Mitarbeiter

M. Sc. Bernhard Gäde

Kontakt

Publikationen

2019

  • B. Gäde, M. Amon, A. Bereyhi, G. Fischer, and R. Müller, "Outphasing Elements for Hybrid Analogue Digital Beamforming and Single-RF MIMO" in 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton, UK, 2019. [Bibtex]
    @inproceedings{gaede2019,
    abstract = {In conventional Multiple-Input Multiple Output (MIMO) systems, each antenna requires its own Radio Frequency (RF) chain. Since each RF-chain includes several active components that have to be synchronised, costs and complexity become restrictive. The outphasing MIMO and the outphasing precoder architectures are possible approaches to mitigate this problem. The core of both architectures are Outphasing Elements (OEs), which are used to form a electronically controllable, passive antenna feed network. In this paper, these OEs are analysed with respect to component tolerances. The feasibility of the outphasing concept is demonstrated by the implementation of a hardware prototype OE. The performance of this prototype is measured and compared to theoretical predictions with good agreement.},
    author = {Gäde, Bernhard and Amon, Michael and Bereyhi, Ali and Fischer, Georg and Müller, Ralf},
    language = {English},
    booktitle = {2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
    cris = {https://cris.fau.de/converis/publicweb/publication/217858356},
    year = {2019},
    month = {05},
    day = {14},
    eventdate = {2019-05-14/2019-05-18},
    faupublication = {yes},
    keywords = {outphasing,MIMO,hybrid analog digital precoding,beamforming,sensitivity},
    peerreviewed = {unknown},
    title = {Outphasing Elements for Hybrid Analogue Digital Beamforming and Single-RF MIMO},
    type = {Journal Article},
    venue = {Brighton, UK},
    }

2018

  • S. Erhardt, B. Gäde, A. Koelpin, and R. Weigel, "Enhanced GSM Broadcast Receiver using the Phase Output of a Sub-GHz Transceiver" in 2018 48th European Microwave Conference (EuMC), Madrid, Spain, 2018, pp. 1137-1140. [DOI] [Bibtex]
    @inproceedings{erhardt2018a,
    abstract = {With Sub-GHz transceivers it is possible to receive GSM broadcast messages, for example for implementing cell-ID based localization. In this publication the phase information output of an ultra-low power Sub-GHz transceiver is used for a software defined GSM receiver. For enhanced results channel estimation and equalization can be applied.},
    author = {Erhardt, Stefan and Gäde, Bernhard and Koelpin, Alexander and Weigel, Robert},
    booktitle = {2018 48th European Microwave Conference (EuMC)},
    cris = {https://cris.fau.de/converis/publicweb/publication/200219991},
    year = {2018},
    month = {09},
    day = {25},
    doi = {10.23919/EUMC.2018.8541538},
    eventdate = {2018-09-25/2018-09-27},
    faupublication = {yes},
    keywords = {GSM;Receivers;Transceivers;Frequency modulation;Registers;Channel estimation;GSM;signal processing;channel estimation;equalizers},
    pages = {1137--1140},
    peerreviewed = {Yes},
    title = {Enhanced GSM Broadcast Receiver using the Phase Output of a Sub-GHz Transceiver},
    type = {Konferenzschrift},
    venue = {Madrid, Spain},
    }
  • B. Gäde, M. Amon, G. Fischer, and R. Müller, "Sensitivity Analysis of Outphasing Elements for Hybrid Analogue Digital Beamforming and Single-RF MIMO" in KleinheubacherTagung 2018, Miltenberg, 2018. [Bibtex]
    @inproceedings{gaede2018b,
    author = {Gäde, Bernhard and Amon, Michael and Fischer, Georg and Müller, Ralf},
    booktitle = {KleinheubacherTagung 2018},
    cris = {https://cris.fau.de/converis/publicweb/publication/211434090},
    year = {2018},
    month = {09},
    day = {24},
    eventdate = {2018-09-24/2018-09-26},
    faupublication = {yes},
    peerreviewed = {unknown},
    title = {Sensitivity Analysis of Outphasing Elements for Hybrid Analogue Digital Beamforming and Single-RF MIMO},
    type = {Konferenzschrift},
    venue = {Miltenberg},
    }
  • B. Gäde and G. Fischer, "CEPT SE7(18)102 Reference Values for RX Intermodulation", 2018. [Bibtex]
    @other{fischer2018,
    author = {Gäde, Bernhard and Fischer, Georg},
    editor = {ECO},
    language = {English},
    publisher = {CEPT},
    cris = {https://cris.fau.de/converis/publicweb/publication/201423287},
    year = {2018},
    month = {07},
    day = {03},
    faupublication = {yes},
    keywords = {Receiver Intermodulation,RX non-linearity,IIP3},
    peerreviewed = {automatic},
    title = {CEPT SE7(18)102 Reference Values for RX Intermodulation},
    type = {anderer},
    url = {https://cept.org/ecc/groups/ecc/wg-se/se-7/client/meeting-documents/?flid=8409},
    }
  • B. Gäde and G. Fischer, "CEPT SE7(18)106 Impact of LTE BS Activity Factor on TETRA RX Intermodulation", 2018. [Bibtex]
    @other{gaede2018,
    author = {Gäde, Bernhard and Fischer, Georg},
    editor = {ECO},
    cris = {https://cris.fau.de/converis/publicweb/publication/201691868},
    year = {2018},
    month = {07},
    day = {13},
    faupublication = {yes},
    keywords = {RX Intermodulation,BS activity factor},
    peerreviewed = {automatic},
    title = {CEPT SE7(18)106 Impact of LTE BS Activity Factor on TETRA RX Intermodulation},
    type = {anderer},
    url = {https://cept.org/ecc/groups/ecc/wg-se/se-7/client/meeting-documents/},
    }
  • B. Gäde and G. Fischer, "CEPT SE7(18)105 Efficient frequency domain algorithms for calculation of RX Intermodulation", 2018. [Bibtex]
    @other{gaede2018a,
    author = {Gäde, Bernhard and Fischer, Georg},
    editor = {ECO},
    publisher = {ECO},
    cris = {https://cris.fau.de/converis/publicweb/publication/201875147},
    year = {2018},
    month = {07},
    day = {18},
    faupublication = {yes},
    keywords = {RX Intermodulation,non-linear Circuit Technology,non-linear systems},
    peerreviewed = {automatic},
    title = {CEPT SE7(18)105 Efficient frequency domain algorithms for calculation of RX Intermodulation},
    type = {anderer},
    url = {https://cept.org/ecc/groups/ecc/wg-se/se-7/client/meeting-documents/},
    }
  • G. Fischer and B. Gäde, "CEPT SE7(18)103 Status of Seamcat IM plugin validation", 2018. [Bibtex]
    @other{fischer2018a,
    author = {Fischer, Georg and Gäde, Bernhard},
    editor = {ECO},
    language = {English},
    cris = {https://cris.fau.de/converis/publicweb/publication/201424089},
    year = {2018},
    month = {06},
    faupublication = {yes},
    keywords = {RX Intermodulation},
    peerreviewed = {automatic},
    title = {CEPT SE7(18)103 Status of Seamcat IM plugin validation},
    type = {anderer},
    url = {https://cept.org/ecc/groups/ecc/wg-se/se-7/client/meeting-documents/?flid=8409},
    }

