Spread OFDM via carrier interferometry spreading codes: performance, throughput, and PAPR enhancement

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.

Name thesis:degree_name

Doctor of Philosophy (Ph.D.)

Level thesis:degree_level

Doctoral

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Grantor dc:publisher

Colorado State University. Libraries

Year dc:date.issued

2003

Authors dc:creator

• Wiegandt, David A., author
• Nassar, Carl R., advisor
• Chandrasekar, V., committee member
• Lile, Derek, committee member
• Smith, Fred, committee member

• electrical engineering

Statement dc:rights

• 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.

Language dc:language.iso

eng, English

Identifier URI

https://doi.org/10.25675/3.025884

OAI identifier oai:identifier

oai:mountainscholar.org:10217/243028