전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제58권8호
  • /
  • Pages.1633-1637
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  • 2009
  • /
  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

스펙트럼 공유를 위한 직교 주파수 분할 다중 (OFDM) 시스템에서의 사이드로브 억압 기법

Sidelobe Suppression Technique in OFDM Systems for Spectrum Sharing

  • 황유모 (명지대학교 통신공학과) ;
  • 발행 : 2009.08.01
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⟨ 이전 논문 다음 논문 ⟩

초록

We propose a new technique for sidelobe suppression in orthogonal frequency division multiplexing (OFDM) systems. Sidelobe suppression is an essential technique to design OFDM based overlay system. The proposed technique is based on the combination of the multiple choice sequence (MCS) with the conventional windowing of OFDM signal in time domain. The MCS is choosing the one sequence which has lowest power in sidelobes from the produced set of sequences. The main advantage of proposed technique is that it fully utilizes the available bandwidth to transmit data. Simulation results show that by combining MCS with conventional windowing technique, the sidelobes in OFDM system can be significantly reduced

키워드

참고문헌

  1. T. Weiss and F. K. Jondral, 'Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency,' in IEEE Communications Magazine, March 2004 https://doi.org/10.1109/MCOM.2004.1273768
  2. I. Coso vic and T, Mazzoni, 'Suppression of sidelobes in OFDM systems by multiple-choice sequences,' in European Trans on Telecommuni- cations, Vol. 17, no. 6, 2006 https://doi.org/10.1002/ett.1162
  3. S. Brandes, I. Cosovic and M. Schnell, 'Reduction of out-of-band radiation in OFDM based overlay systems,' in New Frontiers in Dynamic Spectrum Access Networks, 2005
  4. Saleem Ahmed, Razi Ur Rehman and Humor Hwang., 'New techniques to reduce sidelobes in OFDM system', in the Proceedings of 3rd IEEE International Conference on Convergence and Hybrid Information Technology (lCCIT), Vol. 2, pp. 117-121, November 2008, Pusan, South Korea https://doi.org/10.1109/ICCIT.2008.157
  5. Saleem Ahmed, Razi Ur Rehman, Abdul Sattar, Dileep Kumar and Humor Hwang., 'New techniques to reduce out-of-band radiations in OFDM system to design a successful spectrum sharing systems', in the Proceedings of Joint Conference on Satellite Communications (JC-SAT 2008), November 2008, Pusan, South Korea
  6. I. Cosovic and V. Janardhanam, 'Sidelobe suppression in OFDM system,' in Proceedings of International Workshop on Multi-Carrier SpreadSpectrum (MC-SS'05), September 2005