Search Results - "Andre, B.J"

A UAV-Aided Real-Time Channel Sounder for Highly Dynamic Nonstationary A2G Scenarios by Mao, Kai, Zhu, Qiuming, Qiu, Yanheng, Liu, Xin, Song, Maozhong, Fan, Wei, Kokkeler, André B. J., Miao, Yang

“…With the rapid development and broad applications of unmanned aerial vehicle (UAV)-based wireless stations in the sky, fundamental understanding and…”
Get full text

Hardware Implementations for Voice Activity Detection: Trends, Challenges and Outlook by Yadav, Shubham, Legaspi, Patrice Abbie D., Alink, Mark S. Oude, Kokkeler, Andre B. J., Nauta, Bram

“…Voice Activity Detection (VAD) is a technique used to identify the presence of human voice in an audio signal. It is implemented as an always-on component in…”
Get full text

Measurement and Estimation Methodology for EMC and OTA Testing in the VIRC by Mahfouz, MHD Zaher, Vogt-Ardatjew, Robert, Kokkeler, Andre B. J., Glazunov, Andres Alayon

“…In recent years, promising results have been reported with the vibrating intrinsic reverberation chamber (VIRC) combining performance and cost-efficiency for…”
Get full text

Impact of Ultra-Narrowband Interference on Wi-Fi Links: An Experimental Study by Mahfouz, MHD Zaher, Kokkeler, Andre B. J., Meijerink, Arjan, Glazunov, Andres Alayon

“…We develop a systematic methodology to experimentally investigate the impact of interference from a non-listen-before-talk ultra-narrowband (UNB) signaling…”
Get full text

Interference Mitigation by Adaptive Analog Spatial Filtering for MIMO Receivers by Alaei, Masoud Abbasi, Golabighezelahmad, Sajad, de Boer, Pieter-Tjerk, van Vliet, Frank E., Klumperink, Eric A. M., Kokkeler, Andre B. J.

“…Exposed to strong cochannel/adjacent-channel interference, digital multiple-input-multiple-output (MIMO) receivers require high-dynamic-range analog-to-digital…”
Get full text

Height-adaptive human gait model through radar-driven pipeline with two co-located mmWave MIMO radars by Veld, Roy, Kokkeler, Andre B. J., Chiumento, Alessandro, Miao, Yang

“…In this paper, a methodology for developing a human walking model adapted to the individual measured by radar was proposed. The fundamental parameters used in…”
Get full text

On the Low Complexity Implementation of the DFT-Based BFSK Demodulator for Ultra-Narrowband Communications by Safapourhajari, Siavash, Kokkeler, Andre B. J.

“…The DFT-based demodulator for BFSK has been introduced for applications where the received signal experiences a carrier frequency offset (CFO) much larger than…”
Get full text

Spectrum Efficient, Localized, Orthogonal Waveforms: Closing the Gap With the Balian-Low Theorem by Korevaar, C. Willem, Kokkeler, Andre B. J., de Boer, Pieter-Tjerk, Smit, Gerard J. M.

“…The Balian-Low theorem (BLT) states the fundamental impossibility to design waveforms for L 2 (ℝ), which 1) form an orthogonal set, 2) are time-frequency…”
Get full text

Vector Modulator-Based Analog Beamforming Using the Least Euclidean Distance Criterion by Alaei, Masoud Abbasi, Kokkeler, Andre B. J., De Boer, Pieter-Tjerk

“…In traditional multiple-input multiple-output (MIMO) receivers, radio frequency (RF) front-ends are exposed to interference as no analog spatial filtering is…”
Get full text

Offset Tolerant Demodulator for Frequency/Phase Modulation in Time-Varying Channel by Safapourhajari, Siavash, Kokkeler, Andre B. J.

“…Carrier frequency offset (CFO) and time-varying fading channels are two problems that emerging ultra-narrowband solutions for Internet of Things and Wireless…”
Get full text

Multi-Receiver Cross-Correlation Technique for (B)FSK Radios by Purushothaman, Vijaya Kumar, Mikhael, Mina R. M., Alink, Mark S. Oude, Klumperink, Eric A. M., Kokkeler, Andre B. J., Nauta, Bram

“…This article presents a multi-receiver cross-correlation technique for (B)FSK receivers, targeting wireless sensor network applications. Here, multiple…”
Get full text

Dissolution of limestone fractures by cooling waters: Early development of hypogene karst systems by Andre, B.J, Rajaram, H

“…Fracture dissolution in the early stages of karstification under hypogene conditions is investigated using a coupled numerical model of fluid flow, heat…”
Get full text

Spectrum Sensing With High Sensitivity and Interferer Robustness Using Cross-Correlation Energy Detection by Oude Alink, Mark S., Kokkeler, Andre B. J., Klumperink, Eric A. M., Smit, Gerard J. M., Nauta, Bram

“…Dynamic spectrum access relying on spectrum sensing requires reliable detection of signals in negative signal-to-noise ratio (SNR) conditions to prevent…”
Get full text

An Ultra Low Energy FSK Receiver With In-Band Interference Robustness Exploiting a Three-Phase Chirped LO by Dutta, Ramen, van der Zee, Ronan, Kokkeler, Andre B. J., Bentum, Mark J., Klumperink, Eric A. M., Nauta, Bram

“…An ultra-low-energy Binary Frequency Shift Keying (BFSK) receiver is proposed. It features improved in-band interference tolerance by chirping the transmission…”
Get full text

A correlating receiver for ES-OFDM using multiple antennas by Kokkeler, Andre B. J., Smit, Gerard J. M.

“…Extended Symbol OFDM (ES-OFDM) is applied in case of a multiple antenna receiver. The receiver architecture is based on the observation that OFDM constellation…”
Get full text

Fourier-hermite communications; where Fourier meets Hermite by Korevaar, C. Willem, Kokkeler, Andre B. J., de Boer, Pieter-Tjerk, Smit, Gerard J. M.

“…A new signal set, based on the Fourier and Hermite signal bases, is introduced. It combines properties of the Fourier basis signals with the perfect…”
Get full text

An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture by Qiwei Zhang, Kokkeler, A.B.J., Smit, G.J.M.

“…Cognitive radio is a promising technology to utilize non-used parts of the spectrum that actually are assigned to licensed services. An adaptive OFDM based…”
Get full text

Empirical Characterization and Modeling of the Propagation Channel inside the VIRC by Mahfouz, MHD Zaher, Vogt-Ardatjew, Robert, Kokkeler, Andre B. J., Glazunov, Andres Alayon

“…Over-the-air (OTA) testing and electromagnetic compatibility (EMC) measurements are widely performed in classical reverberation chambers. A less-known…”
Get full text

Frequency offset tolerant demodulation for low data rate and narrowband wireless sensor node by Safapourhajari, Siavash, Kokkeler, Andre B. J.

“…The issue of frequency offset in low data rate, narrowband and low power communication nodes is considered in this paper. To avoid power hungry precise…”
Get full text

Low Complexity Synchronization for Offset Tolerant DFT-Based BFSK Demodulator by Safapourhajari, Siavash, J. Kokkeler, Andre B.

“…A DFT-based demodulator for BFSK is used for applications where the received signal experiences a carrier frequency offset (CFO) much larger than the data…”
Get full text