MERL - Mitsubishi Electric Research Laboratories

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Communications

Wireless and optical communications.

We conduct advanced research in wireless and optical communications from the network layer down to the physical layer, including highly reliable machine-to-machine wireless networks, routing and scheduling for IoT networks, massive MIMO for 5G systems, flexible wideband RF front-end architectures, advanced error correction coding, and novel modulation and transmission techniques with adaptive signal processing for coherent fiber-optic and free-space optical communications.

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  • Researchers

  • Awards

    •  AWARD   MERL Researchers Won IEEE ICC Best Paper Award
      Date: May 22, 2019
      Awarded to: Siriramya Bhamidipati, Kyeong Jin Kim, Hongbo Sun, Philip Orlik
      MERL Contacts: Kyeong Jin (K.J.) Kim; Hongbo Sun
      Research Areas: Artificial Intelligence, Communications, Machine Learning, Signal Processing, Information Security
      Brief
      • MERL researchers, Kyeong Jin Kim, Hongbo Sun, Philip Orlik, along with lead author and former MERL intern Siriramya Bhamidipati were awarded the Smart Grid Symposium Best Paper Award at this year's International Conference on Communications (ICC) held in Shanghai, China. There paper titled "GPS Spoofing Detection and Mitigation in PMUs Using Distributed Multiple Directional Antennas," described a technique to rapidly detect and mitigate GPS timing attacks/errors via hardware (antennas) and signal processing (Kalman Filtering).
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    •  AWARD   Former Intern Receives IBM Scientific Award Honorable Mention
      Date: January 16, 2019
      Awarded to: Daniel Dinis
      MERL Contact: Rui Ma
      Research Areas: Communications, Signal Processing
      Brief
      • Former MERL intern Daniel Dinis from University of Aveiro (UA), Portugal has received the 2018 IBM Scientific Award with Honorable Mention referring to the contributions on "Real-time Tunable Delta-sigma modulators for All-Digital RF Transmitters" in his Ph.D. study.

        The award-winning work includes research conducted under the supervision of Arnaldo Oliveira and José Neto Vieira, professors from the Department of Electronics and Information Technology (DETI) of the UA, as well as contributions made during Daniel's 7 month internship in 2017 at MERL.

        The ceremony for the presentation of the 28th IBM Scientific Prize took on January 16th, at the Noble Hall of the Superior Technical Institute. It was chaired by Marcelo Rebelo de Sousa, President of the Portuguese Republic.
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    •  AWARD   MERL researchers presented 5 papers at the 2016 Optical Fiber Communication Conference (OFC), including one "Top Scored" paper
      Date: March 24, 2016
      Awarded to: Toshiaki Koike-Akino, Keisuke Kojima, David S. Millar, Kieran Parsons, Tsuyoshi Yoshida, Takashi Sugihara
      MERL Contacts: Toshiaki Koike-Akino; Keisuke Kojima; David Millar; Kieran Parsons
      Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
      Brief
      • Five papers from the Optical Comms team were presented at the 2016 Optical Fiber Conference (OFC) held in Anaheim, USA in March 2016. The papers relate to enhanced modulation formats, constellation shaping, chromatic dispersion estimation, low complexity adaptive equalization and coding for coherent optical links. The top-scored paper studied optimal selection of coding and modulation sets to jointly maximize nonlinear tolerance and spectral efficiency.
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  • News & Events

    •  NEWS   Mitsubishi Electric Corporation and MERL Press Release Describes New 5G GaN Power Amplifier Technology
      Date: July 14, 2020
      Where: Tokyo, Japan
      MERL Contact: Rui Ma
      Research Areas: Communications, Electronic and Photonic Devices
      Brief
      • Mitsubishi Electric Corporation announced today its developement of a new technology to realize a gallium nitride (GaN) power amplifier module for 5G base-stations that offers a combination of compact (6mm by 10mm) footprint and high power-efficiency, the latter exceeding an unprecedented rating of 43%.

        MERL and Mitsubishi Electric researchers collaborated to develop high density mounting technology and matching circuit that uses a minimum number of chip components to achieve efficient, wide-band power amplification in the 3.4-3.8GHz bands used for 5G communication.

