This paper introduces a new concept called lossless aggregation for the transmission of video information. It is a scheme for the delivery of variable bit-rate (VBR) video streams from a video server to a group of users over a shared channel. No data are dropped at the source during the adaptation process that reshapes the VBR video traffic to conform to the channel bit-rate characteristics. Th...

In this thesis, we develop an subcarrier transmission suboptimal power allocation algorithm and an underlay subcarrier transmission optimal power allocation algorithm for the orthogonal frequency division multiplexing (OFDM)-based cognitive radio (CR) systems with different statistical interference constraints imposed by different primary users (PUs). Given the fact that the interference constr...

We propose a rate control algorithm based on Lagrangian optimization for video transmission over burst-error channels. In our rate control approach, the delay and channel capacity constraints in the video transmission are translated into rate constraints at the encoder. Given that a feedback channel is available, the rate control mechanism can dynamically adjust the video encoding rate to meet ...

This paper presents an optimal rate allocation scheme in joint sourcechannel coding (JSCC) for image transmission over CDMA networks. Our scheme first uses progressive joint source-channel codes [1] to generate operational transmission rate-distortion (TRD) functions of different multiple-access channels with different BERs. The Lagrange multiplier is then employed to set the optimal rate alloc...

A cost driven traffic assignment model is proposed to maximise the global benefit of transportation network users. A decentralised primal-dual time synchronised approach is used to solve for the optimal traffic rates subjecting the objective function to the bounds of the network tolerable costs. For a successful operation of the transportation network, the affordable upper bounds on the costs h...

We focus on energy-efficient resource allocation with quality of service (QoS) guarantee for orthogonal frequency division multiple access (OFDMA) based wireless cellular networks with decode-andforward (DF) relaying. The joint transmission mode selection, subcarrier allocation and power control for the energy efficiency (EE) maximization problem is formulated as a non-convex and combinatorial ...

The packet loss during transmission of load control commands can lead to regulation errors in the smart grid and increase cost utility agencies due purchase additional automatic generation (AGC) services. In this paper, a two-layer cooperative communication network between company relays is presented. rents relay assist with downlink improve reliability reduce data loss. Furthermore, uncertaint...