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oai:mountainscholar.org:10217/2430282026-01-30T12:06:44Zcom_10217_100532com_10217_100000com_10217_100411com_10217_100303col_10217_100538col_10217_100415

Wiegandt, David A., author Nassar, Carl R., advisor Chandrasekar, V., committee member Lile, Derek, committee member Smith, Fred, committee member 2026-01-29T19:37:09Z 2003 https://hdl.handle.net/10217/243028 https://doi.org/10.25675/3.025884 Orthogonal Frequency Division Multiplexing (OFDM) has been an important technique in wireless communication architectures since the 1970's and 1980's. OFDM is now the protocol in the IEEE 802.11a and IEEE 802.1 lg Wireless Local Area Networks (WLANs) standards, as well as the IEEE 802.16 Fixed Broadband standard. It is also a front-runner for implementation in future cellular standards and satellite systems. However, OFDM is not without its limitations - both in terms of performance and Peak-to-Average Power Ratio (PAPR). In this dissertation, the author significantly enhances the performance of traditional OFDM systems via the introduction of novel Carrier Interferometry (Cl) spreading codes. Specifically, this research demonstrates through computer emulation and RF testing, that the application of Cl spreading codes to OFDM, leads to significant performance gains (relative to traditional OFDM), and an eliminated PAPR issue. The novel OFDM techniques introduced in this dissertation will significantly enhance the abilities of OFDM in the years to come. born digital doctoral dissertations English eng Colorado State University. Libraries 2000-2019 Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. Per the terms of a contractual agreement, all use of this item is limited to the non-commercial use of Colorado State University and its authorized users. electrical engineering Spread OFDM via carrier interferometry spreading codes: performance, throughput, and PAPR enhancement Text Doctor of Philosophy (Ph.D.) Doctoral Electrical and Computer Engineering Colorado State University This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). open.access