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N. S. Murti Sarma

A Design For Aperture Coupled Planar Array Using Microwave Technology

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LAP Lambert Academic Publishing Okt 2017, 2017

Anbieter AHA-BUCH GmbH, (Einbeck, Deutschland)
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Taschenbuch. Neuware - This monograph describes the performance of the Aperture Coupled Microstrip Planar Array in C-band. The basic concept of aperture coupling is to achieve the wide frequency bandwidth & low back radiation. The enhancement of the bandwidth in the present case is achieved by coupling to the microstrip antenna on one substrate from the microstrip line feed on another parallel substrate through an aperture in the ground plane, which separates the two substrates. A design procedure for aperture coupled microstrip antennas based on transmission line model is presented. The novel coaxial to microstrip line transition is devised and implemented to feed the aperture coupled microstrip antenna elements in planar array to achieve the wide impedance and pattern bandwidth. The experimental results of Return loss plot & Radiation pattern for aperture coupled microstrip planar array antenna are presented. This work is enhanced with topics such as literature survey, findings etc. 156 pp. Englisch. Neu. Artikel-Nr.: 9783659647789.

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N. S Murti Sarma

Optimization and Interference Minimization in Communications : An approved and awarded doctoral work in back ground of optical communications

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LAP Lambert Academic Publishing Feb 2020, 2020

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Taschenbuch. Neuware - In the propagation of signal over channel using optical modulation, the observed interference constraint the transmission efficiency. In a visible light communication model, Multi input multi output (MIMO) based communication models were used for its higher throughput and spectrum utilization. In MIMO based visible communication model, the objective of maximizing rate allocation for optimal transmission is focused. In the conventional model, the rate allocation were performed based on the traffic model, and no interference consideration were made. This constraint the optimization of resource allocation in MIMO based visible light communication. in this work, a new approach for resource allocation based on dual metric consideration of traffic consideration and inference model is developed. 156 pp. Englisch. Neu. Artikel-Nr.: 9786200480934.

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N. S. Murti Sarma

An Investigative Proposal On Speech Coding For VoiP Communication

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LAP Lambert Academic Publishing Aug 2017, 2017

Anbieter AHA-BUCH GmbH, (Einbeck, Deutschland)
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Taschenbuch. Neuware - The work embodied in this is based on Data security. This is one of the major concerns for digital data as well as voice transmission through non-privatized networks. Hence, a significant amount of research work is needed to provide reliable and secured data/voice transmission. The CS-ACELP algorithm based G.729 codec is standardized as voice codec by ITU-T for multimedia and Voice over Internet Protocol (VoIP) applications. The encoding scheme for CS-ACELP speech codec described in this work provides on-fly security for the encoded data for a secured speech transmission. This method is based on the periodically changing the track sequence of fixed code-book index for every 100 ms speech samples sampled at a rate of 8000 samples per second and also, adapting a new technique to encode the fixed code-book index. This book presents efficient way of providing data security for G.729 codec. 164 pp. Englisch. Neu. Artikel-Nr.: 9783330350557.

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