Capacity enhancement for CDMA systems through adaptive cell sectorization

Cem U. Saraydar, Aylin Yener

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

We consider the problem of adaptive cell sectorization in a CDMA system. Specifically, given the user distribution in a cell, we investigate the two problems of how to appropriately sectorize the cell such that we minimize the total received power and the total transmit power spent by all the users, in both cases, while giving each user acceptable quality of service. The optimum arrangement equalizes the number of users in each sector for the received power optimization problem. The transmit power optimization can be formulated as a graph partitioning problem which can be solved in polynomial time. In both cases, the optimum arrangement can be quite different from uniform cell sectorization (equal partitioning) under non-uniform traffic conditions. We observe that, with adaptive sectorization, received and transmit power savings are achieved and the number of users served by the system (system capacity) is increased compared to uniform sectorization of the cell.

Original languageEnglish (US)
Title of host publication1999 IEEE Wireless Communications and Networking Conference, WCNC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1139-1143
Number of pages5
ISBN (Electronic)0780356683
DOIs
StatePublished - Jan 1 1999
Event1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999 - New Orleans, United States
Duration: Sep 21 1999Sep 24 1999

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume3
ISSN (Print)1525-3511

Other

Other1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999
CountryUnited States
CityNew Orleans
Period9/21/999/24/99

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Saraydar, C. U., & Yener, A. (1999). Capacity enhancement for CDMA systems through adaptive cell sectorization. In 1999 IEEE Wireless Communications and Networking Conference, WCNC (pp. 1139-1143). [796879] (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 3). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.1999.796879