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Christian A. Hofmann

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2020 – today

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2024
[c30]
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  - conf/meditcom/EltohamyHKK24
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Ali Eltohamy, Christian A. Hofmann, Andreas Knopp, Matthias Korb:
Turbo Receiver for Short-Block-Length Polar-Coded Direct-Access Satellite-IoT Systems. MeditCom 2024: 143-148
2023
[j5]
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Kevin T. Li, Christian A. Hofmann, Harald Reder, Andreas Knopp:
A Techno-Economic Assessment and Tradespace Exploration of Low Earth Orbit Mega-Constellations. IEEE Commun. Mag. 61(2): 24-30 (2023)
[c29]
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Daniel Weinzierl, Christian A. Hofmann, Andreas Knopp:
Blind Geolocation of RF-Signals with LEO Satellite Formations. MILCOM 2023: 365-370
2022
[j4]
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Christian A. Hofmann, Andreas Knopp:
Phase Noise Limits in Low-Rate Communication via Satellite. IEEE Internet Things J. 9(16): 14867-14875 (2022)
[j3]
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Yazhou Zhu, Christian A. Hofmann, Andreas Knopp:
Distributed Resource Optimization for NOMA Transmission in Beamforming SATCOM. IEEE J. Sel. Areas Commun. 40(4): 1190-1209 (2022)
[c28]
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Yazhou Zhu, Christian A. Hofmann, Andreas Knopp:
Machine Learning-based Flexible Payload Power Resource Allocation for Non-orthogonal SATCOM. GLOBECOM 2022: 2369-2375
[c27]
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Yazhou Zhu, Christian A. Hofmann, Andreas Knopp:
Ka-Band LEO Satellite Internet of Things Channel Characterization: Survey and Measurement. ICC 2022: 3076-3081
2021
[c26]
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Christian A. Hofmann, Kai-Uwe Storek, Andreas Knopp:
Impact of Phase Noise and Oscillator Stability on Ultra-Narrow-Band-IoT Waveforms for Satellite. ICC 2021: 1-6
[c25]
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Yazhou Zhu, Christian A. Hofmann, Andreas Knopp:
Performance Optimization for Multi-Gateway NOMA-Beamforming in Multi-Beam SATCOM. ICC 2021: 1-6
[c24]
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Kevin T. Li, Christian A. Hofmann, Florian Völk, Andreas Knopp:
Techno-Economic Design Aspects of Satellite Mega-Constellations for 6G Services. VTC Fall 2021: 1-6
2020
[c23]
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Christian A. Hofmann, Andreas Knopp:
Tracking of Remote IoT Devices by Satellite Assisted Geolocation. ICC 2020: 1-6

