A DS-CDMA Cellular System Using Band Division and Channel Segregation Distributed Channel Allocation

Suguru SUGAWARA  Eisuke KUDOH  Fumiyuki ADACHI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B   No.4   pp.904-909
Publication Date: 2007/04/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.4.904
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
channel assignment,  channel segregation,  DS-CDMA,  link capacity,  

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Summary: 
In DS-CDMA cellular communications systems, the single frequency reuse can be utilized. Since large other-cell interference is produced, the well known soft handover or site diversity must be used. If the single frequency reuse is not utilized to avoid the other-cell interference, we will face the frequency allocation problem, similar to FDMA systems. In this paper, a DS-CDMA cellular system using band division is proposed. The available wide frequency band is divided into several narrow frequency bands and the different frequency bands are allocated to adjacent cells so as to avoid the large other-cell interference. For the frequency allocation, the channel segregation distributed channel allocation (CS-DCA) algorithm is applied. The link capacity is evaluated by computer simulation.