The University of Southampton
University of Southampton Institutional Repository

Interference-Free Broadband Single- and Multi-Carrier DS-CDMA

Interference-Free Broadband Single- and Multi-Carrier DS-CDMA
Interference-Free Broadband Single- and Multi-Carrier DS-CDMA
The choice of the direct sequence spreading code in DS-CDMA predetermines the properties of the system. This contribution demonstrates that the family of codes exhibiting an interference-free window (IFW) outperforms classic spreading codes, provided that the interfering multi-user and multipath components arrive within this IFW, which may be ensured with the aid of quasi-synchronous adaptive timing advance control. It is demonstrated that the IFW duration may be extended with the advent of multicarrier DS-CDMA proportionately to the number of subcarriers. Hence, the resultant MC DS-CDMA system is capable of exhibiting nearsingle-user performance without employing a multi-user detector. A limitation of the system is that the number of spreading codes exhibiting a certain IFW is limited, although this problem may be mitigated with the aid of novel code design principles.
68-73
Hua, W.
231c29f0-f398-468c-bdd6-d1b61e8c7cab
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Hua, W.
231c29f0-f398-468c-bdd6-d1b61e8c7cab
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Hua, W., Yang, L-L. and Hanzo, L. (2005) Interference-Free Broadband Single- and Multi-Carrier DS-CDMA IEEE Communications Magazine, 43, (2), pp. 68-73.

Record type: Article

Abstract

The choice of the direct sequence spreading code in DS-CDMA predetermines the properties of the system. This contribution demonstrates that the family of codes exhibiting an interference-free window (IFW) outperforms classic spreading codes, provided that the interfering multi-user and multipath components arrive within this IFW, which may be ensured with the aid of quasi-synchronous adaptive timing advance control. It is demonstrated that the IFW duration may be extended with the advent of multicarrier DS-CDMA proportionately to the number of subcarriers. Hence, the resultant MC DS-CDMA system is capable of exhibiting nearsingle-user performance without employing a multi-user detector. A limitation of the system is that the number of spreading codes exhibiting a certain IFW is limited, although this problem may be mitigated with the aid of novel code design principles.

PDF hw-lly-lh-feb05-comms.pdf - Other
Download (607kB)

More information

Published date: February 2005
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 261653
URI: http://eprints.soton.ac.uk/id/eprint/261653
PURE UUID: 2a09b21c-745d-481d-8fd3-69ae6ec2a527
ORCID for L-L. Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 13 Dec 2005
Last modified: 18 Jul 2017 09:00

Export record

Contributors

Author: W. Hua
Author: L-L. Yang ORCID iD
Author: L. Hanzo ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×