Summary: | The number of cellular subscribers world-wide is expected to grow rapidly in the next
decade. Since the radio spectrum available for a cellular system is limited, designing an effective
channel assignment scheme is of great importance. In this thesis, a new channel assignment
scheme, distributed MAXMIN with interference information (DMAXMIN_WI), is proposed. The
new scheme is developed from the centralized MAXMIN scheme. By sharing interference
information with neighboring cells, the host cell (the cell in which a channel needs to be assigned)
performs a channel assignment which attempts to minimize the effect on other co-channel users.
The performance of DMAXMIN_WI is compared with those of existing channel assignment
schemes using computer simulation. Intra-cell reassignments are carried out in order to reduce the
call dropping probability. Results show that DMAXMIN_WI has the best overall performance
and requires few intra-cell reassignments.
The effectiveness of a performance analysis technique, the Snapshot Analysis, and its
relationship to traditional analysis are studied. A new approach to performance analysis, the Slot
Viewpoint Analysis, is proposed. This new approach is used to show that Snapshot Analysis
cannot replace traditional analysis.
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