FHSS Concept

FHSS (Frequency-Hopping Spread Spectrum)
Under the simultaneous and syncronization circumstance, specific narrowband carrier of the two receiving ends is used for transmitting signals. The signals of FHSS can be specially designed to prevent noise or the one-to-many non-repeating channel. The hopping spread spectrum is to utilize spread code sequence to conduct frequency shift keying modulation to make carrier frequency frequently hop and spread. The hopping frequency in FHSS may be more than dozens or up to one thousand. The transmitted information undertakes selective control with these spreading codes groups to hop and change in transmission. In the receiving end, there is the same local generator as the sending end to generate the same spreading codes to be demodulated, then be decoded to correctly recover the original information.