Sidelobe Suppression Methods of Cubic-Phase Linear Chirp in Two-Ray Multipath Model for UWB Ranging

The UWB communication system occupies a very large bandwidth, 7.5 GHz. This enables high precision ranging that provides correct position information. In this paper, we will present a method to reduce side-lobes in receiver. Reducing side-lobes can enhance the accuracy of ranging system. Ranging system with high ratio of main-lobe to 1st side-lobe produces lower calculation error in ranging. Proposed cubic-phase chirp signal method can reduce the power of 1st side-lobe, that is, realize higher accurate ranging.

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