iosr-JVSP   Volume-13 ~ Issue-4 ~ Jul. - Aug. 2023

ABSTRACT: This paper aimed at a comparative study of the performance of the Least Mean Square (LMS) and Recursive Least Square (RLS) algorithms of the adaptive beam forming antenna on the CDMA based network. The smart antenna test-bed used include a single input multiple output system which consists of one transmitter and six receivers. During experimentation, the interference and noise reduction capabilities of the adaptive antenna were investigated using the LMS and RLS algorithms. Also, the two adaptive algorithms were simulated and evaluated for a 6 uniform linear array elements with inter-element spacing of 0.5λ on the CDMA based network using MATLAB version 7.5. In the simulation, the angle of arrival of the desired signal and the interfering signal were at 30˚ and 60˚ respectively......

Keywords: Smart antenna, adaptive beamforming, RLS algorithm, LMS algorithm , adaptive antenna, antenna

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ABSTRACT: Super-resolution (SR) become the most important task in image processing because of requirement of high quality of images. It becomes popular in technology like computer vision and pattern recognition. In Single Image Super-resolution (SR) uses the sequences of single low resolution (LR) images from high resolution (HR) to improve the quality of image. The SR is an image processing problem which aims to generate a high resolution (HR) image from low resolution input image. The SR is difficult because of the missing information in the given LR image. Thus in SR it is very important to boost the reconstruction performance so that, there is need of effective prior knowledge.......

Keywords: Accuracy, bi-linear SR, Directional group sparsity, PSNR, Super-Resolution

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ABSTRACT: The need for high capacity long haul telecommunication system to carry huge traffic demands in recent times has lead to the use of optic fiber communication system because of its high capacity carrying advantage over wireless systems. But optic fiber signals suffer some signal impairment issues such as nonlinearity which tends to degrade its transmission performance. This paper proposed the use of adaptive optical equalizer to mitigate such impairments. To achieve that, a simulink model of the system was first developed for simulation experiments. Then the.....

Keywords: Nonlinear optic fiber, self-phase modulation, Kerr effect, refractive index, nonlinearity mitigation

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