The paper examines the two basic Bandwidth Constraint models for MPLS networks, called Maximum Allocation Model and Russian Dolls Model, from the point of view of Quality of Service guarantees and introduces the results of performance evaluation of these models in a simulation scenario. We evaluated the influence of the Bandwidth Constraint models on the most important transmission parameters s...

 To guarantee quality of service (QoS), the requirements for video transmission such as delay and cell loss rate (CLR) are very stringent. These constraints are difficult to meet if high network utilization is desired. Dynamic bandwidth allocation is thus needed. Video traffic prediction can play an important role in dynamic bandwidth allocation and traffic management in high-speed networks. I...

MIMO communication using multiple transmit and multiple receive antennas is a prominent solution to reduce the effect of fading. Additionally spatial multiplexing has been adopted in MIMO to increase the data rate without increasing the transmit power. Due to easier implementation of higher data rate by increased subcarriers and its inherent fading resistance using frequency diversity, MC-CDMA ...

In this paper, we propose a layer-based integrated real-time scheduling algorithm in a single scalable stream and an online dynamic resource allocation algorithm among multiple concurrent users for scalable streaming media server over a network with packet loss and variable delay. The layer-based real-time scheduling algorithm efficiently schedules the packets in the buffer of the scalable stre...

" The cost of transmission facilities must be allocated to those within the transmission planning region that benefit from those facilities in a manner that is at least roughly commensurate with estimated benefits. " (FERC 2010, p. 91) Benefits include reliability, economic and public policy related impacts. Turning the principle into a workable policy is important as a support for restructured...

The Medium Access Control (MAC) of IEEE 802.11e defines a novel coordination function, namely, Hybrid Coordination Function (HCF), which allocates Transmission Opportunity (TXOP) to stations taking their QoS requirements into account. However, the reference TXOP allocation scheme of HCF Controlled Channel Access (HCCA), a contention-free channel access function of HCF, is only suitable for cons...

The rapid increasing demands of multi-media applications have busted the improvement of video transmission. By the increase of multimedia transmission, quality of experience (QoE) has become the hot topic of the wireless networks’ research. This paper proposes a QoE-aware resource allocation algorithm in MIMO-OFDM Networks. The power allocation estimation is formulated to maximize according to ...

Abstract:Macrodiversity is an effective means to overcome large-scale fading effects. Much of previous work focused on its benefits to the reverse link in CDMA systems. However, its effect on the forward link is less well understood. In this paper, we analyze the CDMA forward-link capacity with macrodiversity and the results show that macrodiversity causes forward-link capacity loss whatever po...