| 艾宇慧,岳沛,周瑜丽,惠俊英.UMFSK水声通信技术研究[J].,2001,20(1):15-22 |
| UMFSK水声通信技术研究 |
| A study on UMFSK underwater acoustic communication |
| |
| 中文摘要: |
| 在ＭＦＳＫ基础上，本文提出了ＵＭＦＳＫ信道编码方法．采用了窄带调频和跳频调制技术，故在一定程度上抑制了由多途效应引起的码内／码间干扰；提出了基于 ＵＭＦＳＫ的实时信道标校技术，可对信道进行稳健均衡，抗信道多途引起的码内干扰，进行了湖试，取得了试验数据并进行了数据分析．分析表明：ＵＭＦＳＫ可抑制码元相消干涉引起的码内干扰，其效果随码元调频带宽的增大而变好；信道标校技术可对信道进行稳健均衡，并由于结构简单，可做到实时实现．基于 ＵＭＦＳＫ的误码率为 １０－３（通信带宽 ２ｋＨｚ，速率 １００－１５０ｂｐｓ）． |
| 英文摘要: |
| in place of CW modulation in MFSK, both frequency modulation and frequency shifting are introduced in UMFSK to combat signal fluctuation caused by the multipath propagation of sound in oceans. To combat temporal, spatial variability of channel, an UMFSK based channel checking is developed that can be a robust equalizer. Experiments were carried out in a lake and data analyses were done, both of which show that UMFSK can suppress negative symbol interference and that the wider the bandwith of the symbol coding, the better the suppressing. Error-rate of UMFSK can be 10-3 where the communication bandwith is 2kHz and the communication rate 100-150bps. |
| DOI：10.11684/j.issn.1000-310X.2001.01.004 |
| 中文关键词: MFSK 水声通信 信道均衡 |
| 英文关键词: MFSK Uderwater acoustic communication Channel equalization |
| 基金项目: |
|
| 摘要点击次数: 2641 |
| 全文下载次数: 808 |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
