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Cellular communication systems need to support simultaneous transmission of multiple data rates over the same medium. A major aspect of design of cellular systems is simultaneous sharing of channel resources avoiding multiple access interference between users. For high quality communication this must be done without severe degradation in performance of the system. Orthogonal frequency division multiple...
In this paper, we present a dynamic method for resource assignment by implementing a cross-layer design for Multi-Carrier Code Division Multiple Access (MC-CDMA) systems that adapts user allocation to channel fluctuations. Our approach consists of prioritizing users according to their class of service (CoS), assigning them to the best subchannels based on channel estimates, and allowing redundancy...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
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