Kasami code

Kasami sequences are binary sequences of length 2N where N is an even integer. Kasami sequences have good cross-correlation values approaching the Welch lower bound. There are two classes of Kasami sequences - the small set and the large set.

The small set

The process of generating a Kasami sequence starts by generating a PN sequence s(n), n=1..2N-1;

References

• T. Kasami, \Weight Distribution Formula for Some Class of Cyclic Codes," Tech. Report No. R-285, Univ. of Illinois, 1966.
• L. Welch, “Lower Bounds on the Maximum Cross Correlation of Signals,” IEEE Trans. on Info. Theory, vol. 20, no. 3, pp. 397–399, May 1974.