Title :
Application of quasi-orthogonal sequence in underwater acoustic DSSS communication system
Author :
Chang, Shun-Hsyung ; Weng, Cheng-Hung ; Chen, Jiang-Yao
Author_Institution :
Dept. of Microelectron. Eng., Nat. Kaohsiung Marine Univ., Taiwan
Abstract :
This article deals with the performance of quasi-orthogonal sequence in underwater acoustic direct sequence spread spectrum communication. A code division multiple access communication system adopting quasi-orthogonal sequences as short code is considered. The capability of a quasi-orthogonal sequence in combating intersymbol interference and multiple access interference is discussed and the capacity of the system is calculated. Computer simulation showed that the quasi-orthogonal sequence is more robust in an underwater acoustic channel.
Keywords :
acoustic noise; acoustic wave interference; code division multiple access; digital simulation; multipath channels; spread spectrum communication; underwater acoustic communication; underwater acoustic propagation; code division multiple access communication system; computer simulation method; direct sequence spread spectrum; intersymbol interference; multiple access interference; quasiorthogonal sequence; underwater acoustic DSSS communication system; underwater acoustic channel; Additive white noise; Delay effects; Detectors; Gaussian noise; Multiaccess communication; Multiple access interference; Phase detection; Spread spectrum communication; Underwater acoustics; Underwater communication;
Conference_Titel :
Underwater Technology, 2004. UT '04. 2004 International Symposium on
Print_ISBN :
0-7803-8541-1
DOI :
10.1109/UT.2004.1405511
