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Understanding LTE with MATLAB
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A Shifting Strategy for Dynamic Channel Assignment
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In this work, a new algorithm for dynamic channel assignment (DCA) in cellular networks is pre- sented. The ability to adaptively distribute channel resources in response to heterogeneous demand and interference, while maintaining spectral eciency, are important considerations for multimedia wireless transmission. DCA techniques may be broadly classi ed as graph-theoretic, mathematical programming and meta-heuristic search, or some combination thereof. Mathematical programming approaches to DCA [1] consider the minimization of a cost function such as the allocated bandwidth under the constraint that channel reuse takes place above speci ed interference levels. Many DCA problems are NP-hard. The engineering approaches have been based on polling available channels and selecting the rst channel that can transmit above the interference threshold or based on search and borrow of unused channels from neighboring cells [2]. Although various algor
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