Loading...
Search for:
equalizer
0.077 seconds
Multiple-Access Techniques for Wireless Indooor Infrared Communication with Dispersive Link
, Ph.D. Dissertation Sharif University of Technology ; Nasiri-Kenari, Masoumeh (Supervisor)
Abstract
Infrared wireless local area networks are a suitable choice for a fast and cheap wireless network, providing rates over 10 Mbps with access to unregulated bandwidth. Among multiple-access techniques for infrared wireless networks, CDMA1 has attracted the most interest, due to its simple structure and power ecency. However, spreading the spectrum in CDMA prohibits exploiting the low-rate strong channel codes. The other limiting factor in infrared networks is the channel dispersion. In this thesis, these two issues are considered and an internally coded scheme for time-hopping CDMA, suitable for wireless infrared communication is proposed and with accurate modelling of infrared dispersive...
Design and Efficient Implementation of Equalizer and Synchronizer Block in Recent Telecommunication Links Standards
, M.Sc. Thesis Sharif University of Technology ; Shabany, Mahdi (Supervisor)
Abstract
Today, telecommunication links transmit information wirelessly at high rates; The transmission channel is not ideal and the transmitted signal undergoes changes in the channel and then reaches the receiver; Also, the processing blocks in the transmitter and receiver are not completely similar and ideal; These two factors make it difficult for the receiver to recover the transmitted information and actually receives a signal that bears little resemblance to the transmitted signal. The most important effect that the channel has on the transmitted signal is due to the multi-path of the channel between the transmitter and the receiver, which causes a signal to reach the receiver through the...
Design of a Low Complexity Coherent Receiver for Partial Response Continuous Phase Modulation
, M.Sc. Thesis Sharif University of Technology ; Behroozi, Hamid (Supervisor)
Abstract
The design of optimal receivers has long been one of the fundamental challenges in communication systems, both from theoretical and practical perspectives. Despite their superior performance, optimal receivers often suffer from prohibitively high computational complexity, making their implementation difficult in real-world scenarios. Consequently, the development of reduced-complexity receivers that can closely approach optimal performance has attracted considerable attention. In this project, the objective is to design a receiver with low complexity while maintaining high efficiency in terms of bandwidth and power. Continuous Phase Modulation (CPM) is selected as the modulation scheme due...