Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)
- 2001.11a
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- Pages.34-38
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- 2001
CP-OFDM System using Circular Polarization
원편파를 이용한 CP-OFDM 시스템
Abstract
This paper proposes a CP-OFDM(Orthogonal Frequency Division Multiplexing using Circular Polarization) system for improving the system performance. The circular polarization has a characteristic that it cannot receive the reflected waves which are reflected by odd times. By reducing the influences of the reflected waves, the circular polarization can reduce the time delay spread and the inter-channel interference. The guard interval needed for the OFDM frame can be minimized and the orthogonality between subchannels can be improved by using circular polarization. Therefore the proposed CP-OFDM system can improve the system performance as well as the spectrum efficiency. Both theoretical analysis and system simulation results are described.
Keywords