Title :
A two-stage SPRT-based acquisition scheme for CDMA wireless communication systems
Author :
Lin, Jia-Chin ; Wei, Che-Ho
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
29 Jun-4 Jul 1997
Abstract :
The performance of a modified code acquisition scheme, based on two-stage sequential probability ratio test (SPRT), is studied. The first stage (i.e., testing stage) is used to test the sum of M (M>1) local PN codes with different phases. This stage can reject M code phases once for each non-synchronisation declaration, and thus reduce the code acquisition (search) time. Also, the hardware or computation load can be similar to the conventional single-stage acquisition scheme
Keywords :
code division multiple access; phase shift keying; probability; pseudonoise codes; search problems; spread spectrum communication; telecommunication channels; BPSK DS/SS communication system; CDMA wireless communication systems; code acquisition time reduction; code phases; code search time; computation load; local PN codes; modified code acquisition; nonsynchronisation declaration; sequential probability ratio test; spread spectrum communications; testing stage; two-stage SPRT-based acquisition; Binary phase shift keying; Electronic equipment testing; Hardware; Modeling; Multiaccess communication; Performance analysis; Sequential analysis; Spread spectrum communication; System testing; Wireless communication;
Conference_Titel :
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on
Conference_Location :
Ulm
Print_ISBN :
0-7803-3956-8
DOI :
10.1109/ISIT.1997.613067
