NDLI: Capacity unbalance between uplink and downlink in spectrally overlaid narrow-band and wide-band CDMA mobile systems

Content Provider	IEEE Xplore Digital Library
Author	Dongwoo Kim Dong Geun Jeong
Copyright Year	1967
Abstract	In this paper, we discuss capacity unbalance between uplink (mobile-to-base) and downlink (base-to-mobile) in future code division multiple access (CDMA) radio networks where both narrow-band and wide-band CDMA systems are coexisted. Since the two links are not operated in an identical condition, their capacities are unequal and either of the links determines the whole system capacity. The purpose of this paper is to examine which link limits the system capacity and what are the limiting factors. To facilitate the examination, "transmission capacity" and "connection capacity" are defined, and simplified formulas are presented to compute those capacities, respectively for uplink and downlink. Signal quality required for each link, effectiveness of power control, spatial distribution of mobile users and other-cell as well as same-cell user interference are usually determining the limiting link. Besides, the traffic unbalance between the links imposed by specific service applications and the network evolution scenarios are also shown to be very influencing factors.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	1086
Ending Page	1093
Page Count	8
File Size	173484
File Format	PDF
ISSN	00189545
Volume Number	49
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Downlink Narrowband Wideband Multiaccess communication Power control Interference Mobile communication Next generation networking Radio network Communication system traffic control
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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