Simulation of a non-coherent UWB transceiver design - noise and impairment analysis

Abstract

The performance of an ultra wideband (UWB) system operating in the 3.1 GHz–10.6 GHz band is investigated in the presence of different system impairments. The UWB system uses a transmitted-reference technique with pulse position modulation for transmission and a receiver with non-coherent detection. The performance of the system is simulated under different channel model conditions including additive white Gaussian noise and multipath fading for a transceiver with imperfect clock timing (jitter). The bit error rate of the overall system is characterised for different combinations of channel and clock impairments. A practical application of the system is analysed for a wireless video link between a laptop and external high definition television. The receiver system noise temperature together with the channel and clock impairments are evaluated, and a novel relationship is developed to calculate the link budget for the required transmission power to achieve a desired signal to noise ratio at the demodulator input.