NDLI: Interference-based capacity analysis in CDMA cellular systems

Content Provider	IEEE Xplore Digital Library
Author	Joonhwan Kim Young-June Choi Saewoong Bahk
Copyright Year	2003
Description	Author affiliation: GCT Semicond., Seoul, South Korea (Joonhwan Kim)
Abstract	In multiple cellular CDMA systems, the channel capacity heavily depends upon the interference caused by the signal power of the other users. In this paper, we exactly quantify the cell capacity by focusing on not only the number of users but also the location of active users. To inspect the effect of multicell CDMA environments, we model three 1/6 cells divided by 60/spl deg/ sector antennas and analyzed the increased interference when a user is added to the unit of cell. Based on the capacity analysis, we propose a new call admission control scheme that uses the location information of users. Whenever a new user arrives, our scheme checks whether the admittance of that user can occur within the cell capacity. Our scheme allows more users to enter the network if they generate less interference. Therefore it has the effect of increased system capacity without sacrificing the QoS of all the other active users. Through simulations we show that the performance is improved by 10 to 20% in terms of the number of active users that can be accommodated.
Starting Page	1412
Ending Page	1417
File Size	355203
Page Count	6
File Format	PDF
ISBN	0780377001
ISSN	15253511
DOI	10.1109/WCNC.2003.1200592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Multiaccess communication Frequency division multiaccess Time division multiple access Call admission control Base stations Power control Noise level Computer science Channel capacity
Content Type	Text
Resource Type	Article

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