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

  • 제58권11호
  • /
  • Pages.2286-2291
  • /
  • 2009
  • /
  • 1975-8359(pISSN)
  • /
  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

직교 주파수 분할 다중(OFDM) 시스템에서 반송파 위상 최적화 기반의 사이드로브 억압 기법

Sidelobe Suppression Technique in OFDM System Based on Phase Optimization of Subcarriers

  • 황유모 (명지대학교 통신공학과) ;
  • Published : 2009.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

Abstract

We propose a phase optimization technique for sidelobe suppression in OFDM system. The technique is based on idea that phase shift to some of the transmit symbols within the symbol constellation plane can lead to significant sidelobe suppression. The sidelobes are reduced by optimizing using iterative method the phases of some subcarriers on the left and right hand side of the used OFDM spectrum. The proposed technique requires a small amount of side information that needs to be transmitted. Simulation results show that the proposed technique can reduce the sidelobes by significant amount.

Keywords

References

  1. Capar, T. Weiss, I. Martoyo, and F. Jondral, 'Analysis of coexistence strategies for cellular and wireless local area networks,' Vehicular Technology Conference, 2003. VTC Fall 2003, Orlando, FL USA, October 2003 https://doi.org/10.1109/VETECF.2003.1285338
  2. T. Weiss and F. Jondral, 'Spectrum Pooling - An innovative strategy for the enhancement of spectrum efficiency,' IEEE Communications Magazine, vol. 42, no. 3, March 2004 https://doi.org/10.1109/MCOM.2004.1273768
  3. T. Weiss, H. A. Krohn and F. K. Jondral, 'Mutual interference in OFDM-based spectrum pooling system,' in IEEE 59th Semiannual Vehicular Technology Conference, VTC Spring 2004, May 2004
  4. S. Brandes, I. Cosovic and M. Schnell, 'Sidelobe suppression in OFDM systems by subcarrier weighting,' IEEE Communication Magazine 2005
  5. S. Brandes, I. Cosovic and M. Schnell, 'Sidelobe suppression in OFDM systems by Insertion of cancellation carriers,' in IEEE 62nd Semiannual Vehicular Technology Conference, VTC Fall 2005, Sept. 2005 https://doi.org/10.1109/VETECF.2005.1557490
  6. S. Brandes, I. Cosovic and M. Schnell, 'Multiple choice sequences for sidelobe reduction in OFDM system,' IEEE Communication Magazine 2005