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Chirp pulse compression in non-coherent Impulse-Radio Ultra-Wideband detection without waveform signature estimation

The paper investigates benefits of using chirp pulse compression in non-coherent Impulse-Radio Ultra-Wideband (IR-UWB) communications. Furthermore, we develop closed form expression for bandwidth and dimension of the signal after the chirp pulse compression that was lacking before. Two usual types of non-coherent IR-UWB detection are considered - energy detection of PPM-modulated symbols and sample-wise differential detection of DPSK-modulated symbols. These detection schemes show deterioration of bit error probability performance with an increase of the dimension of the signal in detection. The performance of the aforementioned detection schemes improves significantly when chirp pulse compression is applied, i.e. when dimension of the signal in detection is reduced. As we show, this performance enhancement happens in noise as well as in multi-user interference.