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URN etd-0217104-131638 Statistics This thesis had been viewed 2398 times. Download 3742 times. Author Yu-Li Lin Author's Email Address No Public. Department Communication Engineering Year 2003 Semester 1 Degree Master Type of Document Master's Thesis Language English Page Count 62 Title Performance Analysis in the PAPR of OFDM System via SLM Scheme Keyword SLM PAPR OFDM OFDM PAPR SLM Abstract It is no doubt that the Digital Television (DTV) is the future trend. Now there are a lot of countries announced the DTV broadcasting schedule, and the schedule of import television with DTV receiver device. Now the Europe DVB-T adopted the OFDM as the transmission scheme. In Taiwan, Tatung University have fulfilled some field test to prove that the OFDM technology is better than 8-VSB when applying for mobile devices. Due to OFDM system has the following characteristic, such as anti channel fading and anti multi-path interference, 4G system also want to adopt the OFDM as it’s transmission specification.
But OFDM signal is composed by several multi-carriers, it’s peak power will degrade it’s system battery life. Scientists develop several algorithms to reduce the PAPR such as clipping theory, coding technology, and scrambling algorithm. Now the SLM and PTS scrambling technology are more and more important as consequence of the improvement of DSP technology.
In this thesis, an overview of OFDM system is presented. The schemes of reduction OFDM PAPR are discussed briefed. We focus on the different schemes of SLM scrambling such as different phase sequences, and we also discussed the best combination between different phase sequences and different clusters.
Advisor Committee Jie-Cherng Liu - advisor
Chau-yun Hsu - co-chair
Ching-huang Wei - co-chair
Files Date of Defense 2004-01-09 Date of Submission 2004-02-17