Ala F. Khalifeh

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In this paper, we present a new policy for admitting voice over IP (VoIP) sessions over wireless networks. Our proposed policy receives the admission information advertised by the VoIP gateway on the wired network, and uses it to decide whether a new VoIP session can be admitted or not. The proposed policy can be easily integrated with the current call(More)
In this paper, we present an optimal UEP framework for transmitting packetized audio streams over MIMO wireless links. Our proposed framework aims at maximizing the expected end-to-end Segmented SNR of a received audio sequence. It reduces the packetization overhead of small audio frames while protecting audio streams against temporarily correlated bit(More)
Implementation of current real time services (of which one of the more important is Voice over IP) on the current Internet face many obstacles, among them the issue of routing. Quality of service (QoS) routing, attempts to provide real time services with the required guarantees to achieve acceptable performance. In this paper we study VoIP routing using the(More)
In this paper, we present an optimization framework for transmitting high quality audio sequences over error-prone wireless links. Our framework introduces apparatus and technique to optimally protect a stored audio sequence transmitted over a wireless link while considering the packetization overhead of audio frames. Utilizing rate compatible punctured RS(More)
Delivering high quality audio over the error prone wireless networks has to address many challenges. Some of these challenges include reducing the packetization overhead of small audio frames as well as protecting audio content against both bit errors introduced by wireless channels and packet erasures introduced by network buffering. We propose a(More)
Multi-core processors are gaining increasing importance in safety-relevant embedded real-time systems, where temporal guarantees must be ensured despite the sharing of on-chip resources such as processor cores and networks-on-a-chip. At the same time, many applications comprise workloads with different timing models including time-triggered and(More)
Although the mental capabilities of hearingimpaired people and hearing people are the same, reading and writing skills of those with hearing loss are much lower. Therefore, developing communications systems using sign languages becomes feasible and of interest. On the other hand, despite the fact that Arabic language is currently one of the most common(More)