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Considering the quality-of-service (QoS), power allocation is a critical importance issue in realizing multi-hop relay systems. In this paper considering the QoS Constraints in term of BER or instantaneous SNR, an optimal power allocation scheme that minimized the total power consumption in an amplify-and-forward (AF) multi-hop multi-branch transmission system is proposed. Considering an asymptotic...
We present, for the first time, a formal model for the general problem of uplink scheduling of a set of packets with various QoS classes and soft or hard deadlines. Our goal is to maximize the value of packets to be sent in uplink such that the expectations from the system are guaranteed. We use our general model and the properties of the application to derive an algorithm which has two highly favorable...
We present, for the first time, a formal model for the general problem of uplink scheduling of a set of packets with various QoS classes and soft or hard deadlines. Our goal is to maximize the number of packets to be sent in uplink such that the expectations from the system are guaranteed. We use our general model and the properties of the application to derive an algorithm which has two highly favorable...
This paper focuses on a recent application of real-time scheduling in wireless communications industry; i.e., uplink scheduling for WiMAX systems. We address the problem of maximizing the number of packets to be sent in uplink such that the expectations from the system are guaranteed. In this work, we present, for the first time, a formal model for the general problem. Then, we use the properties...
We address a recent application of realtime scheduling in wireless communication industry; namely, the uplink scheduling problem for WiMAX systems. More specially, we have worked on the problem of maximizing the number of data packets to be sent through an uplink subframe such that the expectations from the system are guaranteed. We argue that this problem is NP-hard. Thus far, only a number of heuristic...
In this paper we introduce an effective bandwidth- based Call Admission Control (CAC) with adaptive modulation technique to manage the traffic in a wireless IP-based network. Since the next generation of communication networks will carry different classes of traffic, e.g., voice, video, fax, data and multimedia, over the same network and these different classes of traffic usually require different...
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