Chadi Jabbour

Digital Predistortion Based on Advanced Voltage-Aware Memory-Polynomial Modeling for Massive MIMO Systems

Ahmed A. Ghoniem, Reda Mohellebi, Dang‐Kièn Germain Pham, Chadi Jabbour

fr (code pays fourni par la source)

D-Band Plastic Waveguide Design and Unified Channel Modeling for System-Level Simulation

Louis Royer, Reda Mohellebi, Lionel Vogt, Chadi Jabbour

cz, fr (code pays fourni par la source)

Triboelectric-RF Hybrid Energy Harvesters: Lateral-Sliding and Contact-Separation Modes

Yayi Lu, Kyriaki Niotaki, Reda Mohellebi, Karim Ben Kalaia et autres

fr (code pays fourni par la source)

Frequency Weighted NTF Synthesis for Cost-Efficient ΣΔ based DPD Feedback Loops

Haoyang Zeng, Dang-Kien Germain Pham, Reda Mohellebi, Chadi Jabbour

fr (code pays fourni par la source)

Spatio-Temporal Delta-Sigma Modulation for Massive MIMO with Low-Resolution DACs

Nicolas Schlegel, Chadi Jabbour, Philippe Ciblat

Going toward extreme multiple input multiple output (MIMO) antenna systems, each individual radio frequency (RF) chain will require cost and energy efficient implementations. While low resolution digital-to-analog converters (DACs) present a straightforward path toward achieving this goal, the introduced quantization error will …

fr (code pays fourni par la source)

A High-Speed Digital Delta-Sigma Modulator Based on Temporal Unrolling and Zero-Padding

Evelyn Cristina de Oliveira Lima, Yves Mathieu, Chadi Jabbour

fr (code pays fourni par la source)

A Dual-Rate Hybrid DAC for High-Speed 6G Massive MIMO Transceivers

Akram Akbari, Eric Wantiez, Chadi Jabbour

This paper presents the design, modeling, and simulation of a dual-rate hybrid digital-to-analog converter (DAC) architecture optimized for 6G massive multiple-input multiple-output (MIMO) transmitters. The proposed structure splits the digital input into a low-resolution Nyquist-rate path for the most significant bits (MSBs) …

fr (code pays fourni par la source)

Circulator-Based RF Energy Harvester with Wide Input Power Dynamic Range

Albert Kibiwott, Reda Mohellebi, Kyriaki Niotaki, Chadi Jabbour

Radio frequency energy harvesting (RFEH) is a promising solution for powering ultra-low-power (ULP) devices. However, capturing ambient energy is challenging due to low power densities and unpredictable RF power available in the surrounding environment. Moreover, conventional rectifiers exhibit limited power conversion efficiency …

fr (code pays fourni par la source)

Optimized Co-Design of Delta Sigma Modulators and Fir-DACs for High Speed Transmitters

Eduardo G. Lima, Nicolas Schlegel, Yves Mathieu, Chadi Jabbour

Delta sigma modulators (DSMs) are a very attractive solution to build flexible high resolution transmitters needed for future massive multiple-input multiple-output (mMIMO) systems. The main challenge in this architecture is its out-of-band (OOB) noise which can be addressed by using FIRDACs. This …

fr (code pays fourni par la source)

Quantized Precoding Under ACLR Constraints with FIR-DACs for Downlink MU-MIMO

Nicolas Schlegel, Chadi Jabbour, Álvaro Valcarce, Eric Wantiez

Scaling massive multiuser multiple-input multipleoutput (MIMO) to larger antenna numbers constrains each chain in terms of power consumption and implementation. In this paper, the use of low resolution digital-to-analog converters (DACs) enabling these large scale arrays in downlink multiuser massive MIMO is …

fr (code pays fourni par la source)

6G FR3 Band-limited Based DPD using Low-Resolution Σ∆ Feedback Receiver

Haoyang Zeng, Ahmed A. Ghoniem, Dang‐Kièn Germain Pham, Michel Vasilevski et autres

This paper presents the integration of a band-limited memory polynomial (BL-MP) digital pre-distortion (DPD) model with low-resolution Σ∆-based feedback receivers, specifically targeting 6G FR3 carrier aggregation using a 400 MHz OFDM 64QAM signal. The performance is evaluated using two power amplifiers (PAs)—Doherty …

fr (code pays fourni par la source)

Quantized Precoding Under ACLR Constraints with FIR-DACs for Downlink MU-MIMO

Nicolas Schlegel, Chadi Jabbour, Álvaro Valcarce, Eric Wantiez

Scaling massive multiuser multiple-input multipleoutput (MIMO) to larger antenna numbers constrains each chain in terms of power consumption and implementation. In this paper, the use of low resolution digital-to-analog converters (DACs) enabling these large scale arrays in downlink multiuser massive MIMO is …

fr (code pays fourni par la source)