2010 – 2019

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2019
[j2]
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Christian A. Hofmann, Andreas Knopp:
Ultranarrowband Waveform for IoT Direct Random Multiple Access to GEO Satellites. IEEE Internet Things J. 6(6): 10134-10149 (2019)
[c22]
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Christian A. Hofmann, Andreas Knopp:
Direct Access to GEO Satellites: An Internet of Remote Things Technology. 5G World Forum 2019: 578-583
2018
[c21]
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Christian A. Hofmann, Andreas Knopp:
Satellite Downlink Jamming Propagation Measurements at Ku-Band. MILCOM 2018: 853-858
2017
[c20]
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Ovais Bin Usman, Josef A. Nossek, Christian A. Hofmann, Andreas Knopp:
Joint MMSE precoder and equalizer for massive MIMO using 1-bit quantization. ICC 2017: 1-6
[c19]
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Robert T. Schwarz, Florian Völk, Andreas Knopp, Christian A. Hofmann, Kai-Uwe Storek:
The multiple-satellite MIMO channel of narrow band vehicular communications at UHF. MILCOM 2017: 447-452
2016
[c18]
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Christian A. Hofmann, Kai-Uwe Storek, Robert T. Schwarz, Andreas Knopp:
Spatial MIMO over satellite: A proof of concept. ICC 2016: 1-6
[c17]
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Stephan P. Winter, Christian A. Hofmann, Andreas Knopp:
Antenna diversity techniques for enhanced jamming resistance in multi-beam satellites. MILCOM 2016: 618-623
[c16]
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Robert T. Schwarz, Christian A. Hofmann, Andreas Knopp:
Results of a MIMO Testbed with Geosynchronous Ku-Band Satellites. WSA 2016: 1-5
2015
[c15]
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Kai-Uwe Storek, Christian A. Hofmann, Andreas Knopp:
Impact of the Atmosphere on the Signal Phase and the Channel Capacity in EHF MIMO Satellite Links. GLOBECOM 2015: 1-7
[c14]
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Christian A. Hofmann, Robert T. Schwarz, Andreas Knopp:
Measurement and modeling of the UHF satellite channel for animal tracking systems. ICC 2015: 903-909
[c13]
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Christian A. Hofmann, Robert T. Schwarz, Andreas Knopp:
Performance analysis of diversity techniques for secure SATCOM-on-the-move systems. MILCOM 2015: 1403-1408
[c12]
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Kai-Uwe Storek, Christian A. Hofmann, Andreas Knopp:
Interferometer for Measurements of the MIMO Satellite Channel at Ku-Band. VTC Fall 2015: 1-5
2013
[c11]
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Christian A. Hofmann, Dirk Ogermann, Berthold Lankl:
Measurement Results for the Comparison of Multiple and Single Polarized MIMO Channels in LOS, NLOS, Indoor and Outdoor Scenarios. WSA 2013: 1-8
[c10]
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Michel T. Ivrlac, Bernhard Lehmeyer, Josef A. Nossek, Christian A. Hofmann, Berthold Lankl:
Estimation of Noise Parameters in Multi-Antenna Receivers using Digitized Signal Samples. WSA 2013: 1-6
2010
[j1]
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Andreas Knopp, Christian A. Hofmann, Mohamed Chouayakh, Berthold Lankl:
Measurement Survey on the Antenna Configuration Impact on the Spectral Efficiency of MIMO Radio Channels: Analyzed with a Focus on Low-Mobility, Indoor Line-of-Sight Channels. Wirel. Pers. Commun. 52(1): 165-176 (2010)
[c9]
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Christian A. Hofmann, Andreas Knopp, Berthold Lankl:
Indoor LOS MIMO Channel Measurements with a Focus on Antenna Array Design. GLOBECOM 2010: 1-5

2000 – 2009

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2009
[c8]
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Christian A. Hofmann, Andreas Knopp, Dirk Ogermann, Berthold Lankl:
Amplify-and-forward relay stations in correlated line-of-sight indoor MIMO channels. PIMRC 2009: 2325-2329
2008
[c7]
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Andreas Knopp, Robert T. Schwarz, Dirk Ogermann, Christian A. Hofmann, Berthold Lankl:
Satellite System Design Examples for Maximum MIMO Spectral Efficiency in LOS Channels. GLOBECOM 2008: 2890-2895
[c6]
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Christian A. Hofmann, Andreas Knopp, Dirk Ogermann, Robert T. Schwarz, Berthold Lankl:
Deficiencies of common MIMO channel models with regard to indoor Line-of-Sight channels. PIMRC 2008: 1-6
[c5]
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Robert T. Schwarz, Andreas Knopp, Dirk Ogermann, Christian A. Hofmann, Berthold Lankl:
Optimum-capacity MIMO satellite link for fixed and mobile services. WSA 2008: 209-216
2007
[c4]
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Andreas Knopp, Christian A. Hofmann, Mohamed Chouayakh, Berthold Lankl:
Exploiting Single SISO Impulse Responses to Predict the Capacity of Correlated MIMO Channels. GLOBECOM 2007: 3184-3189
[c3]
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Andreas Knopp, Christian A. Hofmann, Robert T. Schwarz, Mohamed Chouayakh, Berthold Lankl:
Spatial Capacity Estimation for Correlated MIMO Channels Based on Measured SISO Data Records. ISWCS 2007: 50-54
[c2]
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Andreas Knopp, Robert T. Schwarz, Christian A. Hofmann, Mohamed Chouayakh, Berthold Lankl:
Measurements on the Impact of Sparse Multipath Components on the LOS MIMO Channel Capacity. ISWCS 2007: 55-60
[c1]
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Andreas Knopp, Christian A. Hofmann, Mohamed Chouayakh, Berthold Lankl:
Extension of Indoor SISO Propagation Models for Correlated MIMO Channels - An Exemplification Applying Saleh's Model. PIMRC 2007: 1-6

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