Patent ID: 6882679

Claim:
A method of direct sequence spread spectrum modulation comprising the steps of: (a) segmenting a serial bit stream into at least two successive bit segments comprising a plurality of data bits; (b) selecting a first modulation codeword phase parameter as a function of a first plurality of at least four bit values of a bit segment and a sequential order of said bit segment in said succession of bit segments; (c) selecting a second modulation codeword phase parameter as a function of a second plurality of at least four bit values of said bit segment; (d) selecting a third modulation codeword phase parameter as a function of a third plurality of at least four bit values of said bit segment; (e) selecting a fourth modulation codeword phase parameter as a function of a fourth plurality of at least four bit values of said bit segment; and (f) generating said modulation codeword as a function of said first, said second, said third, and said fourth phase parameters.