Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2003, Vol. 26 ›› Issue (1): 64-68.

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A Novel Method of Inverting Signal Spectrum for Software Radio System

ZHANG Yu-liang,  WU Wei-ling,  TIAN Bao-yu   

  1. Inf or mat ion Engineer ing S ch ool , Beijing Universit y of Pos t s and T el ecom municat ions , Beij ing 100876, Chin a
  • Online:2004-01-28

Abstract: While the direct band-pass sampling method for multiple discontinuous narrow-band radio signals can ease up the A/D bottleneck in a software radio system, thespectrum of some of signal may be inverted. The impact of the inverseplacement of spectrum for signals with different modulation modes is analyzed,then the method to invert radio signal spectrum is given. An implementation method with low computation complexity(number of computation needed per unit time) is given based on multi-rate digital signal processing theory.

Key words: multi-rate digital signal processing, band-pass sampling, inverse placement of spectrum

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