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Definition of "Frequency Hopping Spread Spectrum" |
Frequency Hopping Spread Spectrum is a category of spread spectrum modulation in which each bit of data is divided into chips and each chip is represented by a different spectral component or tone in the spread spectrum band using a pseudorandom sequence to assign tones. / It means a telephone available to the general public, for the use of which the means of payment may include coins and/or credit/debit cards and/or pre-payment cards, including cards for use with dialling codes. |
Definition of "Frequency-Hopping Spread Spectrum" |
Frequency-hopping spread spectrum is one of two basic modulation techniques used in spread spectrum signal transmission. It is the repeated switching of frequencies during radio transmission, often to minimize the effectiveness of "electronic warfare" - that is, the unauthorized interception or jamming of telecommunication. It also is known as frequency- hopping code division multiple access. / In communications systems that use star topologies, the return channel also reverse channel, back channel or return link is the transmission link from a user terminal to the central hub. |
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