A fired channel assignment algorithm capable of allocating channels to variable size rectangular-shaped microcellular mobile and portable radio communications systenrc is presented. This geometry conforms well with the propagation conditions typical of low antenna-height bnre stations to be used in urban microcellular environments. Given the total number of available channels, the number of channels p e r channel set, blocking probability, trajJic requirements of each cell. cochannel and adjacent channel separation requirements, and the nuniber of TDMA time slots per channel f o r a service area of arbitrary shape and size, the algorithm allocates channel sets to each cell, calculates total capacity, and reports the number of used and unused channels and channel sets. Results of channel assignment for a 144-celI system under diversified sets of conditions are presented and the sensitivity of system capacity to the above mentioned parameters are reported.
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