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Volume 26 Issue 8
Aug.  2004
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Zeng Xiang-hua, Li Zheng-rong, Wang Fei-xue. Study on Windowing Degradation of Frequency Domain Narrowband Interference Suppression Algorithms in Spread Spectrum System[J]. Journal of Electronics & Information Technology, 2004, 26(8): 1276-1281.
Citation: Zeng Xiang-hua, Li Zheng-rong, Wang Fei-xue. Study on Windowing Degradation of Frequency Domain Narrowband Interference Suppression Algorithms in Spread Spectrum System[J]. Journal of Electronics & Information Technology, 2004, 26(8): 1276-1281.

Study on Windowing Degradation of Frequency Domain Narrowband Interference Suppression Algorithms in Spread Spectrum System

  • Received Date: 2003-04-19
  • Rev Recd Date: 2003-07-25
  • Publish Date: 2004-08-19
  • In spread spectrum system, frequency-domain interference suppression algo-rithms always use data windows to reduce the spectral leakage associated with truncation, and employ overlap to lessen the SNR degradation due to windowing. In this paper, the windowing degradation and the data composing are studied. An improved method has been put forward to compose the data after overlap based on Capozzas(2000) method. The ana-lyzed and simulated results show that the new method leads to a less SNR degradation than Capozzas method at the cost of a few more addition.
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  • Young J A,Lehnert J S.Analysis of DFT-based frequency excision algorithms for direct-sequence spread-spectrum communications [J].IEEE Trans.on Communications.1998,46(8):1076-1087[2]Harris F J.On the use of windows for harmonic analysis with the discrete Fourier transform [J].Proc.IEEE.1978,66(1):51-83[3]Capozza P T,Holland B J,Hopkinson T M,Landrau R L.A single-chip narrow-band frequencydomain excisor for a global position system(GPS)[J].IEEE J.of Solid-State Circuits.2000,35(3):401-411[4]朱近康.CDMA通信技术[M].北京:人民邮电出版社,2001:11-20.[5]Welch P D.The use of fast Fourier transform for the estimation of power spectra:A method based on time averaging over short modified periodgrams [J].IEEE Trans.on Audio and Electroacoustics,1967,AU-15(2):70-73.
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