Spread spectrum systems / direct frequency hopping coherent and non-coherent sequence with high power efficiency and bandwidth and method for them

摘要

A spread spectrum system hybrid (10) comprising: a signal combiner (14) for receiving a plurality of signals coded data espectroensanchado direct sequence ((if (t)) and forming a plurality of combined signals, characterized by : a first set of mixers (15a, 15b) for receiving the plurality of combined signals and carriers leasttwo, and forming at least one signal constant envelope two carriers, a second set of mixers (15c, 15d) to receive the less carrier signal constant envelope fingers and a jump signal transmitter and form a spread spectrum signal hybrid, ylas combined signals include where if (t) are three data signals coded spread separate spectrum, the two carriers include and, wherein the first carrier is modulated mediantey the second carrier is modulated medianteyla jump signal transmitter includes a tone sequence having i) hard tion Tc, where Tc is the duration of a chip, and ii) frequency taken from a set of values ​​2k, where k is a number of bits unasecuencia pseudo random noise, PRN; and the second set of mixer includes an adder for adding signals to form the spread-spectrum signal hybrid.