| Summary: | As the demand for cellular communication services is increasing rapidly, it is important to
achieve an efficient utilization of the allocated radio spectrum. To this end, a channel assignment
scheme that is consistent with the objectives of increasing capacity and minimizing interference is
required. In this thesis, a dynamic channel assignment (DCA) scheme with channel borrowing
and re-assignment is proposed. With the channel borrowing and re-assigning strategy, a cell
which has no channel available may borrow a channel from an available channel set of its
neighboring cells. The performance of the proposed DCA scheme is studied through computer
simulations in terms of blocking probabilities and handoff activities. A comparison of blocking
probabilities between the proposed scheme and some existing channel assignment schemes is
made. In the no handoff case, the proposed scheme can significantly improve the blocking
probability of the cells that have a complete set of interfering cells. In the case with handoff, the
adaptability of the channel borrowing and re-assigning strategy leads to a significant improvement
in handoff blocking probability for both uniform and non-uniform traffic distributions. The
proposed scheme also generally has a lower overall blocking probability.
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