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As a major infrastructure and public utility industry involving the national economy and the people's livelihood, the state has always attached great importance to the in
The era of 5G is coming soon, and now online is rumored that 2G networks will also face retreat. 2G is already an old antique, but one of the techno
I. Project Overview 1.1 Introduction Today's greenhouse greenhouse industry
With the improvement of people's living standards, cars have gradually entered the family, and the r
51 MCU and GSM module to achieve communication 1, check the quality of the serial line 1) Plug the serial cable into the computer and short the 2
51 MCU and GSM module to achieve communication 1, check the quality of the serial line 1) Plug the serial cable
introduction: The SoPC-based automotive safety monitoring system uses Altera's latest SoPC (Programmable System-on-Chip) solution, the Nios processor soft core, t
introduction: SMS (Short Message Service) short message service is an application service for sending and receiving text information between a GSM terminal (mobile ph
If you travel a lot, are you used to the unreasonable mobile roaming charges? However, mobile phones are sometimes absolutely necessary – we have to pay for mobile roaming
1 Introduction With the development and popularization of social information technology, the automation level of industrial process control is gettin
0 Preface The residual current action protector is an important protection device in the low-voltage power grid. The real-time status monitoring of t
introduction At present, urban security systems are getting more and more people's attention, and customers' requirements for the function an
1 Electromagnetic compatibility (EMC) Definition EMC performance is expressed as the size of a device or unit and other devices or units within a cer
1: What is GPRS GSM? At present, the second
The proportion of small and medium-sized cities in China has reached 60% to 70%. The scale of GSM network users also has an absolute advantage. The
Under the circumstances that people's awareness of environmental protection is increasing and the construction regulations of base stations are still not perfect, the mos
1 Introduction The operating frequency band of the A-band IS95A-CDMA is: uplink: 825-835MHz; downlink: 860-880MHz. The operating frequency band o
Firstly, the main interference types of WCDMA and GSM system co-sites are analyzed. The mathematical calculation models of various interferences are
Most of the commercial deployments of TD-LTE in the world have adopted the construction method of co-station with th
A multi-mode wideband low noise amplifier (LNA) suitable for base station GSM was designed by using ADSP software from Agilent's ADS software by selecting AT41486 transis
0 Preface With the advent of the new era, the automobile has also developed rapidly as an important means of transportation. At the same time, the subsequent car theft has also increased
With the advancement of urbanization, the role of street lamps in people's lives has become more and more prominent, and it also reflects the development level of a city. The power consumption
With the advancement and popularity of cable TV technology, the inherent shortcomings of wireless TV transmission have caused the technology research to be at a standstill. Due to the relatively
Overview The complexity and high density of cellular telephone circuits present a challenge for system designers, and establishing a high-quality audio recording/playback channe
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.