Search Results - "Hochwald, Bertrand M."
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A High-Order Model for Fast Estimation of Electromagnetic Absorption Induced by Multiple Transmitters in Portable Devices
Published in IEEE transactions on antennas and propagation (01-12-2017)“…In the development of 5G communication systems, multiantenna transmitting architectures and millimeter-wave operating frequency bands are effective ways to…”
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2
New Equivalent Model of a Quantizer With Noisy Input and Its Applications for MIMO System Analysis and Design
Published in IEEE access (2020)“…We propose a novel equivalent model for a quantizer with noisy input (the desired signal corrupted by measurement noise). It presents the quantizer output as a…”
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Closed-Loop Precoding and Capacity Analysis for Multiple-Antenna Wireless Systems With User Radiation Exposure Constraints
Published in IEEE transactions on wireless communications (01-10-2015)“…Mobile handsets, classified as portable devices, are regulated on the amount of user electromagnetic exposure. The widely accepted exposure measurement is the…”
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4
How much training is needed in multiple-antenna wireless links?
Published in IEEE transactions on information theory (01-04-2003)“…Multiple-antenna wireless communication links promise very high data rates with low error probabilities, especially when the wireless channel response is known…”
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A Training-Based Mutual Information Lower Bound for Large-Scale Systems
Published in IEEE transactions on communications (01-08-2022)“…We provide a mutual information lower bound that can be used to analyze the effect of training in models with unknown parameters. For large-scale systems, we…”
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6
Dynamic Electromagnetic Exposure Allocation for Rayleigh Fading MIMO Channels
Published in IEEE transactions on wireless communications (01-02-2021)“…Future wearable and portable devices with multiple transmit antennas operating below 6 GHz are constrained by regulatory limitations on the level of…”
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7
Determining Electromagnetic Exposure Compliance of Multi-Antenna Devices in Linear Time
Published in IEEE transactions on antennas and propagation (01-12-2019)“…Electromagnetic exposure metrics such as specific absorption rate (SAR) are used to assess the user safety of portable wireless devices under all transmitting…”
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A 0.71-mW Antenna-Coupled On-Off-Key Receiver for Gbps Millimeter-Wave Wireless Communications
Published in IEEE transactions on microwave theory and techniques (01-04-2023)“…This article presents a 39-GHz 800-Mb/s antenna-coupled ON-OFF-key (OOK) receiver with a baseband output capable of driving a 50-<inline-formula> <tex-math…”
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Broadband Matching Bounds for Coupled Loads
Published in IEEE transactions on circuits and systems. I, Regular papers (01-04-2015)“…The Bode-Fano bounds on the integral over all frequency of the logarithm of the reflection coefficient between a source and a load, connected to each other…”
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10
High-rate codes that are linear in space and time
Published in IEEE transactions on information theory (01-07-2002)“…Multiple-antenna systems that operate at high rates require simple yet effective space-time transmission schemes to handle the large traffic volume in real…”
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11
Systematic Design of Large-Scale Multiport Decoupling Networks
Published in IEEE transactions on circuits and systems. I, Regular papers (01-07-2014)“…In radio-frequency systems that drive coupled dissipative loads, the matching network between the amplifiers and their loads needs to account for the coupling…”
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12
Signal-Level Models of Pointwise Electromagnetic Exposure for Millimeter Wave Communication
Published in IEEE transactions on antennas and propagation (01-05-2020)“…Electromagnetic exposure from wireless devices is strictly regulated around the world to ensure the safety of consumers. Recent studies have demonstrated that…”
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13
A vector-perturbation technique for near-capacity multiantenna multiuser communication-part II: perturbation
Published in IEEE transactions on communications (01-03-2005)“…Recent theoretical results describing the sum-capacity when using multiple antennas to communicate with multiple users in a known rich scattering environment…”
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14
Fast transfer of channel state information in wireless systems
Published in IEEE transactions on signal processing (01-04-2006)“…Knowledge of accurate and timely channel state information (CSI) at the transmitter is becoming increasingly important in wireless communication systems. While…”
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15
Differential unitary space-time modulation
Published in IEEE transactions on communications (01-12-2000)“…We present a framework for differential modulation with multiple antennas across a continuously fading channel, where neither the transmitter nor the receiver…”
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Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading
Published in IEEE transactions on information theory (01-03-2000)“…Motivated by information-theoretic considerations, we propose a signaling scheme, unitary space-time modulation, for multiple-antenna communication links. This…”
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17
Capacity of a mobile multiple-antenna communication link in Rayleigh flat fading
Published in IEEE transactions on information theory (01-01-1999)“…We analyze a mobile wireless link comprising M transmitter and N receiver antennas operating in a Rayleigh flat-fading environment. The propagation…”
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18
Cayley differential unitary space-time codes
Published in IEEE transactions on information theory (01-06-2002)“…One method for communicating with multiple antennas is to encode the transmitted data differentially using unitary matrices at the transmitter, and to decode…”
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19
Systematic design of unitary space-time constellations
Published in IEEE transactions on information theory (01-09-2000)“…We propose a systematic method for creating constellations of unitary space-time signals for multiple-antenna communication links. Unitary space-time signals,…”
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20
Representation theory for high-rate multiple-antenna code design
Published in IEEE transactions on information theory (01-09-2001)“…Multiple antennas can greatly increase the data rate and reliability of a wireless communication link in a fading environment, but the practical success of…”
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