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Non-coherent UWB receivers are often implemented using energy detection architectures which are very sensitive to noise in the channel and interference. Therefore, the receiver bandwidth plays an important role since the total noise and interference energy is proportional to this bandwidth. This work provides analytical expressions to find the optimal receiver bandwidth and quantifying the effect...
Since the coherent receivers are not feasible to implement low-cost ultra-wideband (UWB) impulse radio (IR) devices featuring extremely low power consumption, energy detector-based (ED-based) noncoherent receivers are more and more frequently chosen. The Pulse Polarity Modulation (PPM) scheme with a threshold compensated receiver is a promising candidate for the implementation of cheap and robust...
Time synchronization is a major challenge and a rich area of study in chirp ultra-wideband (UWB) communication systems. Since the pulse compressed by the matched filter is very short, the performance of chirp receivers is closely relative to precise timing acquisition. However, the existent method is very sensitive to noise. In this paper, we propose an improved synchronization method that allows...
This paper presents system modeling (SM), simulation and design trade-off analysis for an Ultra-Wideband (UWB) Impulse Radio (IR) transceiver for biotelemetry applications, particularly high resolution image data transmission in wireless endoscopes. The UWB system model was created incorporating the human body attenuation effect, the IEEE 802.14a indoor channel model, and channel noise so as to explore...
Autonomous sensors that transmit small packets of telemetry data based on UWB modulation are being considered for indoor short range applications. An issue is the detection of these packets at the access node receiver due to channel noise and multipath. Detection is further compromised by the likely clock offset of the sensor transmitter. In this paper the detectability of such a packet is analyzed...
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