NDLI: Performance of Wireless CDMA Networks Under Optimal Link-Layer Adaptation

Content Provider	IEEE Xplore Digital Library
Author	Muqattash, A. Krunz, M.
Copyright Year	2007
Description	Author affiliation: Olympus Commun. Technol. of America Inc., San Diego (Muqattash, A.)
Abstract	In this paper, we determine the maximum achievable "performance" of a wireless CDMA network that employs a conventional matched filter receiver and that operates under optimal link-layer adaptation where each user individually achieves the Shannon capacity. The derived bounds serve as benchmarks against which adaptive CDMA systems can be compared. We focus on two optimization criteria: minimizing the maximum service time and maximizing the sum of users rates (i.e., network throughput). We show that the problem of joint optimization of the transmission powers and rates so as to minimize the maximum service time can be formulated as a generalized geometric program (GGP), which can be transformed into a nonlinear convex problem and solved optimally and efficiently. When the goal is to maximize the sum of the rates, we show that the problem can be approximated as a GGP. Our derivation methodologies are applicable to both ad hoc and cellular networks. Numerical results are provided to show how well variable-rate, variable-power adaptation schemes perform relative to the performance bounds derived in this paper.
Starting Page	1703
Ending Page	1711
File Size	236228
Page Count	9
File Format	PDF
ISBN	1424410479
ISSN	0743166X
DOI	10.1109/INFCOM.2007.199
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Bit error rate Modulation coding Telecommunication traffic Matched filters Throughput Power control Communications Society Communications technology Adaptive systems
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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