Patent ID: 7496130

Claim:
A method of predicting a signalling code from an n th order set of orthogonal signalling codes of length 2 n for a communications system, the signalling code corresponding to a code spur, comprising: selecting an odd number of at least three signalling codes from the n th order set of orthogonal signalling codes within a code space; performing an operation on the at least three signalling codes, the operation corresponding to a vector product of the at least three signalling codes, when the at least three signalling codes are expressed in a bipolar form, to predict the signalling code corresponding to the code spur; and identifying signalling codes from the n th order set of orthogonal signalling codes of length 2 n having a lower occurrence of code spurs coinciding with active signalling codes than signalling codes amongst the n th order set of orthogonal signalling codes.