Title :
Generalized Pairwise Z-Complementary Codes
Author :
Feng, Lifang ; Fan, Pingzhi ; Tang, Xiaohu ; Loo, Kok-Keong
Author_Institution :
Provincial Key Lab. of Inf. Coding & Transm., Southwest Jiaotong Univ., Chengdu
fDate :
6/30/1905 12:00:00 AM
Abstract :
An approach to generate generalized pairwise Z-complementary (GPZ) codes, which works in pairs in order to offer a zero correlation zone (ZCZ) in the vicinity of zero phase shift and fit extremely well in power efficient quadrature carrier modems, is introduced in this letter. Each GPZ code has MK sequences, each of length 4NK, where M is the number of Z-complementary mates, K is a factor to perform Walsh-Hadamard expansions, and N is the sequence length of the Z-complementary code. The proposed GPZ codes include the generalized pairwise complementary (GPC) codes as special cases.
Keywords :
Hadamard codes; Walsh functions; correlation methods; orthogonal codes; sequences; MK sequence; Walsh-Hadamard expansion; generalized pairwise Z-complementary codes; orthogonal sequence set; power efficient quadrature carrier modem; zero correlation zone; zero phase shift; Autocorrelation; Design engineering; Interference; Mobile communication; Modems; Multiaccess communication; Phase shift keying; Power generation; Radar applications; Research and development; Generalized pairwise complementary codes; Z-complementary codes; zero correlation zone;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2008.919997
