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This paper proposes a no-reference video quality estimation model over burst loss wireless networks. The estimation model is an end-to-end, cross-layer framework which considers two parts as feature extraction and quality prediction. The first part considers content-aware parameters obtaining from rebuilt video sequences, transmission-aware parameters getting from network layer and encoding parameters...
In this paper, we propose a Transmission-aware Quality Metric (TQM) for real-time evaluation of video quality in lossy wireless network. There are two major contributions in our study. Firstly, in order to guarantee the real-time requirements, we considers the impacts of Packet Loss Rate (PLR) and Maximum Transmission Unit (MTU) which can be extracted directly from bit-stream, and build TQM by using...
According to nonlinear equation of path loss, cooperative communication based on relay technique can reduce the total power loss of a wireless network and average power consumption of terminals. At the same time, the cooperation between relay nodes result in more complexity in design and work, extra power consumption and some other problems. In an energy-constrained network, the effect on power loss...
Recently self-optimizing as a new characteristic in wireless networks attracts more and more attention. A game theoretic solution for load balancing by downlink power modification in 3GPP Long Term Evolution systems is presented in this paper. We formulate this problem as market equilibrium and use Fisher model with linear inequalities to find prices. Simulation results demonstrate proposed algorithm...
In cellular network, the deployment of the relay station can bring spatial diversity to increase link capacity and improve communication performance. In this paper, we consider an optimal power allocation scheme for the source and the relay to minimize the bit error rate (BER) at the destination under the power and outage constraint in cooperative relay system. Simulation results show that the BER...
In this paper a improving relay selection scheme based on the coalitional game is designed in the multi-user wireless networks. We firstly analyze the model of mutil-user cooperation networks. Then a brief introduction of the coalition concepts is given. In our strategy, source node and relay nodes constitute a coalition in order to increase the transmission rate and lower the BER of system. One coalition...
In this paper the game-theoretical is introduced into the multi-user power allocation in cooperative communication networks. We firstly divide the users into two groups that are users of real-time service and non-real-time service. We analyze the optimal power allocation for multi-service transmission; demonstrate the relationship between the two types of services. Then a bilevel programming model...
We consider the resource allocation problem in a resource-constrained system for OFDMA-based relay networks. In the resource-constrained system, our allocation strategy is based on economic aim to maximize the user satisfaction which means we can get the more profits. It is impossible to meet all the users' data rate requirement in the resource-constrained system. So we divide the users into two classes:...
In this paper, we analyze the symbol error rate (SER) performance of multi-relay decode-and-forward (DF) cooperative communications. In the analysis, we focus on the scenario in which the source, destination and relay terminals are each equipped with single antenna transceiver and receiver, and the communication channels are assumed to experience generalized Nakagami-m fading. We consider that all...
A framework of video transmissions over 3G wireless channels based on RCPC and FEC is proposed, which can cope with the bit error and packet loss occurred in transmission. The bit error model and packet loss model are used to estimate the bit error rate and packet loss rate, with which the RCPC code and FEC code is adjusted, and the datum are divided into the same length packet to be transmitted....
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