Limits of Acoustic Waveguide Communication

دانشگاه آزاد اسلامی اصفهان(خوراسگان)

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" Limits of Acoustic Waveguide Communication "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	149991
Doc. No	:	ET21783
Main Entry	:	Sinan SinanoviC
Title Proper	:	Limits of Acoustic Waveguide Communication
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	A new method of wireless data telemetry in oil well services uses compressionalacoustic waves to transmit data along the drill string. The compressional acousticwaves are produced as coded wave trains by an acoustic transducer, travel through thedrill string and subsequently decoded to recover the data. Normal drilling operationsproduce in-band acoustic noise from multiple sources at intensities comparable to thetransducer output. Based on a theoretical channel model, we predict that the drillstring acoustic channel has a capacity of several hundreds bits per second in such noisydrilling conditions. In making these calculations, the surface noise is shown to be thelimiting factor. We explore methods of improving channel capacity by exploitingupward and downward propagation modes. Simulations based on our acoustic modelshow that substantial (an order of magnitude or more) capacity increases can result..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL44966.pdf
Title and statement of responsibility and	:	Limits of Acoustic Waveguide Communication [Thesis]