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A new algorithm has been formulated based on the basic animal migration optimization (AMO) algorithm. During the course of this proposed work it was revealed for the first time that AMO algorithm is a true replica of DEGL algorithm and when mathematical analysis was carried out the similarities were brought to notice which was till date not reported. Further during the investigation it was also witnessed...
This paper presents a pattern synthesis method based on two powerful tools of the Evolutionary computing i.e Differential Evolution, Invasive weed optimization and Firefly technique, to provide a significant side lobe reduction. The Antenna elements are embedded on a hemispherical array that leads to one of the geometry of a conformal shape. The array elements are excited with uniform amplitude excitation...
Harmony search Optimization is a recently proposed population based meta-heuristic that mimics the improvisation of the aesthetic in music by the musicians. In this paper, the proposed algorithm is tested extensively on a set of 5 benchmark functions as well as the real world Circular adaptive Antenna Array design problem. The performance of the technique is compared with an already established evolutionary...
There is an ever-increasing demand on mobile wireless operators to provide voice and high-speed data services and to support more users per base station to reduce overall network costs and make the services affordable to subscribers. Smart antenna technology offers a significantly improved solution to reduce interference levels and improve the system capacity. These systems of antennas include different...
Particle Swarm Optimization (PSO) Algorithmwith the Schelkunoff method is used to synthesize the conformal array. Evolutionary Techniques are in rise in electromagnetic as design tools and problem solvers because of their ability to optimize complex multimodal search spaces. This paper discusses the design and optimization of cylindrical antenna arrays with special emphasis on traditional polynomial...
High-gain antennas best for covering long distance communication applications. This paper describes a High-gain, dual band L-shaped Micro strip patch antenna is printed on a FR-4 substratefor WLAN systems, and has dimensions of 60 × 70 ×1.6mm3 with a ground plane. The dual-band operation is obtained by embedding a pair of L-shaped slots. This proposed antenna is simulated using a CST microwave studio...
In this paper the design problem of an equi-spaced linear array is considered with the constraint of reducing side lobe level which results in the leakage of the received signal energy. In order to achieve this, powerful tool based on the event of probability has to be chosen. We consider an evolutionary approach, which avoids the adaptive nature and avails the tuning mechanism. Genetic Algorithm...
Smart Antenna systems have recently received increasing interest as the demand for better quality and new value added services on the existing wireless communication systems. These system of antennas include different array geometry and different adaptive techniques to enhance the received modulated signal with a fixed DOA by suppressing the inferences. Although enormous study has been done on smart...
Here we have presented an alternate ANN structure called functional link ANN (FLANN) for channel equalization. In contrast to a feed forward ANN structure i.e. a multilayer perceptron (MLP), the FLANN is basically a single layer structure in which non-linearity is introduced by enhancing the input pattern with nonlinear function expansion. A novel method of training the FLANNs using PSO Algorithm...
One of the main obstacles to reliable communications is the inter symbol interference. An adaptive equalizer is required at the receiver to mitigate the effects of non-ideal channel characteristics and to obtain reliable data transmission. The conventional way to combat with ISI is to include an equalizer in the receiver. This paper presents a new approach to equalization of communication channels...
This paper presents a new approach to equalization of communication channels using Functional Link Artificial Neural Networks (FLANNs). A novel method of training the FLANNs using PSO Algorithm is described. The performance of the proposed network has been compared with the conventional LMS based channel equalizer and FLANN trained with BP algorithm based equalizer. From the results it can be noted...
Antenna designers are constantly challenged with the temptation to search for optimum solutions for the design of complex electromagnetic devices. The ability of using numerical methods to accurately and efficiently characterizing the relative quality of a particular design has excited the engineers to apply stochastic global evolutionary optimizers for this objective. Evolutionary techniques have...
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