Francisco C. B. F. Müller

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Over the past decade, research and development in wireless sensor networks has investigated novel and exciting applications for a number of different scenarios. Impulse ultra wideband (UWB) communications promises a number of benefits for use in wireless sensor networks-particularly in forest environments where it can provide robust operation along with the(More)
Due to the much higher crosstalk impairing in high frequency channels compared to digital subscriber line (DSL) low frequency channels, the nonlinear TomlinsonHarashima precoding (THP) has a good potential to enhance the system performance. However, ordering plays an important role for the data rate performance in THP. The users precoded(More)
This paper presents a performance analysis of an ultra wideband (UWB) communication system based on Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) in the presence of narrowband interference. Although OFDMbased systems are known to be capable of withstanding some level of narrowband interference, mitigation techniques may have to be used when(More)
This paper describes an impulse noise measurement system for digital subscriber line channels composed by open hardware/software elements developed using the universal software radio peripheral and GNU is not Unix Radio. The proposed system proved to be capable of digitizing real occurrences of impulse noise. The goal is to use such system in large scale(More)
This work proposes a method for the evaluation of the effectiveness of adopting dynamic spectral management (DSM) algorithms in different DSL scenarios. In the last years several DSM algorithms emerged in the literature but their comparison has been typically conducted within few scenarios and considering specific operating points. This work proposes the(More)
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