        Please see the link below for the full Mitsubishi Electric press release text. Technical details of the new module will be presented at the IEEE International Microwave Symposium this coming August.
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    •  NEWS   MERL Scientists Presenting 5 Papers at IEEE International Conference on Communications (ICC) 2020
      Date: June 7, 2020 - June 11, 2020
      Where: Dublin, Ireland
      MERL Contacts: Kyeong Jin (K.J.) Kim; Toshiaki Koike-Akino; Ye Wang
      Research Areas: Communications, Machine Learning, Signal Processing, Digital Video
      Brief
      • Due to COVID-19, MERL Network Intelligence Team scientists remotely presented 5 papers at the IEEE International Conference on Communications (ICC) 2020, that was scheduled to be held in Dublin Ireland from June 7-11, 2020. Topics presented include recent advances in deep learning methods for communications and new access systems. Presentation videos are also found on our YouTube channel. Our developed technologies can facilitate a great advancement in broadband virtual conferencing which is required in post-COVID-19 society.

        IEEE ICC is one of the IEEE Communications Society’s two flagship conferences dedicated to driving innovation in nearly every aspect of communications. Each year, more than 2,900 scientific researchers submit proposals for program sessions to be held at the annual conference. The high-quality proposals are selected for the conference program, which includes technical papers, tutorials, workshops and industry sessions designed specifically to advance technologies, systems and infrastructure that are continuing to reshape the world and provide all users with access to an unprecedented spectrum of high-speed, seamless and cost-effective global telecommunications services.
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  • Research Highlights

  • Internships

    • SP1448: Intelligent Coding

      The Signal Processing group at MERL is seeking a highly motivated, qualified individual to join our 3-month internship program of research on applied coding for data science. The ideal candidate is expected to possess an excellent background in channel coding, source coding, information theory, coded modulation design, signal processing, deep learning, quantum computing, and molecular computing.

    • MD1370: Machine Learning based DPD for Power Amplifier

      MERL is looking for a talented intern to work on the next generation Digital-predistortion algorithms for power amplifier linearization such as 5G. The development of a DPD system involves aspects of signal processing and statistical algorithm design, RF components and instrumentation, digital hardware and software. It is therefore both a challenging and intellectually rewarding experience. This will involve MATLAB coding, interfacing to test equipment such as power sources, signal generators and analyzers and construction and calibration of RF component assemblies. The ideal candidate should have knowledge and experience in adaptive signal processing, machine learning, and radio communication. Good practical laboratory skills are needed. RF semiconductor devices and circuit knowledge is a plus. Duration is 3 to 6 months.

    • MD1441: Advanced Phased Array Transceiver

      MERL is looking for a highly motivated, and qualified individual to join our internship program of advanced phased array research. The ideal candidate should be a senior Ph.D. student with rich experience in beam forming technologies. Knowledge of wireless communication, transceiver architecture, and digital signal processing, FPGA and/or Matlab programming skills are required. RF circuits knowledge will be a plus. Duration is 3-6 months with a flexible start date.


