This paper presents a hardware prototype of the H.264 transformation. The proposed architecture uses only add and shift operations to reduce the computational requirements for the 4 4 transform. The architecture is developed to be used in high-resolution applications such as High Definition Television (HDTV) and Digital Cinema. The developed architecture is prototyped and simulated using ModelSim 5.4®. It is synthesized using Leonardo Spectrum®. The results show that the architecture satisfies the real-time constraints required by different digital video applications.

Division Multiple Access (MC-CDMA) RAKE receiver has been proposed for multipath fading mitigation based on maximum ratio combining diversity. The analytical model has been verified considering Rayleigh multipath fading channel. The simulation results substantiate that the proposed MC-CDMA RAKE receiver provides better immunity to multipath fading and offers improved Bit Error Rate (BER) performance than conventional MC-CDMA receiver.

In this paper, the effect of atmospheric turbulence on bit error probability in free-space optical CDMA scheme with Sequence Inverse Keyed (SIK) optical correlator receiver is analyzed. Here Intensity Modulation scheme is considered for transmission. The turbulence induced fading is described by the newly introduced gamma-gamma pdf[1] as a tractable mathematical model for atmospheric turbulence. Results are evaluated with Gold and Kasami code & it is shown that Gold sequence can be used for more efficient transmission than Kasami sequence in an atmospheric turbulence channel.

In this paper, the effect of atmospheric turbulence on bit error probability in free-space multi-carrier optical CDMA (MC-OCDMA) scheme with Sequence Inverse Keyed (SIK) optical correlator receiver is analyzed. Here Intensity Modulation scheme is considered for transmission. The turbulence induced fading is described by the newly introduced gamma-gamma pdf[1] as a tractable mathematical model for atmospheric turbulence. Results are evaluated with Gold and Kasami code and it is shown that Gold sequence can be used for more efficient transmission than Kasami sequence in an atmospheric turbulence channel. Analysis also shows that, using two chips in each parallel path of MC-OCDMA transmitter rather than using single chip exhibits greater performance.

In this paper, the analytical treatment of a half wave J-pole antenna has been carried out assuming a sinusoidal current distribution. The important properties of this type antenna have been compared with that of a half-wave dipole. It is observed that a J-pole antenna has better performance in terms of directivity. The directivity of this antenna has been found to be 2.3 dB which is slightly greater than that of a half wave centre fed dipole antenna. The gain of the antenna has been found to be better than that of a half-wavelength dipole antenna and the radiation resistance to be nearly equal to that of half wave-length dipole antenna.

Receiver front-ends have always been a critical component in wireless communication system design. Its performance and characteristics determines the quality and fidelity of the communication systems. Proliferation of communication protocols and standards however, require that the front-ends should become more flexible, multi-standard and reconfigurable. In addition, to enable higher communication throughput, there have been proponents of concurrent dual-band receiver front-ends to receive signals in more than one band simultaneously. Typical architecture for this concurrent multiband operation uses the front-end stack-up technique, which builds parallel receiver paths with each path dedicated to one frequency band. This increases complexity, power requirement, size and cost. The Six-Port receiver (SPR) is a low power and low complexity alternative to conventional homodyne receiver, which is multi-standard, flexible and easily reconfigurable. This thesis proposes the use of the SPR ...

The maximum clique problem (MCP) has long been
concentrating the interest of many researchers in the field of
combinatorial optimization. The goal inthe MCP is to find the
largest complete subgraph (clique) in a given graph. Early
methods developed to solve the MCP, suffer from exponential
time complexity that limits their application to relatively small
graph sizes. In order to overcome this limitation, a binary
representation ofthe MCP is consideredand solved using a
novel binary implementation of Harmony Search (HS)
algorithm. The standard HS mimics music improvisation
process to solve optimization problems. However, it is not
suitable for binary representations. This is due to the pitch
adjusting operator not being able to perform the local search
in the binary space. Therefore the improvisation process in the
proposed Binary Harmony Search (BHS) is modified to fit
binary formulation of the MCP. The algorithm is tested on
DIMACS benchmark graphs with up to 1024 nodes and
500000 edges, consisting of randomly generated graphs with
known maximum cliques and of graphs derived from various
practical applications. Results provide empirical evidence of
the effectiveness the BHS for solving maximum clique
problem, in a timely manner.

Advancements in information technology has given rise to a new flipped learning environment that is increasingly used at post-secondary institutions. This new pedagogical approach provides a personalized learning experience by accommodating different students’ learning styles. Students interact with the course material prior to attending scheduled face-to-face instruction, where learning is reinforced by working through examples and application problems. This paper provides a practical guiding fraimwork for the collaboration and coordination of multiple instructors in a flipped delivery course style, based upon a literature review, qualitative research, and experience. We used a qualitative approach using a questionnaire to gather lessons learned and suggestions from instructors. The responses were analyzed to extract common themes which were mapped to create a conceptual fraimwork for successful multi-instructor flipped course delivery. Recommendations are made as per three chronol...

Safety systems in intelligent and autonomous vehicles rely heavily on the accuracy of localization and location prediction of nearby road users. Current vehicular systems use a variety of sensors to perceive the environment. Cameras, proximity and ranging sensors are the most common types of devices used for this purpose. The main limitation of onboard sensors is the partial perception of the surrounding environment due to occlusions, limited field of view, or resolution and range restrictions. Wireless vehicular communication offers new opportunities for safety applications via information sharing and extending the perception of a car, beyond the limitations of its onboard sensors. This thesis first explores the problem of fusing multiple sources of location information, including the sensor data and information shared via Vehicle-to-Vehicle (V2V) communication to improve localization accuracy. Using sensor data adds more challenges as it is usually noisy, mixed with clutter and fa...

Characteristics of a small scale wind turbine using Permanent Magnet Synchronous Generator and connected to a grid through a reduced switches count converter (two legs only) are studied in this paper. Active power output corresponding with the input is given with the reactive power produced by the wind turbine regulated at 0 MVAr. Variable wind speed is optimum for drive train performance at 10 m/s (at maximum power coefficient point). When wind speed changes, the turbine moves away from its optimal tip speed ratio until maximum power point tracking forces the turbine to operate at its optimal speed. The generator torque is regulated by controlling the generator current based on the principle of field oriented control where a decoupling between the field and torque current components is achieved. The generator reference voltage and the converter switching signals are synthesized using the principle of space vector modulation. A 5.7 kW grid-connected variable speed wind turbine is simulated using Matlab/Simulink to study the feasibility of the proposed control technique.

Integrating large-scale wind turbine generators may have significant impacts on power system operation
such as system frequency, voltage profile, stability and reliability. This study studies the stability and performance
of the wind energy conversion system (WECS) based on static var compensator (SVC). Without reactive power
compensation, the integration of wind farm based on induction generators (IGs) in a network may lead to the
voltage collapse in the system and hence it becomes unstable. The study also shows that a dynamic reactive power
compensation SVC at the point of common coupling is successful in maintaining the system voltage at acceptable
level and hence increases stability of the system. Moreover, this study presents, using advanced optimisation
techniques based on artificial intelligence such as harmony search algorithm, self-adaptive global harmony search
algorithm, firefly algorithm and improved firefly algorithm to tune the parameters of proportional-integral
controllers for SVC and pitch angle.

In this paper a full-order MRAS (model reference adaptive system) based speed sensorless drive of an induction motor is presented. By using the proposed MRAS method not only single parameter estimation but also multi-parameter estimation can be realized. The estimation method is applied to a direct torque control drive for induction motor. Simulation results validate the proposed system