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LAS-CDMA using Various Time Domain Chip-Waveforms

LAS-CDMA using Various Time Domain Chip-Waveforms
LAS-CDMA using Various Time Domain Chip-Waveforms
LAS CDMA exhibits a significantly better performance than that of classic random code based DS-CDMA, when operating in a quasi-synchronous scenario. Classic frequency-domain raised cosine Nyquist filtering is known to show the best possible performance, but its complexity may be excessive in highchip-rate systems. Hence in these systems often low-complexity time-domain waveform shaping is considered. Motivated by this fact, the achievable performance of LAS-CDMA is investigated in conjunction with three different time-limited chipwaveforms, which exhibit an infinite bandwidth. The raised cosine time-domain waveform based DS-CDMA system is shown to achieve the best performance in the context of a strictly band-limited system, because its frequency-domain spectral side-lobes are relatively low.
273-277
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Wei, H.
c99f7f91-cfea-4292-8f88-6b184ff81446
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Wei, H. and Hanzo, L. (2005) LAS-CDMA using Various Time Domain Chip-Waveforms. IEE 3G and Beyond, United Kingdom. 07 - 09 Sep 2005. pp. 273-277 .

Record type: Conference or Workshop Item (Paper)

Abstract

LAS CDMA exhibits a significantly better performance than that of classic random code based DS-CDMA, when operating in a quasi-synchronous scenario. Classic frequency-domain raised cosine Nyquist filtering is known to show the best possible performance, but its complexity may be excessive in highchip-rate systems. Hence in these systems often low-complexity time-domain waveform shaping is considered. Motivated by this fact, the achievable performance of LAS-CDMA is investigated in conjunction with three different time-limited chipwaveforms, which exhibit an infinite bandwidth. The raised cosine time-domain waveform based DS-CDMA system is shown to achieve the best performance in the context of a strictly band-limited system, because its frequency-domain spectral side-lobes are relatively low.

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More information

Published date: 2005
Additional Information: Event Dates: 7-9 September 2005
Venue - Dates: IEE 3G and Beyond, United Kingdom, 2005-09-07 - 2005-09-09
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 261684
URI: https://eprints.soton.ac.uk/id/eprint/261684
PURE UUID: 51a28e5e-e45e-409a-8386-d8823316566d
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 15 Dec 2005
Last modified: 17 Jul 2019 01:21

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