Majid Ghaderi

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The capacity gain of network coding has been extensively studied in wired and wireless networks. Recently, it has been shown that network coding improves network reliability by reducing the number of packet retransmissions in lossy networks. However, the extent of the reliability benefit of network coding is not known. This paper quantifies the reliability(More)
Call admission control is a key element in the provision of guaranteed quality of service in wireless networks. The design of call admission control algorithms for mobile cellular networks is especially challenging given the limited and highly variable resources, and the mobility of users encountered in such networks. This article provides a survey of(More)
This paper addresses bandwidth allocation for an integrated voice/data broadband mobile wireless network. Specifically, we propose a new admission control scheme called EFGC, which is an extension of the well-known fractional guard channel scheme proposed for cellular networks supporting voice traffic. The main idea is to use two acceptance ratios, one for(More)
Ferry-based networks provide a means of bringing extremely low-cost Internet access to remote rural areas, where conventional access technologies, e.g., dial-up, DSL and CDMA, are currently economically infeasible. We present an architecture for ferry-based networks and identify downlink scheduling as a difficult open problem. We argue that opportunistic(More)
This article presents an overview of the most significant changes in wireless data traffic and its main driving forces throughout the past decade (1998-2008). The main axes of change are discussed: wireless technology, user population, and applications. Evolution of wireless technology realized a 200-fold increase in data rate, and facilitated a continuous(More)
Following the success of short messaging service (SMS), multimedia messaging service (MMS) is emerging as a natural but revolutionary successor to short messaging. MMS allows personalized multimedia messages containing content such as images, audio, text and video to be created and transferred between MMS-capable phones and other devices. By using IP and(More)
Protocol-independent redundant traffic elimination (RTE) is a method to detect and remove redundant chunks of data from network-layer packets by using caching at both ends of a network link or path. In this paper, we propose a set of techniques to improve the effectiveness of packet-level RTE. In particular, we consider two bypass techniques, with one based(More)
This paper considers the problem of finding minimum-energy cooperative routes in a wireless network with variable wireless channels. We assume that each node in the network is equipped with a single omnidirectional antenna and, motivated by the large body of physical layer research indicating its potential utility, that multiple nodes are able to coordinate(More)