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  • Recent Publications

    •  Skvortcov, P., Phillips, I., Forysiak, W., Koike-Akino, T., Kojima, K., Parsons, K., Millar, D.S., "Nonlinearity Tolerant LUT-based Probabilistic Shaping for Extended-Reach Single-Span Links", IEEE Photonics Technology Letters, DOI: 10.1109/LPT.2020.3006737, Vol. 32, No. 16, pp. 967-970, July 2020.
      BibTeX TR2020-107 PDF
      • @article{Skvortcov2020jul,
      • author = {Skvortcov, Pavel and Phillips, Ian and Forysiak, Wladek and Koike-Akino, Toshiaki and Kojima, Keisuke and Parsons, Kieran and Millar, David S.},
      • title = {Nonlinearity Tolerant LUT-based Probabilistic Shaping for Extended-Reach Single-Span Links},
      • journal = {IEEE Photonics Technology Letters},
      • year = 2020,
      • volume = 32,
      • number = 16,
      • pages = {967--970},
      • month = jul,
      • doi = {10.1109/LPT.2020.3006737},
      • issn = {1941-0174},
      • url = {https://www.merl.com/publications/TR2020-107}
      • }
    •  Kim, K.J., Liu, H., Wen, M., Orlik, P.V., Poor, H.V., "Secrecy Performance Analysis of Distributed Asynchronous Cyclic Delay Diversity-Based Cooperative Single Carrier Systems", IEEE Transactions on Communications, June 2020.
      BibTeX TR2020-084 PDF
      • @article{Kim2020jun2,
      • author = {Kim, Kyeong Jin and Liu, Hongwu and Wen, Maiwen and Orlik, Philip V. and Poor, H. Vincent},
      • title = {Secrecy Performance Analysis of Distributed Asynchronous Cyclic Delay Diversity-Based Cooperative Single Carrier Systems},
      • journal = {IEEE Transactions on Communications},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-084}
      • }
    •  Lee, G., Guo, J., Kim, K.J., Orlik, P.V., Ahn, H., Di Cairano, S., Saad, W., "Edge Computing for Interconnected Intersections in Internet of Vehicles", IEEE Intelligent Vehicles Symposium, June 2020.
      BibTeX TR2020-081 PDF
      • @inproceedings{Lee2020jun,
      • author = {Lee, Gilsoo and Guo, Jianlin and Kim, Kyeong Jin and Orlik, Philip V. and Ahn, Heejin and Di Cairano, Stefano and Saad, Walid},
      • title = {Edge Computing for Interconnected Intersections in Internet of Vehicles},
      • booktitle = {IEEE Intelligent Vehicles Symposium},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-081}
      • }
    •  Koike-Akino, T., Wang, Y., "Stochastic Bottleneck: Rateless Auto-Encoder for Flexible Dimensionality Reduction", IEEE International Symposium on Information Theory (ISIT), June 2020.
      BibTeX TR2020-075 PDF Video Presentation
      • @inproceedings{Koike-Akino2020jun,
      • author = {Koike-Akino, Toshiaki and Wang, Ye},
      • title = {Stochastic Bottleneck: Rateless Auto-Encoder for Flexible Dimensionality Reduction},
      • booktitle = {IEEE International Symposium on Information Theory (ISIT)},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-075}
      • }
    •  Komatsuszaki, Y., Ma, R., Sakata, S., Nakatani, K., Shinjo, S., "A Dual-Mode Bias Circuit Enabled GaN Doherty Amplifier Operating in 0.85-2.05GHz and 2.4-4.2GHz", IEEE International Microwave Symposium (IMS), June 2020.
      BibTeX TR2020-080 PDF
      • @inproceedings{Komatsuszaki2020jun,
      • author = {Komatsuszaki, Yuji and Ma, Rui and Sakata, Shuichi and Nakatani, Keigo and Shinjo, Shintaro},
      • title = {A Dual-Mode Bias Circuit Enabled GaN Doherty Amplifier Operating in 0.85-2.05GHz and 2.4-4.2GHz},
      • booktitle = {IEEE International Microwave Symposium (IMS)},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-080}
      • }
    •  Sakata, S., Kato, K., Teranishi, E., Sugitani, T., Ma, R., Chuang, K., Wu, Y., Fukunaga, K., Komatsuszaki, Y., Kenichi, H., Yamanaka, K., Shinjo, S., "A Fully-Integrated GaN Doherty Power Amplifier Module with a Compact Frequency-Dependent Compensation Circuit for 5G massive MIMO Base Stations", IEEE International Microwave Symposium (IMS), June 2020.
      BibTeX TR2020-077 PDF
      • @inproceedings{Sakata2020jun,
      • author = {Sakata, Shuichi and Kato, Katsuya and Teranishi, Eri and Sugitani, Takumi and Ma, Rui and Chuang, Kevin and Wu, Yuchen and Fukunaga, Kei and Komatsuszaki, Yuji and Kenichi, Horiguchi and Yamanaka, Koji and Shinjo, Shintaro},
      • title = {A Fully-Integrated GaN Doherty Power Amplifier Module with a Compact Frequency-Dependent Compensation Circuit for 5G massive MIMO Base Stations},
      • booktitle = {IEEE International Microwave Symposium (IMS)},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-077}
      • }
    •  Sravan Kumar, P., Ma, R., "Design Considerations and FPGA Implementation of a Wideband All-Digital Transmit Beamformer with 50% Fractional Bandwidth", IEEE International Microwave Symposium (IMS), June 2020.
      BibTeX TR2020-078 PDF
      • @inproceedings{SravanKumar2020jun,
      • author = {Sravan Kumar, Pulipati and Ma, Rui},
      • title = {Design Considerations and FPGA Implementation of a Wideband All-Digital Transmit Beamformer with 50% Fractional Bandwidth},
      • booktitle = {IEEE International Microwave Symposium (IMS)},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-078}
      • }
    •  Lei, H., Gao, R., Park, K.-H., Ansari, I.S., Kim, K.J., Alouini, M.-S., "Security Performance Analysis for the Downlink NOMA Systems with Outage Constraint", IEEE International Conference on Communications Workshops (ICC), June 2020.
      BibTeX TR2020-074 PDF
      • @inproceedings{Lei2020jun,
      • author = {Lei, Hongjiang and Gao, Rui and Park, Ki-Hong and Ansari, Imran Shafique and Kim, Kyeong Jin and Alouini, Mohamed-Slim},
      • title = {Security Performance Analysis for the Downlink NOMA Systems with Outage Constraint},
      • booktitle = {IEEE International Conference on Communications Workshops (ICC)},
      • year = 2020,
      • month = jun,
      • url = {https://www.merl.com/publications/TR2020-074}
      • }
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