Bachelor Projects Supervision Spring 2013

 

1.      Mobile Application: A real-time vehicle guidance system (2 to 3 students) [Sponsored by Etisalat]

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2.      ON/OFF base station switching strategies for green cellular networks (1 to 2 students) [Sponsored by Etisalat]

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3.      Indoor Coverage Planning for LTE [Sponsored by Vodafone and ITIDA]

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4.      Ray Tracing for Propagation Prediction for Indoor Wireless Communications [Sponsored by Vodafone and ITIDA]

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5.      Indoor Performance Planning for LTE [Sponsored by Vodafone and ITIDA]

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Research Interests

 

Power Saving Receivers Design for DVB-H Systems

A receiver-based adaptive coding scheme for DVB-H could adapt the coding rate in response to wireless channel dynamics. This could contribute significantly to a crucial challenge of handheld devices to economize on battery/power consumption. In this research, an energy-efficient implementation for an adaptive coding-enabled receiver suitable for DVB-H systems is investigated. The key element of such receiver is re-configurability supporting multiple rates of a rate-compatible punctured convolutional code.

 

Power Management and Routing in Sensor Networks

With continuous advancement in the cost/size of various sensor technologies, the notion of sensor networks has become a key component of various future applications to share and possibly process sensor information collected from diversely located sensors at some central point. For example, sensor networks will become an integral component in diverse venues such as hospitals, windmills, cars, and even cell phones. The applications could range from environmental studies to the control and management of different systems. One of the key aspects of sensor networks is related to their lifetime. Accordingly, the issue of power management is of the most significant importance in the field of sensor networks. Research interests in this domain include:

·         Energy-efficient implementation of error control coding in wireless sensor networks

·        Distributed source coding in wireless sensor networks

·        Energy-efficient MAC protocols in wireless sensor networks

Unequal Error Protection for Scalable Video Coding Based on Wavelet

Scalable Video Coding (SVC) has been widely used to address different users with different video scalability. There are three main types of scalability; temporal scalability, spatial scalability and quality scalability.  A scalable bit-stream has to be organized in such a way that accessing certain content data from the compressed bit stream can be done, at different resolution, without having to decode the full bit-stream. This decreases significantly the decoding complexity at lower resolution which is done by removing parts of the stream responsible for high resolution prior decoding. A scalable video stream is formed of two types of streams, the base layer stream containing the essential basic data required to reconstruct the most scalable layer of the video and a number of enhancement layers that are used for the reconstruction of higher scalable levels of the video. Wavelets have been excessively used in still image coding and compression due to their outstanding rate-distortion performance which led to the idea of using wavelet for video coding. This research is interested in using unequal error protection using HQAM and RCPC for different video qualities within a scalable video coding framework based on wavelets.

 

Network Dimensioning/Planning of LTE Networks

Outdoor dimensioning is a critical component in the planning of cellular communication networks. LTE has adopted Orthogonal Frequency Division Multiplexing (OFDM) as its access technology. In OFDM the wideband bandwidth is subdivided into orthogonal sub-carriers. Each subcarrier might be viewed as an independent communication channel that could support different modulation/coding scheme based on the channel profile of the user owning such channel. The flexibility in assigning rates which corresponds to SINR requirements render the issue of dimensioning in LTE to become complicated when compared to its counterpart in the case of 3G.

While CDMA does deploy a reuse factor one due to the use of spreading codes, OFDM cannot do this. Accordingly reuse factors of three and seven are typically reported in the literature. With the continuous need for bandwidth the OFDM domain has been working on devising fractional reuse to augment the available capacity. In fractional reuse the edge users are assigned a different reuse factor form those users assigned to the middle of the cell.  The concept of fractional reuse further compounds the traditional dimensioning process where the dimensioning should design internal and external radii in accordance with capacity of traffic within the corresponding region.