Derivation of length extension formulas for complementary sets of sequences using orthogonal filterbanks
Çağatay Candan · Electronics Letters · 2006
A method for the construction of complementary sets of sequences using polyphase representation of orthogonal filterbanks is presented. It is shown that the case of two-channel filterbanks unifies individually derived length extension formulas for complementary sequences into a common framework and the general M-channel case produces novel formulas for the extension of complementary sets of sequences. The presented technique can also be used to generate polyphase and multi-level sequences.