Mohamed A. Aboul-Dahab

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This paper discusses the energy saving control problem in ad hoc wireless networks. The problem can be formulated as a number of randomly placed nodes in a plane with a given area and a required traffic load constrained by end to end delay bounds. We try to find an optimized routing path that can meet the Quality of Service requirements and minimizing the(More)
Power conservation for maximizing the lifetime of thelimited battery powered ad hoc networks are one of the most important factors in a network design. Transmitting at high power may assure network connectivity but sacrifice network lifetime and increases the interference as well. Meanwhile transmitting at lower power reduces the interference on the expense(More)
Power conservation for maximizing the lifetime of the limited battery powered ad hoc networks are one of the most important factors in a network design. Transmitting at high power may assure the network connectivity, but sacrifices its lifetime and increases the interference as well. Meanwhile transmitting at lower power reduces the interference at the(More)
This paper introduces a new pilot pattern design for channel estimation in WiMAX. Current WiMAX systems use a subcarrier allocation technique known as Uplink Partial Usage of Subcarriers (UL-PUSC). It is based on tile structure that consists of 4 subcarriers by 3 OFDMA symbols with 4 pilots in the corners to aid the channel estimation process. We propose a(More)
Power conservation for maximizing the lifetime of the limited battery powered ad hoc networks are one of the most important factors in a network design. Transmitting at high power may assure network connectivity but sacrifice network lifetime and increases the interference as well. Meanwhile transmitting at lower power reduces the interference on the(More)
This paper discusses the energy saving control problem in ad hoc wireless networks. The problem inputs are given as a set of nodes in a plane, end-to-end traffic demands, and delay bounds between node pairs. The problem is to find an optimized routing that can meet the Quality of Service requirements and the minimized total consumed power of nodes. In(More)
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