Complete complementary code composed of n-multiple-shift orthogonal sequences,” Trans

Abstract — A complete complementary code composed of 4-phase perfect (orthogonal) sequences is shown. The sequences compose a matrix whose cube is a unit matrix. A method is also discussed, which has been proposed by Suehiro, et.al. for increasing the efficiency of the wireless fre-quency usage. The method uses a pilot signal for measuring the multipath property as a complex number for each timeslot. The data transmission signals transmitted together with the pilot signal using the same frequency and time without interference. The signals with zero-autocorrelation zone and zero-crosscorrelation zone (ZCZ signals) are made based on the complete complementary code and used for above method. I