocation to multiple users, while power is loaded per user by specializing an existing iterative algorithm to circulant ISI channels. It is analytically shown that each subcarrier should be allocated to the user having relatively better subcarrier gain and that different users may share certain subcarriers.