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Hicap
Hicap is a mobile technology developed by Nippon Telegraph and Telephone as a higher capacity alternative to their NTT mobile solution. Hicap uses a 25 kHz carrier and uses FDMA Frequency-division multiple access (FDMA) is a channel access method used in some multiple-access protocols. FDMA allows multiple users to send data through a single communication channel, such as a coaxial cable or microwave beam, by dividing ... to separate different calls from each other. External links *http://www.mobileworld.org/analog_about.html Mobile radio telephone systems {{wireless-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nippon Telegraph And Telephone
, commonly known as NTT, is a Japanese telecommunications company headquartered in Tokyo, Japan. Ranked 55th in Fortune Global 500, ''Fortune'' Global 500, NTT is the fourth largest telecommunications company in the world in terms of revenue, as well as the third largest publicly traded company in Japan after Toyota and Sony, as of June 2022. The company is incorporated pursuant to the NTT Law (). The purpose of the company defined by the law is to own all the shares issued by Nippon Telegraph and Telephone East Corporation (NTT East) and Nippon Telegraph and Telephone West Corporation (NTT West) and to ensure proper and stable provision of telecommunications services all over Japan including remote rural areas by these companies as well as to conduct research relating to the telecommunications technologies that will form the foundation for telecommunications. On 1 July 2019, NTT Corporation launched NTT Ltd., an $11 billion de facto holding company business consisting of 28 brand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NTT Mobile Solution
NTT may refer to: * National Native Title Tribunal (NTT), Australian government instrumentality * NATO countries, as per NATO country code * New Technology Telescope, a 3.6m telescope at La Silla Observatory, Chile * New Technology Train, a series of the New York City Subway made from 1999 onwards * New trade theory, an economic theory * Niuatoputapu Airport, IATA code * Nippon Telegraph and Telephone (NTT), a Japanese telecommunications company * Nottinghamshire, county in England, Chapman code * NTT Docomo, a mobile phone operator, subsidiary of NTT founded in 1991 * NTT Ltd., a global technology and services provider, subsidiary of NTT founded in 2019 * Number theoretic transform, a mathematical transform * East Nusa Tenggara, a province of Indonesia known as Nusa Tenggara Timur in Indonesian language. * non-traditional tincture (heraldry) Tincture is the limited palette of colours and patterns used in heraldry. The need to define, depict, and correctly blazon the various tin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FDMA
Frequency-division multiple access (FDMA) is a channel access method used in some multiple-access protocols. FDMA allows multiple users to send data through a single communication channel, such as a coaxial cable or microwave beam, by dividing the bandwidth of the channel into separate non-overlapping frequency sub-channels and allocating each sub-channel to a separate user. Users can send data through a subchannel by modulating it on a carrier wave at the subchannel's frequency. It is used in satellite communication systems and telephone trunklines. FDMA splits the total bandwidth into multiple channels. Each ground station on the earth is allocated a particular frequency group (or a range of frequencies). Within each group, the ground station can allocate different frequencies to individual channels, which are used by different stations connected to that ground station. Before the transmission begins, the transmitting ground station looks for an empty channel within the freq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
