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Power-Imbalanced Low-Density Signatures (LDS) From Eisenstein Numbers

Liu, Zilong, Xiao, Pei and Mheich, Zeina (2019) Power-Imbalanced Low-Density Signatures (LDS) From Eisenstein Numbers In: 16th IEEE Asia Pacific Wireless Communications Symposium 2019 (APWCS 2019), 28-30 Aug 2019, Singapore University of Technology and Design, Singapore.

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Abstract

As a special case of sparse code multiple access (SCMA), low-density signatures based code-division multiple access (LDS-CDMA) was widely believed to have worse error rate performance compared to SCMA. With the aid of Eisenstein numbers, we present a novel class of LDS which can achieve error rate performances comparable to that of SCMA in Rayleigh fading channels and better performances in Gaussian channels. This is achieved by designing power-imbalanced LDS such that variation of user powers can be seen both in every chip window and the entire sequence window. As LDS-CDMA is more flexible in terms of its backwards compatibility, our proposed LDS are a promising sequence candidate for dynamic machine-type networks serving a wide range of communication devices.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Liu, Zilongzilong.liu@surrey.ac.uk
Xiao, PeiP.Xiao@surrey.ac.uk
Mheich, Zeinaz.mheich@surrey.ac.uk
Date : 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Grant Title : New Air Interface Techniques for Future Massive Machine Communications
Copyright Disclaimer : © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Related URLs :
Depositing User : Clive Harris
Date Deposited : 23 Jul 2019 08:12
Last Modified : 28 Aug 2019 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/852292

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