Authors: Jian Dang Zaichen Zhang Liang Wu
Publish Date: 2016/07/20
Volume: 91, Issue: 2, Pages: 847-860
Abstract
With the increasing needs of high data rate communication spectrally more efficient communication schemes are desired In multiuser communication context conventional orthogonal multiple access OMA schemes suffer from spectral efficiency loss by fundamental information theoretics Nonorthogonal multiple access NOMA schemes are more appropriate In this paper we propose a new NOMA system based on generalized energy spreading transform GEST We give the basic system structure and compare it with some existing NOMA systems It is interesting that the proposed GESTMA can be viewed as a generalization of several existing NOMA systems Analysis and simulations show that GESTMA is more flexible than current NOMA systems and is capable of achieving the potential diversity gain without sacrificing the spectral efficiency Those properties make it a strong candidate for the next generation mobile communication systems
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