JP2006109279A5 - - Google Patents

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Publication number
JP2006109279A5
JP2006109279A5 JP2004295516A JP2004295516A JP2006109279A5 JP 2006109279 A5 JP2006109279 A5 JP 2006109279A5 JP 2004295516 A JP2004295516 A JP 2004295516A JP 2004295516 A JP2004295516 A JP 2004295516A JP 2006109279 A5 JP2006109279 A5 JP 2006109279A5
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JP
Japan
Prior art keywords
autocorrelation function
function
quadrature
synchronization
qpsk
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Application number
JP2004295516A
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English (en)
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JP2006109279A (ja
JP4341522B2 (ja
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Priority to JP2004295516A priority Critical patent/JP4341522B2/ja
Priority claimed from JP2004295516A external-priority patent/JP4341522B2/ja
Publication of JP2006109279A publication Critical patent/JP2006109279A/ja
Publication of JP2006109279A5 publication Critical patent/JP2006109279A5/ja
Application granted granted Critical
Publication of JP4341522B2 publication Critical patent/JP4341522B2/ja
Expired - Fee Related legal-status Critical Current
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Claims (1)

  1. ＱＰＳＫ変調を用いた水中通信方式であって、送信側では、ＱＰＳＫ送信データフレー
    ムの先頭の、ＱＰＳＫ信号の同相成分と直交成分のそれぞれに同一の同期シンボルを付加
    して送信し、受信側では、受信信号を直交検波し、前記直交検波後の同相成分と前記同期
    シンボルとの自己相関関数ｆと、前記直交検波後の直交成分と前記同期シンボルとの自己
    相関関数ｇとを求め、前記自己相関関数ｆの２乗と前記自己相関関数ｇの２乗とを加算し
    て得られる時間関数ｓのピーク値Ｐの位置を同期点として検出して、フレーム同期をとる
    ことを特徴とする水中通信方式。
JP2004295516A 2004-10-08 2004-10-08 水中通信方式 Expired - Fee Related JP4341522B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004295516A JP4341522B2 (ja) 2004-10-08 2004-10-08 水中通信方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004295516A JP4341522B2 (ja) 2004-10-08 2004-10-08 水中通信方式

Publications (3)

Publication Number Publication Date
JP2006109279A JP2006109279A (ja) 2006-04-20
JP2006109279A5 true JP2006109279A5 (ja) 2006-12-28
JP4341522B2 JP4341522B2 (ja) 2009-10-07

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ID=36378448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004295516A Expired - Fee Related JP4341522B2 (ja) 2004-10-08 2004-10-08 水中通信方式

Country Status (1)

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JP (1) JP4341522B2 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120062587A (ko) * 2010-12-06 2012-06-14 강릉원주대학교산학협력단 수중 무선통신을 위한 통신 장치 및 방법
CN103618575B (zh) * 2013-12-11 2015-07-15 厦门大学 一种调频水声通信系统的自动实时帧同步方法
KR101917503B1 (ko) * 2017-04-06 2018-11-09 국방과학연구소 직교 코드가 포함된 수중음향신호를 이용한 다중 수중표적 거리 추정 방법 및 시스템

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