NDLI: On the restriction of the coverage area of the interference TDMA co-channel slots in an overlaid CDMA and TDMA system

Content Provider	IEEE Xplore Digital Library
Author	Castaneda-Camacho, J. Lara-Rodriguez, D.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., CINVESTAV-IPN, Mexico City, Mexico (Castaneda-Camacho, J.; Lara-Rodriguez, D.)
Abstract	Theoretically the separation of CDMA and narrowband waveforms can be done through notch filters; however it has been demonstrated that the filtering techniques are not enough to eliminate the multi-cross interference problem. As a means of suppressing the interference that can not be eliminated by the use of filters this work presents a new proposal in which the reduction of the coverage area of the interference TDMA co-channel slots and the ordering in the use of this slots can significantly reduce the effect of the TDMA interference over the CDMA system. Thus, a TDMA sector is divided in two concentric zones, each one associated with a different set of slots. We divide the set of slots in two groups a general group C/sub G/ integrated by all non-co-channel slots and a restricted group C/sub R/ integrated by the co-channel slots. In the inner region the two groups of slots can be used but in the outer zone only the C/sub G/ group is used. Thus, with this strategy the effect of the co-channel interference is minimized. The performance evaluation of the overlaid system is derived analytically in terms of the Erlang capacity of the two systems for different scenarios, different concentric regions areas and for the reverse and forward links.
Starting Page	1970
Ending Page	1974
File Size	234666
Page Count	5
File Format	PDF
ISBN	0780388879
ISSN	15502252
DOI	10.1109/VETECS.2005.1543667
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-30
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time division multiple access Multiaccess communication Interference elimination Interference suppression Filters Narrowband Filtering Proposals Interchannel interference Performance analysis Erlang capacity notch filter overlaid system
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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