Browsing Theses by Supervisor "Khandani, Amir Keyvan"
Now showing items 1-12 of 12
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Adaptive Compensation of Nonlinear Impairments in Fiber-Optic Systems
(University of Waterloo, 2020-01-17)Optical communication systems are vital for high rate telecommunication. Fiber-optic communication system is an excellent choice due to its low loss, high bandwidth, and robustness to electromagnetic interference. However, ... -
AMShare: Distributed Frequency Synchronization of Small Cell Base Transceiver Stations Utilizing Commercial AM Wireless Signals
(University of Waterloo, 2017-08-31)Exponential growth of connected users in recent years and the increasing demands for ubiquitous coverage of wireless services has pushed the mobile operators to invest in innovative technologies that can support more ... -
Blind M-FSK Modulation in the ISI Channel
(University of Waterloo, 2016-08-31)Channel estimation has received considerable attention over the years for its contribution to more reliable signal decoding. General wireless communication environment would cause multi-path fading for signals that propagate ... -
Capacity Results for Interference Networks and Nested Cut-Set Bound
(University of Waterloo, 2016-09-20)In this thesis, a full characterization of the sum-rate capacity for degraded interference networks with any number of transmitters, any number of receivers, and any possible distribution of messages among transmitters and ... -
Gaussian Interference Channels: Examining the Achievable Rate Region
(University of Waterloo, 2016-08-31)Interference is assumed to be one of the main barriers to improving the throughput of communication systems. Consequently, interference management plays an integral role in wireless communications. Although the importance ... -
A Model for Self-Phase Modulation Noise in Fiber-link Communication Systems
(University of Waterloo, 2020-01-23)Recent tele-communication hugely relies on fiber-optic systems. Linear fiber-optic impairments can be modeled with chromatic and polarization-mode dispersion. However, nonlinear impairments such as SPM and XPM noise are much ... -
New Methods for Channel Allocation Schemes in wireless Cellular Networks
(University of Waterloo, 2018-09-19)Due to the fast-growing number of cell-phone users, channel allocation scheme for channel assignment plays an important role in cellular networks. Having known that for downlink transmission the base-station aims to ... -
Performance Comparison Between Variable and Fixed Signature Codes in DS-CDMA Systems
(University of Waterloo, 2016-08-30)In a CDMA or SCMA system, users can use a fixed signature for the whole transmission interval. But there is the possibility for two users to have highly correlated signatures. Hence, high interference exists in the system, ... -
A Reliable Multiple Access Scheme Based on Chirp Spread Spectrum and Turbo Codes
(University of Waterloo, 2017-08-25)Nowadays, smart devices are the indispensable part of everyone's life and they play an important role in the advancement of industries and businesses.These devices are able to communicate with themselves and build the ... -
Solutions to Mitigate Cross-Phase Modulation Impairment in Coherent Fiber-Optic Communications
(University of Waterloo, 2020-01-27)In this thesis, methods of exploiting and consequently, mitigating the nonlinearities in Cross-Phase Modulation (XPM) dominated ber-optic communication is suggested using the model provided by Ciena Corporation. An ... -
Time Synchronization in Distributed Systems without a Central Clock
(University of Waterloo, 2019-02-11)Time synchronization and a common understanding of the concept of time is an essential and important aspect of modern computing. Among the drawbacks of current and popular methods, such as the Network Time Protocol, ... -
Wireless One-time PAD : A Practical Method to Achieve Perfect Secrecy
(University of Waterloo, 2018-05-11)In this thesis, a new practical method to realize one-time pad perfect secrecy for wireless communication is presented. Most commonly used security methods are based on cryp- tographic techniques employed at the upper ...