Unlike wired networks where packet losses are mainly caused by congestion, in wireless networks packet loss are primarily due to bit errors, arising from terrestrial obstructions and reflections of transmission signals. In order to achieve a better packet loss rate, comparable to its wired counterpart, some form of error correction mechanism to remove the errors and restore the original informa...

This paper analyzes the packet loss and delay performance of an arrayed-waveguide-grating-based (AWG) optical packet switch developed within the EPSRC-funded project WASPNET (wavelength switched packet network). Two node designs are proposed based on feedback and feed-forward strategies, using sharing among multiple wavelengths to assist in contention resolution. The feedback configuration allo...

Packet video will become a significant portion of emerging and future wireless/Internet traffic. However, network congestion and wireless channel error yields tremendous packet loss and degraded video quality. In this paper, we propose a new complete user datagram protocol (CUDP), which utilizes channel error information obtained from the physical and link layers to assist error recovery at the...

This paper explores packet loss recovery in client-server Automatic Speech Recognition (ASR) systems. A forward error correction (FEC) system is designed and tested over several channel loss models, at variable amounts of data acquisition delay. In experiments with simulated packet loss, the FEC system provides robust ASR performance which degrades gracefully as packet loss rates increase. Comp...

We propose a robust end-to-end loss differentiation scheme to identify the packet losses due to congestion for TCP connections over wired/wireless networks. We use the measured RTT values in determining whether the cause of packet loss is due to congestion over wired path or regular bit errors over wireless paths. The classification should be as accurate as possible to achieve high throughput a...

When the data is transferred over the network, a reliable end packet delivery is one of basic requirement of both user and network but there are many major causes that can result packet loss, such as Congestion over the network. Because of this there is requirement of some methodology that can reduce the packet loss and return reliable data transmission over the network. In this paper, the prop...

In this paper, packet loss probability performance in cell-based and packet-based switches with finite Input Queues (IQ) and iLPF scheduling algorithm are analysed. This algorithm has been proposed as a practical scheduling algorithm to achieve 100% throughput in cell-based switches. The scheduling algorithm is implemented in three cases: cellbased (CB-iLPF) switching, packet-based (PB-iLPF) sw...

This work compares the performance of three compensation methods for speech recognition in the presence of packet loss. Two methods, cubic interpolation and a novel maximum a posteriori (MAP) estimation, aim to restore the feature vector stream in the event of packet loss, while the third technique applies compensation in the decoding stage of recognition through missing feature theory. To impr...

In this paper, through an extensive analysis it is shown that VoIP traffic jitter exhibits self-similar and heavy-tail characteristics. From this analysis, we observed that α-stable distribution particularly gives the best goodness of fit; this fact has implications on the design of de-jitter buffer size. On the other hand, we investigate the packet loss effects on the VoIP jitter, and present ...