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
2005
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, IEE Savoy Place, London, United Kingdom.
07 - 09 Sep 2005.
.
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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Published date: 2005
Additional Information:
Event Dates: 7-9 September 2005
Venue - Dates:
IEE 3G and Beyond, IEE Savoy Place, London, United Kingdom, 2005-09-07 - 2005-09-09
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 261684
URI: http://eprints.soton.ac.uk/id/eprint/261684
PURE UUID: 51a28e5e-e45e-409a-8386-d8823316566d
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Date deposited: 15 Dec 2005
Last modified: 18 Mar 2024 02:33
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Contributors
Author:
H. Wei
Author:
L. Hanzo
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