The Cellular Connection 2 phần 2 pdf

... and the voice from the other end of the connection usually came through a loudspeaker. You couldn’t dial a call; instead the mobile operator at the other end of your radio link established the connection ... you approach the limit of the range of one cell, you will enter another before the quality of service deteriorates. Furthermore, the limited range of cellular tr...

Ngày tải lên: 07/08/2014, 21:20

... 14, 18, 20 22 , 23 24 , 41—45, 52 55, 60, 64—73, 89, 95—96, 101—1 02, 105—106, 113—115, 121 , 122 , 126 , 127 . See also Service provider CDMA, 114, 115, 121 , 122 CDPD, 93, 122 Cell, 4—7, 93, 1 02, 110—111, ... Singapore / Toronto THE CELLULAR CONNECTION HLR, 66 HORN, 52, 125 I IMTS, 3, 4, 121 Installation, 4, 10, 22 , 25 27 , 31, 45, 47, 58, 75, 76, 79, 82, 89, 108, 123 , 1...

Ngày tải lên: 07/08/2014, 21:20

... change the pattern the radio waves propagate from the antenna. Both the cell-site radio and the cellular phone are capable of dynamically adjusting their power level. It can be raised to improve the ... the MSC, or Mobile Switching Center, which links cellphones to established conventional telephone services. The relationship among these is illustrated in Figure 2. 1. THE...

Ngày tải lên: 07/08/2014, 21:20

... sales commissions paid to them by the carrier for cellular subscriptions to ‘‘buy down’’ the retail price of the cellular phone, so that the price of The Cellular Connection: A Guide to Cellular Telephones, ... can multiply their weekday calls by the average call length by 20 weekdays a month, then multiply the percentage of off-peak by the result and add it, for exa...

Ngày tải lên: 07/08/2014, 21:20

... installation, the The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  20 00 John Wiley & Sons, Inc. ISBNs: 0-471-316 52- 0 (Paper); 0-471 -20 340-8 ... places the transceiver close to the antenna, which is usually mounted toward the rear of a vehicle. This proximity allows the length of the cable that connects the...

Ngày tải lên: 07/08/2014, 21:20