Mobile computers use wireless channels to communicate with other computers. Ef-cient channel allocation is at the heart of the design of an eecient mobile computing system. The nite number of channels should be eeciently allocated to maximize throughput and avoid co-channel interference. Temporal variations in channel demand require channel allocation to adapt dynamically to the changing demand...

Mobile computers use wireless channels to communicate with other computers. Ef-cient channel allocation is at the heart of an eecient mobile computing system. The nite number of channels should be eeciently allocated to maximize throughput and to avoid co-channel interference. Temporal variations in channel demand (load) require channel allocation to adapt dynamically to the changing demand. Th...

Progressive image transmission is difficult in the presence of a noisy channel, mainly due to the propagation of errors during the decoding of a progressive bitstream. Excellent results for this problem are made possible through combined source-channel coding – a method that matches the channel code to the source operational rate-distortion as well as channel conditions. This paper focuses on t...

This paper studies how to exploit the predicted information to maximize energy efficiency (EE) of a system supporting hybrid services. To obtain an EE upper bound of predictive resource allocation, we jointly optimize resource allocation for video on-demand (VoD) and real-time (RT) services to maximize EE by exploiting perfect future large-scale channel gains. We find that the EE-optimal predic...

This paper proposes various power allocation algorithms for nonregenerative cooperative multi-input multi-output system, which have been optimised based on mutual information for different levels of channel state information (CSI) available at the base station (BS) and at the relay station (RS). Four different CSI settings have been studied in this paper : CSI of both the first and second hop c...

This paper discusses several channel allocation methods for data dissemination in mobile computing systems. We suggest that the broadcast and on-demand channels have different access performance under different system parameters and that a mobile cell should use a combination of both to obtain optimal access time for a given workload and system parameters. We study the data access efficiency of...

Dense deployments of hybridWLANs result in high levels of interference and low end-user throughput. Many frequency allocation mechanisms for WLANs have been proposed by a large body of previous studies. However, none of these mechanisms considers the load that is carried by APs in terms of channel conditions, number of affiliated users as well as communication-load, in conjunction. In this pape...

Low-Earth Orbit (LEO) satellite systems are intended to have an important part of the future generation of mobile telecommunication systems. They aim to provide di erent services to various populations of users. Each class of users requires a certain Quality of Service (QoS) and thus a given part of the shared channel resource. In this paper, LEO satellite systems based on an earthxed cell conc...