Peak-to-average power ration reduction OFDM symbols

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dc.contributor.authorCarson, Neil Latimeren_US
dc.date.accessioned2024-08-13T17:28:16Z
dc.date.available2024-08-13T17:28:16Z
dc.date.copyright2003en_US
dc.date.issued2003
dc.degree.departmentDepartment of Electrical and Computer Engineering
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractIn this thesis, a new method of peak-to-average power ratio (PAPR) reduction for orthogonal frequency division multiplexed (OFDM) symbols is developed. A modi­fied repeat-accumulate (RA) code is developed by extending the concept of selective mapping (SLM) by M. Breiling, S. Miiller-Weinfurtner and J . Huber. This new code gives the PAPR reduction of selective mapping and increases the error correcting performance due to the iterative decoding process. Simulations were done to show the effects of number of sub-carriers, number of decoding iterations, number of encoder states, interleaver optimization and clipping. All simulations used an AWGN channel model and QPSK modulation. Results are compared to SLM and show favorable improvement with respect to error correct­ing performance. With the addition of clipping, the PAPR reduction is improved while the performance of the code is still maintained. Examples are also given of performance in existing OFDM systems.
dc.format.extent48 pages
dc.identifier.urihttps://hdl.handle.net/1828/17428
dc.rightsAvailable to the World Wide Weben_US
dc.titlePeak-to-average power ration reduction OFDM symbolsen_US
dc.typeThesisen_US

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