Patent ID: 7580472

Claim:
An apparatus for generating a set of sequences of ternary signals wherein each multi-value signal can assume one of three states, comprising: a first sequence generator that can generate a first sequence of ternary signals wherein each multi-value signal can assume one of 3 states on an output of the first sequence generator; a second sequence generator that can generate a set of 3 p −1 with p>1 different but related second sequences of ternary signals wherein each multi-value signal can assume one of 3 states on an output of the second sequence generator wherein each different sequence is formed by phase shifting each element of the previous sequence by one position in a circular fashion; a first ternary logic device having a first input connected to the output of the first sequence generator and a second input connected to the output of the second sequence generator; wherein a set of 3 p −1 different ternary Gold sequences is generated on an output of the first ternary logic device, the set of ternary Gold sequences characterized by: an auto-correlation with a single peak value on the coinciding phase of the correlation between the generated ternary sequence and a phase shifted copy of itself and a correlation value that is limited to a lower maximum and minimum value in all other phases; a cross-correlation value between each of the generated sequences that is limited to a maximum and minimum value that is lower than the peak value of the auto-correlation of each individual sequence; and a correlation value between two ternary signals being determined by including a step of adding a first value to a sum whenever the two ternary signals are determined to be equal.