2017

  • B. Gäde, M. A. Sedaghat, C. Rachinger, G. Fischer, and R. Müller, "A Novel Single-RF Outphasing MIMO Architecture" in WSA 2017; 21th International ITG Workshop on Smart Antennas; Proceedings of, Technische Universität Berlin, Germany, 2017, pp. 1-7. [Bibtex]
    @inproceedings{gaede2017,
    author = {Gäde, Bernhard and Sedaghat, Mohammad Ali and Rachinger, Christoph and Fischer, Georg and Müller, Ralf},
    language = {English},
    booktitle = {WSA 2017; 21th International ITG Workshop on Smart Antennas; Proceedings of},
    cris = {https://cris.fau.de/converis/publicweb/publication/200398030},
    year = {2017},
    month = {03},
    day = {15},
    eventdate = {2017-03-15/2017-03-17},
    eventtitle = {21st International ITG Workshop on Smart Antennas (WSA 2017)},
    faupublication = {yes},
    pages = {1--7},
    peerreviewed = {unknown},
    title = {A Novel Single-RF Outphasing MIMO Architecture},
    venue = {Technische Universität Berlin, Germany},
    }
  • M. A. Sedaghat, B. Gäde, R. Müller, and G. Fischer, "A Novel Hybrid Analog-Digital Transmitter for Multi-antenna Base Stations." 2017, pp. 1714-1718. [Bibtex]
    @inproceedings{sedaghat2017,
    abstract = {A new hybrid Analog-Digital (hybrid A-D) precoder is proposed for multi-antenna base stations in massive Multiple-Input Multiple-Output (MIMO) which allows a trade-off between the number of required RF-chains and the update rate of the analog part. It is shown that the number of RF-chains can be reduced even below the number of eigenmodes of the channel, thereby closing the gap between the standard hybrid A-D and the single-RF MIMO. This is achieved by dividing the input data streams into blocks and jointly optimizing the digital and the analog precoder parts for each block. The analog part of the precoder needs to be updated once per block and remains static over each block interval. Out of band radiation due to switching is resolved by inserting a short guard interval between blocks. It is shown the number of RF-chains can be any arbitrary positive integer to obtain zero distortion at the user terminals if the update rate is high enough. The proposed precoder offers a significant performance gain at the expenses of data dependent precoding and higher update rates of the analog part.},
    author = {Sedaghat, Mohammad Ali and Gäde, Bernhard and Müller, Ralf and Fischer, Georg},
    cris = {https://cris.fau.de/converis/publicweb/publication/200397152},
    year = {2017},
    month = {01},
    day = {01},
    faupublication = {yes},
    issn = {2076-1465},
    journaltitle = {2012 PROCEEDINGS OF THE 20TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO)},
    pages = {1714--1718},
    peerreviewed = {unknown},
    title = {A Novel Hybrid Analog-Digital Transmitter for Multi-antenna Base Stations},
    }

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