Title :
Mutually orthogonal ZCZ polyphase sequence sets
Author_Institution :
Dept. of Inf. Eng., Chongqing Commun. Inst., Chongqing, China
Abstract :
In approximately synchronized (AS) code-division multiple-access (CDMA) communication systems, sequences with zero correlation zone (ZCZ) are employed so that multiple-access interference (MAI) and multi-path Interference (MPI) are removed simultaneously. In this paper, a family of mutually orthogonal (MO) ZCZ polyphase sequence (PS) sets is presented. In the proposed MO ZCZ PS sets, the sequences in each set are with a ZCZ and for all time shifts, their cross correlation function vanishes. On the other hand, the sequences in two different sets are orthogonal.
Keywords :
code division multiple access; interference (signal); set theory; synchronisation; approximately synchronized CDMA communication system; code-division multiple-access; multipath Interference; multiple-access interference; mutual orthogonal zero correlation zone; Autocorrelation; Communication systems; Delay; Multiaccess communication; Multiple access interference; AS-CDMA; correlation; orthogonal sequence set; polyphase sequence; zero correlation zone;
Conference_Titel :
Global Mobile Congress 2009
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5302-3
Electronic_ISBN :
978-1-4244-5301-6
DOI :
10.1109/GMC.2009.5295829
