LAS-CDMA using Various Time Domain Chip-Waveforms


Wei, H. and Hanzo, L. (2005) LAS-CDMA using Various Time Domain Chip-Waveforms. In, IEE 3G and Beyond, IEE Savoy Place, London, UK, 07 - 09 Sep 2005. , 273-277.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 7-9 September 2005
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 261684
Date Deposited: 15 Dec 2005
Last Modified: 27 Mar 2014 20:04
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/261684

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