Patent ID: 7372891

Claim:
A method of generating a single sideband spread spectrum signal, said method comprising: i) generating a complex spreading signal, in which the complex spreading signal is derived from a sequence defined by the equation α m = W N m 2 / 2 + qm N ⁢ ⁢ even = W N m ⁡ ( m + 1 ) / 2 + qm N ⁢ ⁢ odd where W N =e −i2πr/N m=0, 1, 2, . . . , N−1, q is any integer and the number of sequences of a given length is N and r is an integer relatively prime to N, ii) phase-shifting the complex spreading signal in accordance with a Hilbert transform to produce a phase-shifted complex spreading signal; iii) upconverting the complex spreading signal and the phase-shifted complex spreading signal to a higher frequency to produce the single sideband spread spectrum signal; iv) bandlimiting at least one of the complex spreading signal or the single sideband spread spectrum signal; and v) modulating one of the complex spreading signal or the single sideband spread spectrum signal with an input data signal, wherein the order in which steps iv) and v) are performed is immaterial.