A spectrally overlaid flexible bandwidth utilisation scheme for cellular CDMA systems Online publication date: Wed, 06-Dec-2006
by G. Sivaradje, P. Dananjayan
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 2, No. 1/2, 2007
Abstract: Future wireless communication systems need to utilise bandwidth with improved efficiency in order to manage the evergrowing traffic conditions. The capacity of a link can be improved by spectrally overlaying narrowband subsystems over a single wideband system. A micro/macro cellular CDMA overlay system was considered in the present study. Important issues such as the interference, the desired user signal power in the reverse link, the system parameters affecting the reverse link capacity, the spectral overlay ratio and distance between micro and macrocells base stations were analysed. The relative power used, the interference obtained due to the cousers and maximum total throughput in a particular cell have been evaluated. A real time simulation of a CDMA system in a cellular environment consisting of several narrowbands overlaid on a wideband system clearly shows that capacity enhancement can be achieved due to the overlay of narrowband and wideband CDMA systems.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook