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Song Chong - One of the best experts on this subject based on the ideXlab platform.

  • exception of dominant Interfering Beam low complex Beam scheduling in mmwave networks
    Wireless Communications and Networking Conference, 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

  • WCNC - Exception Of Dominant Interfering Beam: Low Complex Beam Scheduling In Mmwave Networks
    2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

Eunkyung Kim - One of the best experts on this subject based on the ideXlab platform.

  • exception of dominant Interfering Beam low complex Beam scheduling in mmwave networks
    Wireless Communications and Networking Conference, 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

  • WCNC - Exception Of Dominant Interfering Beam: Low Complex Beam Scheduling In Mmwave Networks
    2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

Jeongho Kwak - One of the best experts on this subject based on the ideXlab platform.

  • exception of dominant Interfering Beam low complex Beam scheduling in mmwave networks
    Wireless Communications and Networking Conference, 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

  • WCNC - Exception Of Dominant Interfering Beam: Low Complex Beam Scheduling In Mmwave Networks
    2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
    Co-Authors: Eunkyung Kim, Jeongho Kwak, Song Chong
    Abstract:

    We begin this paper by asking a simple question: All Beams can be simultaneously activated thanks to the ignorable inter-Beam interference and sharp Beam shape in mmWave networks? This paper provides a counter-intuitive observation that interference between one-hop adjacent Beams still significantly affects the network performance in mmWave networks. Leveraging this observation, we revisit an optimization of interBeam scheduling problem in a network-wide mmWave system on top of a physical layer precoding technique and suggest practical and low-complex Beam on/off scheduling and corresponding user scheduling algorithms. Finally, via simulations in a real mmWave network environment, we reveal that the proposed algorithm attains close to the performance of an optimal policy which has much higher computational complexity.

Srikrishna Bhashyam - One of the best experts on this subject based on the ideXlab platform.

  • Hybrid Beamforming in MU-MIMO Using Partial Interfering Beam Feedback
    IEEE Communications Letters, 2020
    Co-Authors: Silpa S. Nair, Srikrishna Bhashyam
    Abstract:

    We propose a hybrid Beamforming scheme with partial Interfering Beam feedback for a codebook-based multi-user multiple-input multiple-output (MU-MIMO) system, where users feed back information only about the top- $p$ transmit Beams. For the analog part of the precoding, we consider two codebooks, the conventional Discrete Fourier Transform (DFT) codebook with uniform amplitude Beamforming vectors and the Taylor codebook with non-uniform amplitude Beamforming vectors. For the digital precoding part, the effective channel matrix is approximated and used for zero-forcing (ZF). We also propose a Beam pairing algorithm that results in reduced inter-Beam interference and simplifies Beam and user selection in MU-MIMO. When $p$ is equal to the number of Beams in the transmit codebook, the proposed scheme includes an existing scheme with full effective channel matrix feedback as a special case. Numerical results show that the proposed hybrid Beamforming performs better than an existing hybrid precoding scheme based on channel reconstruction.

P Forck - One of the best experts on this subject based on the ideXlab platform.

  • non Interfering Beam diagnostic developments
    2004
    Co-Authors: A Peters, P Forck
    Abstract:

    New high power proton and heavy ion LINAC projects are a big challenge for Beam diagnostic developments. Due to the high inherent Beam power mostly all destructive measurement techniques are not applicable. Thus a lot of Beam diagnostic developments are under way from enhancements of well-known systems like current transformers to new designs for profile or bunch length measurements using e.g. the interaction of the high power Beams with the residual gas in the LINACs. The latest progress in this field will be reviewed with descriptions of some remarkable solutions.