Title :
MC-CDMA via carrier interferometry Codes in an Underwater Acoustic Channel
Author :
Fang, Hui ; Hu, Xiaoyi ; Xu, Ru ; Xu, Fang
Author_Institution :
Key Lab. of Underwater Acoust. Commun. & Marine Inf. Technol., Minist. of Educ., Xiamen, China
Abstract :
This paper proposes a basic MC-CMDA. via carrier interferometry Codes (CI codes) in an Underwater Acoustic(UWA) Channel. Compared with OFDM in UWAC, it can allow a number of users simultaneously and asynchronously accessing the UWA channel. A trade off relation exists between diversity gain and user capacity as well as between spread spectrum gain and system efficiency. Then diversity combining scheme is discussed. Both simulation and initial tank experiment have proved that the proposed scheme is feasible in UWA channel in a downlink CI/MC-CDMA system.
Keywords :
acoustic wave interferometry; code division multiple access; diversity reception; spread spectrum communication; underwater acoustic communication; wireless channels; MC-CDMA; carrier interferometry codes; diversity combining scheme; diversity gain; spread spectrum gain; system efficiency; underwater acoustic channel; user capacity; Diversity reception; Frequency conversion; Information technology; Interferometry; Laboratories; Multiaccess communication; Multicarrier code division multiple access; OFDM; Underwater acoustics; Underwater communication; CI/MC-CDMA; Carrier interferometry codes; Diversity gain; UWA channel; spreading gain;
Conference_Titel :
Anti-counterfeiting, Security, and Identification in Communication, 2009. ASID 2009. 3rd International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3883-9
Electronic_ISBN :
978-1-4244-3884-6
DOI :
10.1109/ICASID.2009.5277039
