Munira Ismail

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Heterogeneous networks provide more flexibility in term of service continuation and capacity to mobile users by having multi-layer networks of different wireless system and interfaces. However, in such network seamless vertical handoff across different networks becomes a challenging and crucial process. Conventional vertical handover decision algorithm uses(More)
Society of 3rd Generation Partnership Project (3GPP) is presently evolving Long Term Evolution Advanced (LTE-Advanced) as a development of the standard of LTE. This generation aims to produce specifications for a new radio-access technology geared to higher data rates, low latency and greater spectral efficiency. LTE-Advanced is an evolutionary step in the(More)
In this paper, a modified genetic algorithm named as dynamic characterized genetic algorithm (DCGA) is proposed. The new DCGA is then integrated into adaptive beam forming technique to reduce the power usage of adaptive antenna at WCDMA base station (node B) for serving instantaneous mobile needs. As contradict to conventional GA, DCGA is able to adapt(More)
Geographical routing protocols have been received serious attention due to their advantages as compared to conventional routing protocols. They require information about the physical position of nodes to be available. Commonly, each node determines its own position through the use of Global Positioning System (GPS) or some other type of positioning service.(More)
The need for Mobil Ad-Hoc Network (MANET) in environments where there is a lack of communication infrastructure is so important. In some cases, existing infrastructure cannot work well to transfer the data between members, so MANET must be designed as a solution. MANETs are constructed by an independent group of mobile nodes that relate to each other(More)
Weighting the coefficients vector is the principal factor influencing the detection performance of cognitive radio networks that uses soft-detection fusion (SDF) based cooperative spectrum sensing. Maximal ratio combining- (MRC-), equal gain combining- (EGC-) and continuous genetic algorithm- (CGA-) based SDF are well suited for optimizing the detection(More)
The main limits of the conventional single carrier modulation techniques are the restrictions imposed by the multipath channel, and the receiver complexity. On other hand the multicarrier techniques such as Multi-Carrier (MC) and Multi-Tone (MT) can provide high data rates at reasonable receiver complexities. Jamming on the other hand is of interest in some(More)
Without image compression, images data would become much larger and consequently retrieval of images will be slow, thus telemedicine would in many situations be impractical. But it is natural to raise the question of how much an image can be compressed and still preserve sufficient information for a given clinical application. Evaluation of the diagnostic(More)
Soft handover is used in WCDMA system because it could provides smoother transitions and enhanced the communication quality. The handover procedure is actually a kind of cell selection process. In this paper, downlink soft handover performance for different cell selection schemes namely, distance based, E/sub c//I/sub 0/ based and combination of both(More)
Heterogeneous type of users in modern mobile communication expect network service provider providing high-speed data, multimedia and voice services. However, capacity has always been an issue to any generation of mobile communication technologies as it is always inversely proportionate to QoS (quality of service) in nature. Hence, in order to increase the(More)