Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (10): 16-19，24.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Multiplex Transmission of Chirp Signals and Continuous Carrier Signals

Wen Rong-hui  Sha Xue-jun  Guo Pei   

  1. School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
  • Received:2008-10-07 Revised:2008-12-09 Online:2009-10-25 Published:2009-10-25
  • Contact: 温容慧（1981-），女，博士生，主要从事信号处理研究． E-mail:wenronghui@126．com
  • About author:温容慧（1981-），女，博士生，主要从事信号处理研究．
  • Supported by:

    国家“973”计划项目（2007CB310606）

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Abstract:

Based on the excellent energy concentration performance of cosine and Chirp signals in the frequency domain and the fractional Fourier transform （FrFT） domain, a communication system for frequency band reuse is designed. This system transmits multiplex BPSK signals respectively with cosine and Chirp signals as carriers within the same bandwidth, and performs the corresponding FrFY in the receiver to concentrate energies right around the peak of output. Moreover, the carrier signals in a narrowband are filtered in the FrFT domain, and are then demodulated in the time domain after an inverse FrFT. Simulated results show that the proposed system is of better antiinterference performance, as compared with the system only using cosine signals.

Key words: frequency band reuse, fractional Fourier transform, carrier signal, Chirp signal