• 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 10 1

  • Lecture Digital signal processing: Lecture 6 - Zheng-Hua Tan

    Lecture Digital signal processing: Lecture 6 - Zheng-Hua Tan

    Lecture 6 - System structures for implementation presents the following content: Block diagram representation of computational structures, signal flow graph description, basic structures for IIR systems, transposed forms, basic structures for FIR systems.

     21 p vaa 30/05/2018 203 1

  • Giáo trình Face2face pre-intermediate workbook: Phần 1

    Giáo trình Face2face pre-intermediate workbook: Phần 1

    Face2face là giáo trình tiếng Anh có nhiều cấp độ thích hợp cho từng đối tượng học khác nhau. Face2face pre-intermediate workbook là giáo trình học tiếng Anh của trình độ tiền trung cấp. Điều tuyệt vời khi học cuốn này là các bài tập đưa ra cực kỳ bổ ích và thú vị giúp các bạn không bị nhàm chán khi làm bài tập. Trong phần 1 này, giáo trình giới...

     45 p vaa 26/09/2018 190 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 8 1

  • Lecture Digital signal processing: Lecture 3 - Zheng-Hua Tan

    Lecture Digital signal processing: Lecture 3 - Zheng-Hua Tan

    Chapter 3 introduce the z-transform. This chapter presents the following content: z-transform, properties of the ROC, inverse z-transform, properties of z-transform.

     20 p vaa 30/05/2018 195 1

  • Giáo trình Face2face elementary student's book: Phần 2

    Giáo trình Face2face elementary student's book: Phần 2

    Face2face được chia ra theo từng mức độ phù hợp với tất cả các đối tượng người học. Face2face elementary student's book là giáo trình học tiếng Anh cho người học ở trình độ sơ cấp, không chỉ giao tiếp, giáo trình này còn rèn luyện tích hợp các kỹ năng cho người học. Trong phần 2 này, giáo trình giới thiệu đến các bạn những bài học về nhiều...

     110 p vaa 26/09/2018 232 1

  • The significance of stock management to jet fuel supply using partial least squares

    The significance of stock management to jet fuel supply using partial least squares

    Operational and commercial efficiency at a jet fuel depot are vital indices for a jet fuel marketer toward ensuring maximum business productivity. In Nigeria, jet A-1 aviation fuel scarcity is a yearly challenge that periodically triggers jet fuel price increase, air fare price hike and flight cancellation. The causes of the scarcity have been ascribed to the challenges facing jet fuel supply process. In this study, the significance of each of...

     7 p vaa 26/05/2020 59 1

  • Ebook Vietnam tourism occupational standards – Food and beverage service: Part 2

    Ebook Vietnam tourism occupational standards – Food and beverage service: Part 2

    Vietnam tourism occupational standards – Food and beverage service consists of a range of units of competence that specify particular skills, knowledge and behaviours/attitudes necessary to fulfil the job requirements satisfactorily. Each job will consist of a blend of functional, core and generic units.

     104 p vaa 03/01/2017 232 1

  • Lecture Signal processing: The discrete fourier transform - Nguyễn Công Phương

    Lecture Signal processing: The discrete fourier transform - Nguyễn Công Phương

    Lecture Signal processing: The discrete fourier transform include all of the following content: Computational fourier analysis, the discrete fourier transform, sampling the discrete – time fourier transform, properties of the discrete fourier transform,... and another content.

     123 p vaa 30/05/2018 223 1

  • Design and installation of vibration testing system for spring mounted model of wing

    Design and installation of vibration testing system for spring mounted model of wing

    This paper presents the design and installation of measuring vibration system in wind tunnel area 1m x 1m. The theoretical analysis of the spring structure in this model help we possible to design a system for wind tunnel by yourself with suitable area, wind speed as well as survey wing model to obtain results desire.

     9 p vaa 22/11/2018 128 1

  • Ebook English for cabin crew (Express series): Part 2

    Ebook English for cabin crew (Express series): Part 2

    Ebook English for cabin crew (Express series): Part 2 present content safety and emergencies, and descent, landing, and layover. Invite you to refer to the ebook for detailed knowledge content.

     53 p vaa 28/07/2020 25 1

  • Ebook Vietnam tourism occupational standards – Food and beverage service: Part 1

    Ebook Vietnam tourism occupational standards – Food and beverage service: Part 1

    The Vietnam tourism occupational standards (VTOS) for Food and beverage service cover all F&B jobs at five levels from waiter (Level 1) to Restaurant Manager (Level 4) and F&B Director (Level 5). The VTOS F&B Service standards have also taken account of local hotel operations.

     88 p vaa 03/01/2017 261 1

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