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An investigation of quantization effects in OFDM at digital IF in high capacity digital wireless systems

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posted on 28.03.2022, 23:03 by Boyd McGregor Murray
OFDM (Orthogonal Frequency Division Multiplexing) modulation has been widely implemented in existing WLAN (Wireless Local Area Network) systems as well as being the modulation of choice for the emerging 4G LTE (Long Term Evolution) mobile phone data system. Quantization is a very important part of the design of such systems since much of the required complex signal processing is done in the digital domain. Quantization implemented by ADCs (analogue to digital converters) and DACs (digital to analogue converters) is a significant contributor to power consumption in battery-powered hand-held terminals and optimization of the quantization yields power savings and extended battery-life. Until now, the quantization process for OFDM systems has been poorly understood and the models used have been inadequte. This thesis introduces new methods to illuminate the OFDM quantization process and to optimize it for use in target high capacity digital wireless systems.


Table of Contents

1. Introduction -- 2. A review of OFDM and the new digital IF scheme -- 3. Starters: a Monte Carlo simulation case study -- 4. System description -- 5. Numerical approaches -- 6. Analytical approaches -- 7. Applying quantization to MIMO -- 8. Conclusions.


"In partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering, Macquarie University, New South Wales, Australia". Bibliography: pages 257-262 "2012 (submitted March 27, 2013)"

Awarding Institution

Macquarie University

Degree Type

Thesis PhD


PhD, Macquarie University, Department of Engineering

Department, Centre or School

Department of Engineering

Year of Award


Principal Supervisor

Sam Reisenfeld


Copyright disclaimer: http://www.copyright.mq.edu.au Copyright Boyd Murray 2013




1 online resource (xxxiv, 262 pages) illustrations (some coloured)

Former Identifiers

mq:32324 http://hdl.handle.net/1959.14/298454 2194583