Year: 2012
Type: article
Abstract: This thesis addresses transmission of JPEG2000 coded images over frequency selective channels.We utilize an unequal power allocation algorithm to protect the codestream against disturbances in the wireless fading channel.To eliminate the negative effects of inter symbol interference and inter carrier interference, we design two separate systems for downlink and uplink data transmission: an orthogonal frequency division multiplexing system (downlink) and a single carrier frequency domain equalization system (uplink).We also investigate the time complexity of the power allocation algorithm, and assess the optimization process for minimizing the end to end distortion of the received images.The performance of our systems is further analyzed under deployment of multiple transmitter antennas, to achieve spatial diversity by incorporating space time block coding technique into the transmitter model.In addition, we explore addition of a linear constellation pre-coder matrix to the OFDM system to achieve multipath diversity during transmission of JPEG2000 images.The simulation results demonstrate a performance evaluation of our proposed systems for JPEG2000 image transmission with competing strategies, and measure transmission bandwidth efficiency and peak signal to noise ratio profile of the received images in our proposed systems.
Source: Summit (Simon Fraser University)
Author: Moein Shayegannia
Language: English
Subfield: Computer Vision and Pattern Recognition
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W172126895