• Optimal precoder designs for sum rate maximization in MIMO multiuser multicells

    Optimal precoder designs for sum rate maximization in MIMO multiuser multicells

    This paper is concerned with the joint linear precoder design problem for the multiuser multiple-input multiple-output (MIMO) heterogeneous networks (HetNets) in which multiple femto base stations (FBSs) coexist with a macro base station (MBS).

     10 p vaa 30/04/2018 262 1

  • On the performance of cooperative cognitive networks with selection combining and proactive relay selection

    On the performance of cooperative cognitive networks with selection combining and proactive relay selection

    This paper proposes an outage analysis framework for cooperative cognitive networks with proactive relay selection and selection combining (SC) under licensed outage constraint, maximum transmit power constraint, independent non-identical (i.n.i) fading distributions, erroneous channel information, and licensed users’ interference.

     10 p vaa 30/04/2018 261 1

  • Results and comparision between different control algorithms for a quadrotor using ArduPilot framework

    Results and comparision between different control algorithms for a quadrotor using ArduPilot framework

    This article presents a simple way to test the behavior of various control algorithms, with the quadrotor as the control target and ArduPilot is the framework to create the firmware carrying multi controllers.

     9 p vaa 30/04/2018 238 1

  • Hybrid beamforming for 5G millimeter-wave multi-cell networks

    Hybrid beamforming for 5G millimeter-wave multi-cell networks

    Multi-cell wireless systems usually suffer both intracell and inter-cell interference, which can be mitigated via coordinated multipoint (CoMP) techniques. Previous works on multi-cell analysis for the microwave band generally consider fully digital beamforming that requires a complete radio-frequency chain behind each antenna, which is less practical for millimeterwave (mmWave) systems where large amounts of antennas are necessary to provide...

     8 p vaa 30/03/2020 102 1

  • Hybrid beamforming for millimeter wave systems using the MMSE criterion

    Hybrid beamforming for millimeter wave systems using the MMSE criterion

    Hybrid analog and digital beamforming (HBF) has recently emerged as an attractive technique for millimeter-wave (mmWave) communication systems. It well balances the deman d for sufficient beamforming gains to overcome the propagatio n loss and the desire to reduce the hardware cost and power consumption. In this paper, the mean square error (MSE) is chosen as the performance metric to characterize the transmission reliability. Using the...

     15 p vaa 30/03/2020 101 1

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