A technique to determine number and locations of frame synchronization pilot carriers in pilot-based OFDM systems
IEEE 12th Signal Processing and Communications Applications Conference, Kusadasi, Turkey, 28 - 30 April 2004, pp.61-64, (Full Text)
- Publication Type: Conference Paper / Full Text
- Doi Number: 10.1109/siu.2004.1338257
- City: Kusadasi
- Country: Turkey
- Page Numbers: pp.61-64
- Ankara University Affiliated: Yes
Abstract
In this study, generation of frame synchronization waveforms with desired autocorrelation properties was addressed for OFDM systems that use pilot tones for frame synchronization. Genetic algorithm (GA) was proposed to search for good subcarrier locations for frame synchronization pilots. The performance of the generated synchronization waveforms was evaluated in a simulated OFDM system and it was demonstrated that the generated waveforms achieve desired frame synchronization performance. It was shown that the GA converges to a good solution much faster than a random search when the GA parameters were properly chosen. The best side peak level suppression for a given number of carriers was also investigated.