- Arts & Culture 6205
- Business & Economics 676
- Computers 329
- Dictionaries & Encyclopedias 70
- Education & Science 76906
- Abstracts 73
- Astrology 4
- Biology 8
- Chemistry 3979
- Coursework 15556
- Culture 8
- Diplomas 316
- Drawings 1596
- Ecology 5
- Economy 81
- English 80
- Ethics, Aesthetics 3
- For Education Students 17651
- Foreign Languages 11
- Geography 3
- Geology 1
- History 88
- Maps & Atlases 5
- Mathematics 12624
- Musical Literature 2
- Pedagogics 19
- Philosophy 22
- Physics 15120
- Political Science 5
- Practical Work 59
- Psychology 65
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sociology 9
- Summaries, Cribs 87
- Test Answers 160
- Tests 8753
- Textbooks for Colleges and Universities 32
- Theses 7
- To Help Graduate Students 14
- To Help the Entrant 38
- Vetting 382
- Works 13
- Информатика 8
- Engineering 872
- Fiction 708
- House, Family & Entertainment 84
- Law 133
- Website Promotion 70
Modernization of radio communication equipment of the "Altai-3M"
Content: my_diplom.rar 999,24 kB
Product description
Special part: "Calculation of the trunk and the choice of channel telephone tract"
This project contains unique information taken directly from documents apply to equipment manufacturers. Also, at the time the author spent much of his time searching for and processing the necessary information in the Internet.
PP contains all the necessary drawings vypolnennyev proramma Compass 3D LT, and also referred to in text form, if necessary remarks on the protection of the DP.
For a long time the only kind of public mobile in the former USSR was radio-telephone "Altai". Even in 1994, it operated a network of 120 cities, the number of subscribers sostavi.la 53% of the total number of mobile park in Russia.
Additional information
TABLE OF contentS
Введение…………………………………………………………………………….12
1. General .............................................................................. .... 17
1.1. Brief description of radio communication equipment operating at предприятии…………………………………………………………………….18
1.1.1. Dispatch radio system ............................................. ... 18
1.1.2. Microwave Communication ............................................................... .... 22
1.1.3. Radiotelephone system with a large public area обслуживания………………………………………………………………….23
1.2. Radiotelephone system "Altai-3M" ................................. .... 27
1.2.1. Historical information about the radiotelephone system
"Altai-3M" .............................................................................. 27
1.2.2. Technical data of the "Altai-3M" ................................. ..... 28
1.2.3. Design and operation of the "Altai-3M" .................................... 32
1.2.4. Transceiver equipment CA ....................................... .... 35
1.2.5. Antenna feeders SDLC .......................................... ..36
1.2.6. Switching equipment central station ..................... .... 39
1.3. Description of the graphic ......................................................... .47
2. Analytical review ..................................................................... 48
2.1. Justification upgrading switching equipment
«Алтай-3М»…………………………………………………………………………49
2.1.1. Switching equipment standard "Altai"
Ltd. «КомпанияСиТи»…………………………………………………………......54
2.1.2. Switching equipment firm "INSTALL" ........................... 56
2.1.3. EWSD switching equipment firm Siemens ............ ... 59
2.1.4. Switching equipment "Quantum-E" firm
"Quantum Intercom" ........................................................................... ..62
3.1. Special part ..................................................................... ... 68
3.1. Calculation of parameters of a trunk and a choice of channel telephone tract ...................................................... ..69
3.1.1. Calculation of the primary and secondary transmission parameter
chains of communication cables .................................................................. ... 71
3.1.1.1. Calculation of resistance ............................................. ...... 71
3.1.1.2. Inductance calculation circuit ...................................................... ... 73
3.1.1.3. Calculation of capacitance circuits of communication lines ............................................. ... 74
3.1.1.4. The calculation of the attenuation coefficient ................................................ ... 75
3.1.1.5. Calculation of wave resistance ................................................ ..76
3.2. The calculation of the maximum distance (range) between the central station and mobile subscriber station system "Altai-3M" ......... ..80
4. The economic part .................................................................. ....... 85
4.1. Calculation of economic indicators ................................................ .... 86
4.1.1. Capital costs ............................................................... .... 86
4.1.2. Annual operating expenses .......................................... ...... 88
4.2. Operating income ................................................... .91
4.3. Profits from the sale of services ......................................................... .92
4.4. Payback period ........................................................................ .92
4.5. Рентабельность……………………………………………………………….....94
5. Safety and environmental project ............................................. ..... 96
5.1. Security Project ..................................................
Feedback
0| Period | |||
| 1 month | 3 months | 12 months | |
| 0 | 0 | 0 | |
| 0 | 0 | 0 | |