Is spiral modulation really useful?
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Chu, Haobing
issued: 2017-01-21T03:59:42
issued: 2016
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: The performance analysis of modulation techniques has been studied extensively. In this thesis, we investigate the performance of a new modulation technique called spiral modulation. Spiral modulation uses complex spirals in the complex plane to modulate data and form complex signals. Spiral modulation was proposed by Astrapi Corporation and the company claimed that spiral modulation is better than the conventional modulations and can exceed the Shannon limit. In this thesis, we explore the potential of spiral modulation and verify the claims by using MATLAB simulation according to the Astrapi's spiral modulation patents. We first present the system structure and the concept of spiral modulation. Then, we focus on the bit-error rate (BER) performance analysis and the spectral efficiency analysis by using MATLAB simulation. In the BER performance analysis, our simulation results reveal that the BER performance of spiral modulation can be better than some conventional modulations when the constellation size is equal or larger than eight if the bandwidth is not taken into consideration. In the spectral efficiency analysis, we estimate the bandwidth of spiral modulation signals by using the periodogram method. The results show that the bandwidth of spiral modulation signal is not strictly limited. A spectral efficiency plane is plotted, and it shows that the spectral efficiency of spiral modulation is worse than the conventional modulation techniques. We conclude that, contrary to the claim made by Astrapi, the spiral modulation can not exceed Shannon capacity boundary on the spectral efficiency plane.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/60140
note: IS SPIRAL MODULATION REALLYUSEFUL?byHaobing ChuB.Eng., Birmingham City University, UK, 2012M.Sc., The University of Warwick, UK, 2013A THESIS SUBMITTED IN PARTIAL FULFILLMENT OFTHE REQUIREMENTS FOR THE DEGREE OFMASTER OF APPLIED SCIENCEinTHE COLLEGE OF GRADUATE STUDIES(Electrical Engineering)THE UNIVERSITY OF BRITISH COLUMBIA(Okanagan)December 2016c© Haobing Chu, 2016 The undersigned certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis entitled: IS SPIRAL MODULATION REALLY USEFUL? Submitted by Haobing Chu in partial fulfillment of the requirements of The degree of Master of Applied Science . Julian Cheng, School of Engineering Supervisor, Professor (please print name and faculty/school above the line) Jahangir Hossain, School of Engineering Supervisory Committee Member, Professor (please print name and faculty/school in the line above) Chen Feng, School of Engineering Supervisory Committee Member, Professor (please print name and faculty/school in the line above) Yang Cao, School of Engineering University Examiner, Professor (please print name and faculty/school in the line above) External Examiner, Professor (please print name and university in the line above) 16/Dec/2016 (Date submitted to Grad Studies) Additional Committee Members include: Please print name and faculty/school in the line above Please print name and faculty/school in the line above AbstractThe performance analysis of modulation techniques has been studied extensively. Inthis thesis, we investigate the performance of a new modulation technique called spiralmodulation. Spiral modulation uses complex spirals in the complex plane to modulatedata and form complex signals. Spiral modulation was proposed by Astrapi Corporationand the company claimed that spiral modulation is better than the conventional modula-tions and can exceed the Shannon limit. In this thesis, we explore the potential of spiralmodulation and verify the claims by using MATLAB simulati…
has type: Thesis/Dissertation
date issued: 2017-02
is shown at: 10.14288/1.0340494
language: eng
degree discipline: Electrical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/60140