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Partial Matched Filter for Low Power and Fast Code Acquisition of DSSS-CPFSK Signals  

Park, Hyung-Chul (Hynix Semiconductor Inc.)
Publication Information
JSTS:Journal of Semiconductor Technology and Science / v.4, no.3, 2004 , pp. 204-209 More about this Journal
Abstract
A partial matched filter (PMF) for semi-coherent correlation code acquisition of the DSSS-CPFSK signal is proposed. It is a calculation-reduced structure of the hard-limited signal based FIR filter, yet its code acquisition time is equal to that of the hard-limited signal based FIR filter. The PMF eliminates duplicate calculations by utilizing the characteristic that the hard-limited DSSS-CPFSK signal has same value in several consecutive samples. For example, the PMF can achieve about 95% reduction in gate size, as compared to the hard-limited signal based FIR filter, when the modulation index of the DSSS-CPFSK signal is equal to 1.5 and the sample rate is equal to 40 sample/chip.
Keywords
CPFSK; DSSS; Hard-limiting; Semi-coherent correlation detection; Code acquisition; FIR filter;
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Times Cited By KSCI : 1  (Citation Analysis)
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