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Many new wireless communication technologies have been developed over the years to effectively address the problem of ever growing spectral congestion. Among them, impulse radio attracts significant attention due to its simplicity, signal properties and availability of massive spectrum. In order to utilize the advantages offered by impulse radio, our research group has developed a new Differential...
In recent years, millimeter waves attract significance attention due to its global availability of massive spectral resources. Many technologies have been developed using millimeter waves for various applications. Among them, wideband impulse radio technology offers several advantages compared to traditional narrowband systems. In this paper, we propose and present the implementation of an impulse...
In this paper, a unified framework, denoted as generalized nonlinear detection (GND), is developed to encompass existing nonlinear detection technologies as well as further optimize the performance of nonlinear detection for noncoherent impulse radio (IR) ultra-wideband (UWB) receivers. Computer simulations show that independent of absence or presence of narrowband interferences (NBIs), the GND-based...
In this paper, a blind narrowband interference (NBI) mitigation technique using the combination of a square law (SL) device and a band pass filter (BPF) is proposed for energy detection (ED) based ultra-wideband (UWB) receivers. Both theoretical analysis and computer simulations show that without requiring any prior knowledge about the NBI, the SL technique can considerably improve signal-to-interference...
An ultra-wideband (UWB) system has a frequency bandwidth that overlaps with spectra of many existing narrowband radio systems. As a result, impact of narrowband interference (NBI) becomes a key issue in the development of UWB systems. In this paper, under the IEEE802.15.4a industrial line-of-sight (LOS) channel model, the effects of NBI on the performance of the recently proposed differential code-shifted...
In this paper, the bit-error rate (BER) performance of the differential code-shifted reference (DCSR) transceiver for impulse radio ultra-wideband (IR UWB) systems is analyzed theoretically and validated through computer simulations. Furthermore, a thorough comparison between the DCSR transceiver and the existing transceiver architectures, namely, the transmitted reference, the frequency-shifted reference,...
UWB systems based on impulse radio (IR-UWB) have the potential to provide very low duty cycles and low power consumption. Furthermore, IR-UWB has the advantages of being able to carry out precision localization and to handle multi-path signals. Consequently, with its low implementation complexity, it is an ideal candidate for sensor network applications. In an IR-UWB system, pulse generator is a key...
In this paper, the bit-error rate (BER) performance of the code-shifted reference (CSR) transceiver for impulse radio ultra-wideband (IR-UWB) systems is analyzed theoretically, and the validation of the theoretical analysis results are verified with computer simulations. Furthermore, by comparing the BER performance of the CSR, TR and FSR transceivers, this paper shows that as a low complexity transceiver...
In this paper, the performances of the selective Rake receiver and the transmitted reference (TR) receiver are evaluated through computer simulations, for impulse radio ultra-wideband (UWB) systems. The performances of these two receivers are compared by bit error rate (BER), system complexity, and implementation considerations, under IEEE802.15.4a industrial line-of-sight (LOS) and non-line-of-sight...
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