Coding-Spreading Tradeoff for Lattice Codes

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" Coding-Spreading Tradeoff for Lattice Codes "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151183
Doc. No	:	ET22975
Main Entry	:	A hmad Khoshilevis
Title Proper	:	Coding-Spreading Tradeoff for Lattice Codes
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	fixed bandwidth expansion can be achieved either by coding or spreading, whileeach have different effect on the resultant signal space. Coding increases both Shannonand Fourier bandwidth whereas spreading only increases the Fourier bandwidth. Inthis document we are looking for the optimum combination of coding and spreading,in a Code Division Multiple Access (CDMA) system, that mininlizes the averageframe error rate under hding channel with multiple antennas at transmitter andreceiver. Using the theory of lattice code, we show that in a system with K users.the optimum spreading factor N equals I(. Simulation results support the analysis.In simulations we used Minimum-....,....-...,..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	:	TL46204.pdf
Title and statement of responsibility and	:	Coding-Spreading Tradeoff for Lattice Codes [Thesis]