循环移位扩频多用户水声通信
Multiuser cyclic shift keying spread spectrum underwater acoustic communication
- 通信学报 2017年38卷第7期 页码：11-17
- 作者机构：
西北工业大学航海学院，陕西 西安 710072
- 作者简介：
[ "何成兵（1981-），男，安徽巢湖人，博士，西北工业大学副教授，主要研究方向为水声通信。" ]
[ "荆少晶（1992-），女，山西永济人，西北工业大学硕士生，主要研究方向为多用户水声通信。" ]
[ "花飞（1989-），男，安徽合肥人，西北工业大学博士生，主要研究方向为水声信号处理。" ]
[ "席瑞（1996-），男，安徽滁州人，西北工业大学硕士生，主要研究方向为水声通信。" ]
[ "张瑞玉（1993-），女，河南周口人，西北工业大学硕士生，主要研究方向为水声通信。" ]
[ "史文涛（1985-），男，陕西扶风人，博士，西北工业大学副教授，主要研究方向为水声信号处理。" ]
[ "张群飞（1968-），男，浙江东阳人，博士，西北工业大学教授，主要研究方向为水声信号处理和水声通信。" ]
- 基金信息：国家自然科学基金资助项目(61471298);国家自然科学基金资助项目(61531015);中央高校基本科研业务费专项基金资助项目(3102016AXXX03);水声通信与海洋信息技术教育部重点实验室（厦门大学）基金资助项目(201503)
DOI：10.11959/j.issn.1000-436x.2017141
中图分类号： TN929.3-
网络首发：2017-07，
纸质出版：2017-07-25
- 稿件说明：
移动端阅览
何成兵, 荆少晶, 花飞, 等. 循环移位扩频多用户水声通信[J]. 通信学报, 2017,38(7):11-17.
Cheng-bing HE, Shao-jing JING, Fei HUA, et al. Multiuser cyclic shift keying spread spectrum underwater acoustic communication[J]. Journal on Communications, 2017, 38(7): 11-17.
何成兵, 荆少晶, 花飞, 等. 循环移位扩频多用户水声通信[J]. 通信学报, 2017,38(7):11-17. DOI： 10.11959/j.issn.1000-436x.2017141.
Cheng-bing HE, Shao-jing JING, Fei HUA, et al. Multiuser cyclic shift keying spread spectrum underwater acoustic communication[J]. Journal on Communications, 2017, 38(7): 11-17. DOI： 10.11959/j.issn.1000-436x.2017141.
摘要
针对现有直接序列扩频码分多址（DS-CDMA）水声通信数据率低且接收复杂度高的问题，提出循环移位扩频多用户通信方法。通过基于M元调制的循环移位扩频技术来有效提高每个用户的数据率，相对DS-CDMA有着更高的带宽效率；利用被动时间反转技术抑制各用户之间的码间干扰和同信道干扰，复杂度低；利用扩频码之间的准正交性提高处理增益。湖上实验研究结果表明在浅水5.27 km距离且复杂多径干扰条件下，利用所提方法可实现10
-2
～10
-4
的误码率并实现6用户通信，通信速率可达39 bit/s。
Abstract
Aiming at the problem of low data rate and high receiver complexity of existing direct sequence spread spectrum code division multiple access (DS-CDMA)
a novel code division multiple access (CDMA) using cyclic shift keying (CSK) signaling
namely CSK-CDMA
was proposed for multiuser underwater acoustic communication.The proposed method used the cyclic correlation characteristic of spread spectrum signals with M-ary modulation to provide a higher data rate than conventional.Passive time reversal technology was employed to suppress inter-code interference between users and the co-channel interference.The quasi-orthogonality of spread spectrum code was used to improve the processing gain.Multiuser communications are demonstrated with lake experimental recorded data under the condition of 5.27 km distance and complex multipath interference.The data rate is 39 bit/s/user for 6 users with bit error rate around 10
-2
～10
-4
.
关键词
Keywords
references
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