Spread spectrum transceiver

Abstract

An assembly of simultaneously transmitted electrically generated signals, which contains a subset of binary spreading-code sequences that are members of a larger set of binary spreading-code sequences available to a particular node of a multi-node communication network. All sequences in the set of spreading-code sequences available to the particular node of the network can be generated by the same configuration of two linear-feedback binary shift registers, where feedback taps of the two linear-feedback binary shift registers correspond to primative polynomials of the same degree over GF(2), the field of two elements.

1 . An assembly of simultaneously transmitted electromagnetic signals, said signals being related to each other in said assembly so as to communicate stored information to a receiver, said signals being generated by modulating selected subsets of a set of shift-register-stored binary spreading-code sequences onto a sinusoidal carrier, at least one subset of said set of binary spreading-code sequences containing more than one of said binary spreading-code sequences, each subset of said set of binary spreading-code sequences embodying a corresponding portion of said information. 
     
     
         2 . An assembly of simultaneously transmitted electromagnetic signals, said signals being related to each other in said assembly so as to communicate stored information within a transmitting node to a receiving node of a communication network, said assembly of signals being produced by a process of:
 a) assigning blocks of bits embodying said stored information to corresponding subsets of a set of shift-register-stored binary spreading-code sequences, at least one of said subsets of said set of binary spreading-code sequences containing more than one of said binary spreading-code sequences; and   b) simultaneously transmitting selected subsets of said set of stored binary spreading-code sequences from said transmitting node to said receiving node.   
     
     
         3 . An assembly of electromagnetic signals, said signals being related to each other in said assembly so as to communicate stored information within a transmitting node to a receiving node of a communication network, said assembly of signals being produced by a process of:
 a) generating a set of binary spreading-code sequences by combining contents stored within specified stages of a first binary shift register with contents stored within specified stages of a second binary shift register, said set of binary spreading-code sequences containing more than one binary spreading-code sequence;   b) assigning blocks of bits embodying said stored information to corresponding subsets of said set of binary spreading-code sequences, each of said subsets of said set of binary spreading-code sequences containing at least one of said binary spreading-code sequences; and   c) transmitting selected subsets of said set of binary spreading-code sequences from said transmitting node to said receiving node.