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A novel Narrowband Interference (NBI) suppression scheme using a Soft Limiter (SLM) is proposed for a digital noncoherent receiver in Time-Hopping Pulse Position Modulation Ultra Wideband (TH-PPM-UWB) communications. The NBI suppression is carried out in the analog domain (before the digital processing) via a feedforward structure. The suitability of this NBI suppression concept is confirmed by the...
We propose a b-bit non-coherent receiver based on a Digital Code Matched Filter (DCMF) for a low data rate Time- Hopping Pulse Position Modulation Ultra Wide Band (TH-PPMUWB) system. The DCMF follows after a high-speed but lowresolution (b-bit, 1 ≤ b ≤ 4) Analog-to-Digital Convertor (ADC) and is employed before the non-coherent detection. It is matched to the user-specific sequence and restricts the...
We consider a low data rate non-coherent impulse radio ultra-wideband (IR-UWB) system based on binary pulse position modulation (2-PPM), which applies sparse codes to enable code division multiple access (CDMA). The suitability of sparse codes (i.e., codes with a low code weight) is investigated considering multi-user interference (MUI) and multipath propagation. The decoding of the particular CDMA...
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