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Single-sideband Suppressed-carrier Transmission
In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation used to transmit information, such as an audio signal, by radio waves. A refinement of amplitude modulation, it uses transmitter electric power, power and bandwidth (signal processing), bandwidth more efficiently. Amplitude modulation produces an output signal the bandwidth of which is twice the maximum frequency of the original baseband signal. Single-sideband modulation avoids this bandwidth increase, and the power wasted on a carrier, at the cost of increased device complexity and more difficult tuning at the receiver. Basic concept Radio transmitters work by mixing a radio frequency (RF) signal of a specific frequency, the carrier wave, with the audio signal to be broadcast. In AM transmitters this mixing usually takes place in the final RF amplifier (high level modulation). It is less common and much less efficient to do the mixing at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SSB Bandform
SSB may refer to: Organizations * Scandinavian School of Brussels * Social Security Board (other) * , the Society of Saint Bridget * Society of the Sisters of Bethany, an Anglican order of sisters * Society of Systematic Biologists * , a former public transport operator in Switzerland * Statistics Norway ( no, Statistisk sentralbyrå, links=no), a Norwegian government statistics bureau * , a public transport operator in Germany * Sustainable South Bronx, an environmental justice organization * Swedish School Beijing, a former international school in China (1994–2015) Military * Presidency of Defense Industries ( tr, Savunma Sanayii Başkanlığı, links=no) of Turkey * , an Indian paramilitary force, formerly called Special Service Bureau * Secret Service Bureau, of the United Kingdom, now called the Secret Intelligence Service * Services Selection Board, for the selection of candidates in officer cadre of Indian Armed Forces * Special Service Battalion, a South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
