Title :
Spread-spectrum Markovian-code acquisition in asynchronous DS/CDMA systems
Author :
Kohda, Tohru ; Jitsumatsu, Yutaka ; Khan, Tahir Abbas
Author_Institution :
Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
SS codes generated by a Markov chain are shown to be superior to LFSR-based codes and IID codes in asynchronous DS/CDMA systems in terms of the following two common performance measures: 1) success rate of acquisition; and 2) bit error rate of the correlator using an accumulated version of the serial search acquisition.
Keywords :
Markov processes; code division multiple access; codes; correlation methods; error statistics; spread spectrum communication; IID codes; LFSR-based codes; Markov chain; SS codes; accumulated serial search acquisition; acquisition success rate; asynchronous DS/CDMA systems; correlator bit error rate; performance measures; spread-spectrum Markovian-code acquisition; up-sampled code; Bit error rate; Computer science; Correlators; Delay effects; Delay estimation; Gold; Multiaccess communication; Multiple access interference; Random variables; Spread spectrum communication;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205128
