The University of Southampton
University of Southampton Institutional Repository

On the network performance of UTRA-like TDD/CDMA systems

On the network performance of UTRA-like TDD/CDMA systems
On the network performance of UTRA-like TDD/CDMA systems
In this contribution we characterise the capacity ofan adaptive modulation assisted, beam-steering aided TDD/CDMA system. In TDD/CDMA the mobiles suffer from interference inflicted by the other mobile stations (MSs) both in the reference cell the MS is roaming in (intracell interference) as well as due to those in the neighbouring cells (intercell interference). Furthermore, in contrast to FDD/CDMA, where the Base Stations (BSs) transmit in an orthogonal frequency band, in TDD.CDMA there is additional interference imposed by other Bss of the adjacent cells, since all time-slots can be used in both the uplink and downlink. In return for this disadvantage, TDD/CDMA guarantees the flexible utilization of all the available bandwidth, which meets the demand for the support of asymmetric uplink and downlink services, such as high data rate file download in mobile Internet services, etc. In wireless systems the link quality fluctuates due to either fading- and dispersion-induced channel impairments or as a consequence of the time-variant co-channel interference imposed by the teletraffic fluctuation due to the varying number of users supported. Due to these impairments conventional wireless systems often drop the call. By contrast, a particular advantage of employing adaptive modulation is that the transceiver is capable of automatically reconfiguring itself in a more error-resilient transmission mode, instead of dropping the call. This contribution studies the achievable network performance by simulation and compare it to that of the FDD/UTRA system.
606-610
Ni, S.
c17ef5a0-a786-46ea-8c68-2cddc3c6a9fc
Blogh, J.S.
ddd94f26-9ce5-45cd-801e-eed0531aa3c5
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Ni, S.
c17ef5a0-a786-46ea-8c68-2cddc3c6a9fc
Blogh, J.S.
ddd94f26-9ce5-45cd-801e-eed0531aa3c5
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Ni, S., Blogh, J.S. and Hanzo, L. (2003) On the network performance of UTRA-like TDD/CDMA systems. VTC'2003 (Spring), Jeju, Korea, Republic of. 22 - 25 Apr 2003. pp. 606-610 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this contribution we characterise the capacity ofan adaptive modulation assisted, beam-steering aided TDD/CDMA system. In TDD/CDMA the mobiles suffer from interference inflicted by the other mobile stations (MSs) both in the reference cell the MS is roaming in (intracell interference) as well as due to those in the neighbouring cells (intercell interference). Furthermore, in contrast to FDD/CDMA, where the Base Stations (BSs) transmit in an orthogonal frequency band, in TDD.CDMA there is additional interference imposed by other Bss of the adjacent cells, since all time-slots can be used in both the uplink and downlink. In return for this disadvantage, TDD/CDMA guarantees the flexible utilization of all the available bandwidth, which meets the demand for the support of asymmetric uplink and downlink services, such as high data rate file download in mobile Internet services, etc. In wireless systems the link quality fluctuates due to either fading- and dispersion-induced channel impairments or as a consequence of the time-variant co-channel interference imposed by the teletraffic fluctuation due to the varying number of users supported. Due to these impairments conventional wireless systems often drop the call. By contrast, a particular advantage of employing adaptive modulation is that the transceiver is capable of automatically reconfiguring itself in a more error-resilient transmission mode, instead of dropping the call. This contribution studies the achievable network performance by simulation and compare it to that of the FDD/UTRA system.

Text
sn-jsb-lh-vtc03spring.pdf - Other
Download (427kB)

More information

Published date: 2003
Venue - Dates: VTC'2003 (Spring), Jeju, Korea, Republic of, 2003-04-22 - 2003-04-25
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 258387
URI: http://eprints.soton.ac.uk/id/eprint/258387
PURE UUID: 9d669b5d-9734-4713-a95c-4843cce459af
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 24 Oct 2003
Last modified: 03 Dec 2019 02:06

Export record

Contributors

Author: S. Ni
Author: J.S. Blogh
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.

×