Mobile system

This paper proposes an output-capacitorless low-dropout regulator (OCL-LDO) with simple structure and fast load transient response for system-on-chip applications. The proposed OCL-LDO does not require output capacitance and remains stable at no-load condition.

10p viengfa 28-10-2024 2 1   Download

This study proposes an improved optimization algorithm, combining a chaotic search function and the Runge Kutta optimizer, to address the optimal power dispatch problem for EVCS integrated with Vehicle-to-Grid technology in Distribution Networks featuring Distributed Generation and Battery Energy Storage Systems.

11p viaburame 14-03-2025 3 1   Download

This paper presents an enhanced teleoperation system and visual-force feedback with obstacle avoidance for a Car-like mobile robot. The proposed system includes a local station, a remote station, and a communication channel.

11p viinuzuka 28-02-2025 8 1   Download

Control and navigation systems are two critical issues in autonomous mobile robot control. In this paper, the Robot Operating System (ROS) is studied. ROS is a free and opensource platform, supported by large communities.

5p viyamanaka 06-02-2025 5 2   Download

Câu 1 Nội dung câu hỏi GSM là viết tắt của A. Global System for Mobile Technology B. Global System for Mobile Communications C. Global Shared Memory D. General System for Mobile Communications Tần số làm việc của hệ thống GSM là: a) 800 và 1800 Mhz b) 800, 900, 1800 và 1900 Mhz c) 900, 1800, 1900 Mhz d) 900, 1800

24p phanconglai 13-10-2012 668 178   Download

Vào cuối những năm 1940, lần đầu tiên dịch vụ điện thoại qua sóng radio được giới thiệu, và đã được thiết kế cho người dùng trong những chiếc xe ôtô tới các mạng điện thoại viễn thông công cộng. Sau đó, vào thập niên 60, một hệ thống bởi Bell Systems được ra mắt, gọi là IMTS, hay " Improved Mobile Telephone Service", . Then, in the 60’s, a system launched by Bell Systems, called IMTS, or, “Improved Mobile Telephone Service", mang lại khá nhiều cải tiến như quay số trực tiếp và băng thông rộng hơn....

32p ctxn52 27-09-2013 123 17   Download

A bit (binary digit) is the smallest unit of information • N = 2n where N is the number of representations and n is the number of bits (ex. ASCII, Unicode, PCM code etc.) • Data communications transfer information using codes that are transmitted as signals (either analog or digital) • In general, analog lines provide a slow service that contains high error rates.

59p trungkiendt9 24-04-2011 102 18   Download

The Distribution system interconnects multiple BSSs. 802.11 standard logically separates the wireless medium from the distribution system – it does not preclude, nor demand, that the multiple media be same or different. An Access Point (AP) is a STA that provides access to the DS by providing DS services in addition to acting as a STA.

100p nammo0168 15-05-2011 126 33   Download

The AMS(R)S provides voice and data connectivity to users such as air traffic controllers, pilots and aircraft operators The AMSS comprises satellites, aeronautical earth stations (AESs), ground earth stations (GESs) and associated ground facilities such as a network coordination center. 7 Existing satellite systems in operation for aeronautical communications Inmatsat, MTSAT Iridium

30p hanampro91 10-05-2013 79 9   Download

High Frequency Data Link, or HFDL, is part of ARINC’s GLOBALink end-to-end communication system The HFDL system is a segment of the Aircraft Communications Addressing and Reporting System (ACARS) used to exchange Airline Operational Control (AOC) and Air Traffic Control (ATS) messagesbetween aircraft end systems and corresponding ground-based stations. GLOBALink/HF provides HF-based, air-to-ground digital communications with aircraft using ARINC 635 protocol. The HFDL system uses the principles of geographic diversity and frequency diversity to optimize HF propagation...

35p hanampro91 10-05-2013 68 4   Download

A PLMN can be regarded as an independent telecommunications entity. ▪ A PLMN is defined as: ▫ One or more switches with: ▫ Switches act as the interface to ▪ a common numbering plan ▪ a common routing plan external networks ▪ The PLMN can be separated into ▫ Core Network ▫ Access Network

359p donghoadequan 27-07-2013 78 7   Download

Chương 3 giới thiệu một số hệ thống điện thoại di động như: Các hệ thống điện thoại di động thế hệ thứ nhất (Hệ thống điện thoại di động kỹ thuật tương tự, Advanced Mobile Phone System), các hệ thống điện thoại di động thế hệ thứ hai (Global System for Mobile Communication). Mời các bạn cùng tham khảo để nắm bắt các nội dung chi tiết.

52p namthangtinhlang_04 15-11-2015 162 36   Download

Chương 3 giới thiệu về các hệ thống điện thoại di động. Trong chương này, người học sẽ tập trung tìm hiểu hai hệ thống điện thoại di động, đó là các hệ thống điện thoại di động thế hệ thứ nhất và các hệ thống điện thoại di động thế hệ thứ hai. Mời các bạn cùng tham khảo để biết thêm nội dung chi tiết.

53p kiepnaybinhyen_04 15-12-2015 116 11   Download

Bài 10: Ví dụ về hệ thống nhúng mobile robot. Những nội dung chính trong chương này gồm có: Mobile robot, sơ đồ khối mobile robot (e-punk), tổng quan về e-punk, kết cấu cơ khí, mạch điện tử, thiết kế layout (PCB 4 lớp), DSP và các biến thể,... Mời các bạn cùng tham khảo.

23p lovebychance03 13-07-2021 54 9   Download

In this thesis, focus on the wireless links between devices equipped by deployed operating personnel and intermediary access point infrastructure. We use multi-radio (MR) platforms, wireless devices with multiple and diverse transceiver technologies, to produce robust and reliable links through adaptive control of available transceivers. Primarily, we study the application of intelligent control techniques, namely reinforcement learning (RL), for adaptive control over diverse transceivers to achieve the desired robustness and reliability under dynamic environmental conditions.

185p runthenight04 02-02-2023 11 2   Download

This project is focused on studying the biological effects of low-power RF radiation on the expression and function of mechanosensitive ion channel protein (Piezo-1). To evaluate the effects of long-term exposures, cells were exposed at the frequency of 1800 MHz and power of 17 dBm for a period of 2 and 4 hrs using the transverse electromagnetic (TEM) cell exposure system. To study the effects of short-term RF radiation (10 min), exposures emitted from the mobile phone headset at the frequency of 845 MHz and powers of -15 dBm and -5 dBm were applied to cell cultures.

141p runthenight04 02-02-2023 17 3   Download

Modelling the diffusion of mobile commerce in a country is a difficult task due to the non-linear, complex and uncertain nature of its operating environment. Conventional analytical techniques are of limited use in this context, and a System Dynamics approach is more appropriate to model such a complex system.

295p runthenight04 02-02-2023 12 3   Download

Overall objective: Based on the proposed theoretical basis, the thesis analyzes the current situation and from that proposes solutions for investment capital for marine economic development in the South Central region in the coming time.

27p themeg 02-06-2021 67 4   Download

Researching methods of controlling pan-tilt tracking moving target using image information from 2 cameras with many uncertain parameters. Developing algorithms for controlling integrated system include mobile robot, pan-tilt and two cameras tracking moving targets.

27p gaocaolon6 30-07-2020 88 4   Download

This paper explores the effect of cloud based mobile learning on education competencies of engineering students.

8p lucastanguyen 01-06-2020 30 2   Download