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Development and Implementation of a Real Time High-Resolution Channel Sounder – IF Stage

Ferreira, D. ; Caldeirinha, Rafael

Development and Implementation of a Real Time High-Resolution Channel Sounder – IF Stage, Proc Vehicular Technology Conference: VTC-Spring , Budapest, Hungary, Vol. 1, pp. 1 - 5, May, 2011.

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Abstract
This paper presents an intermediate frequency (IF)
stage of a swept time delayed cross-correlation (STDCC) channel
sounder. The proposed topology employs the real-time sliding
correlation technique of pseudo-random (PN) sequences,
enabling amplitude and Doppler spectrum measurements and
analysis of multipath components. It makes use of recent
technologies, specifically in the generation and transmission of
PN sequences, which allows for an easy adjustment of the main
specifications of the sounder. The system presented herein has
been tested and validated by using a PN sequence at 1GHz chip
rate, which allows for a time-delay resolution of consecutive
multipath components of 2ns. The dynamic range at the input of
the IF stage was measured to be better than 40dB.