Articles


Document Type
Journal article (JA)
Title
Chirp-rate quasi-orthogonality based DSSS-CDMA system for underwater acoustic channel
Author
Yuan, Fei (1); Jia, Zhen-yu (1); Cheng, En (1)
作者单位
(1) Key Laboratory of Underwater Acoustic Communication and Marine Information Technology (Xiamen University), Ministry of Education, Xiamen, China
RPAddress
Xiamen Univ, Minist Educ, Key Lab Underwater Acoust Commun & Marine Informa, Xiamen, Peoples R China.
Email
ResearchID
ORCID
Journal
Applied Acoustics
Publisher
Elsevier Ltd
ISSN
0003-682X
Published
2020-04, 161 ():-.
JCR
ImpactFactor
ISBN
Fund_Code
会议名称
会议地点
会议开始日期
会议结束日期
HYLWLB
HYJB
Keywords
Chirp modulation; Location; Multiple access interference; Spectroscopy; Spread spectrum communication; Underwater acoustics; Underwater equipment
Abstract
Underwater network node positioning is a key supporting technology for underwater networks. Generally, nodes at known locations (anchor nodes) are used to transmit location information to the node to be located, and the node to be located performs location calculation according to the arrival time of the received information, which requires multiple access communication between the anchor nodes and the node to be located. In order to reduce the multiple access interference (MAI) and distinguish the information of different anchor nodes, it is necessary to study the underwater multiple access method. The GPS positioning system uses direct sequence spread spectrum code division multiple access(DSSS-CDMA) technology, and the positioning satellite transmits a signal formed by the BPSK modulation by transmitting a pseudo-random sequence (PN sequence) to the binary code sequence corresponding to the navigation message to the user equipment to be located. The underwater acoustic (UWA) channel has a complex multipath structure and Doppler effect, which causes a large interference to the communication system. Compared with narrowband communication, spread spectrum communication has a strong anti-interference ability, and can maintain the reliability of the communication system in the UWA channel. Based on this, this paper proposes a quasi-orthogonal Chirp-rate based DSSS-CDMA method under UWA channel, and carries out simulation analysis and experimental verification. ? 2019 Elsevier Ltd
WOS Categories
Acoustics
Accession Number
WOS:000513986000006
EI收录号
20195007822508
DOI
10.1016/j.apacoust.2019.107163
ESI_Type
PHYSICS
Collection
SCIE, EI

Back to List