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JPEG is widely accepted standard for image compression. JPEG image compression makes use of quantization table to control the compression ratio and quality of compressed image. Hence, generation of quantization table for the JPEG baseline algorithm is viewed as an optimization problem. For the past few decades, methods used for determining the quantization table have been based on Rate-distortion...
With the need for high-speed networking connectivity, the optical network has played a crucial role in last decade. Although the system is commercially practiced, still there exist various issues for which reason; it is constantly under the focus of research groups. The paper introduces a technique called as ETPC i.e. Enhancing Transmittance Power and Capacity for efficient communication in Optical...
Spectrum sensing is an important task to find out the spectrum holes in a given radio spectrum. Spectrum sensing performance is improved with aid of multiple cognitive radios (CRs) in the network and each CR having multiple antennas. In this paper, we are considering that each CR having multiple antennas and improved energy detector (IED) is used for detection of primary user (PU). We have derived...
This paper proposes an accurate and efficient strategy for identification of Hammerstein model based nonlinear systems using Craziness based Particle Swarm Optimization (CRPSO) algorithm. The closeness of estimation of the proposed CRPSO based identification scheme has been justified with the optimal value of MSE and the corresponding comparative study with the other techniques reported in earlier...
Spectrum sensing is an important task to find out the spectrum holes in a given radio spectrum. Spectrum sensing performance is improved with aid of multiple Cognitive Radios (CRs) in the network and each CR having multiple antennas. In this paper, we are considering that each CR having multiple antennas and improved energy detector (IED) is used for detection of primary user (PU). We have derived...
Satellite images are mostly degraded due to the inaccuracy or limitations of the transmission and storage devices. Removal of noise from satellite images are still a challenging task for many researchers. The conventional image denoising algorithms mostly use wavelet transform. The main limitation of wavelet transform is that it can capture only limited information along different directions. Hence...
Modern age electronic systems give highest speed and performance. Hardware optimization leads to reduction in board area, hardware, number of components and also the manufacturing cost of the electronic system. Optimization becomes severe in design of battery operated portable equipments. By using multifunctional input output port pins, device level optimization can be achieved. Higher optimization...
Wavelet Mutation based Novel Particle Swarm Optimization (NPSOWM) technique is applied for the comparison of the performances of Circular array (CA), Hexagonal Array (HA) and Elliptical Array (EA) of isotropic antenna elements which can produce array pattern with maximum reduced Side-Lobe Level (SLL). Novel Particle Swarm Optimization (NPSO) explores the solution space more effectively for a better...
The logistics department has an important area of application for technology concerned with Wireless Sensors. The Idea is to deploy Wireless sensor motes in vehicles to study environmental conditions related to that of the carried goods. Using its communication as well as computation capability, wireless sensor motes can detect the occurrence of threshold violation(events) and send according alarming...
This paper presents architecture for a fused floating point three term adder unit. The fused or merge technique is described in this paper because in a fused technique three term addition is done in single unit. The purpose of doing this is to reduce delay, area as compared to traditional addition method. Several optimization techniques are used to reduce delay. The proposed design is implemented...
This paper presents an efficient approach for identification of fourth order nonlinear polynomial Hammerstein models using simplex particle swarm optimization (Simplex-PSO) algorithm. The accuracy of the proposed Simplex PSO based identification scheme has been justified with the optimal value of MSE and the corresponding comparative study with the other reported approaches. The statistical information...
This paper presents an efficient approach for identification of a nonlinear Hammerstein model using Bacteria Foraging Optimization (BFO) Algorithm. The accuracy and the efficiency of the proposed BFO based identification scheme have been justified with the optimal value of MSE and the corresponding comparative statistical information. The statistical information of the MSE has also been provided to...
An optimum design of analog CMOS differential amplifier (Diff-Amp) with current mirror load has been presented in this paper. An evolutionary optimization technique called Opposition based Harmony Search Algorithm (OHS) is employed to minimize the total MOSFET area of the designed circuit. The novel Harmony Search (HS) algorithm is selected as the parent and the opposition based approach is employed...
This paper proposes a new method for image segmentation using Cat Swarm Optimization (CSO) by multilevel thresholding. In the algorithm, each cat contains a set of threshold values that helps to get a given image partitioned into regions. The fitness value, position and velocity information of each cat is used to update the threshold values of each cat. The evaluation function deals with the segmented...
The effects of channel fading can be mitigate by incorporate the cooperative communication by diversity gain through cooperation between relay nodes in wireless mobile ad-hoc networks. In a battery operated mobile nodes the energy is valuable limited resource. In this paper, we studied and compare the energy efficiency for triple hop mobile ad-hoc networks consisting origin node (O), intermediate...
Selective encryption approaches for efficient multimedia content protection is proposed in wireless multimedia sensor networks (WMSNs) by many authors. Apart from these methodologies, the other important aspect which is discussed in some literatures is the combined optimization of multimedia quality, content protection and energy issues pertaining to communication. However in these joint optimization...
Speech signal quality augmentation involves the challenge to scale down the noise and to perk up the transparency In this paper the performance of two optimization algorithms is compared for denoising the speech signal. The optimization techniques such as Artificial Bee Colony(ABC), Cuckoo Search (CS)algorithm, are used as adaptive algorithms for generating the parameters of adaptive filtering function...
Particle Swarm Optimization with Aging Leader and Challengers (ALC-PSO) method, which represents a novel approach for optimization problems, is applied for radiation pattern synthesis of a three ring Concentric Elliptical Array Antenna (CEA) of isotropic elements which can generate beam pattern with maximum reduced Side Lobe Level (SLL). This paper introduces a recently developed metaheuristic algorithm,...
An accurate identification is very essential for the stability of the nonlinear dynamic plant. It is highly challenging job to findout an accurate model with minimum prior knowledge in the system that are highly nonlinear and dynamic such as robotics and autonomous system. Fuzzy neural networks are highly used to deal with the real world identification and classification issue. But if the system carries...
In this paper an efficient and accurate approach for identification of Hammerstein model has been proposed using Social Emotional Optimization Algorithm (SEOA). In SEOA method, behaviour of human being for attaining superior position in society is structured. The accuracy of the proposed SEOA based identification scheme has been justified with the optimal value of MSE and their corresponding comparative...
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