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GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
These numbers come from Newzoo's Global Mobile Market Report 2018. [ 5] By total number of smartphone users, "China by far has the most, boasting 783 million users. India took the #2 spot with 375 million users (less than half of China’s number). However, that gap will decrease by 2021, when we expect India to have 601 million smartphone users.
Economic relations. The United States is one of India's largest direct investors. From 1991 to 2004, the stock of FDI inflow has increased from US$11 million to $344.4 million, and totaling $4.13 billion. This is a compound rate increase of 57.5 percent annually.
List of countries and territories by motor vehicles per capita. China became the world's largest new car market in 2009. Countries and territories listed by the number of road motor vehicles per 1,000 inhabitants are as follows. Motor vehicles include cars, vans, buses, freight, and other trucks, but not two-wheelers. [citation needed]
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This list ranks the countries of the world by the number of mobile phone numbers in use. Note that it is not the number of phone devices that are being given here, but the number of phone numbers in a country. In some countries, one person might have two mobile phones. Also, some mobile phone numbers may be used by machines as a modem (examples ...
Yes, unlimited calls from U.S. or Puerto Rico to up to 15 int'l landlines; unlimited calls to up to 15 mobile #s in Canada, China, India, and Mexico; int'l texting to Mexico only; and voice + data roaming in Mexico [487] [489]
The global literacy rate for all males is 90.0%, and the rate for all females is 82.7%. The rate varies throughout the world, with developed nations having a rate of 99.2% (2013), South and West Asia having 70.2% (2015), and sub-Saharan Africa at 64.0% (2015). [ 1] Over 75% of the world's 781 million illiterate adults are found in South Asia ...