公开(公告)号：KR1020130000011A

公开(公告)日：2013-01-02

申请号：KR1020110058496

申请日：2011-06-16

Applicant: 목포대학교산학협력단

Inventor： 김기만 ,  정지원 ,  이성로 ,  모귀환 ,  노신래 ,  박인수 ,  박종환

IPC: H04L27/18 ,  H04L27/30 ,  H04W84/18 ,  H04B13/00

CPC classification number: Y02D70/00 ,  H04L27/2003 ,  H04L27/30

Abstract: PURPOSE: A modulation method for low power communication in an underwater sensor network and a transmitting device using the same are provided to transmit a PSK signal to only a half of a symbol signal and process the other half as a silence section. CONSTITUTION: An underwater sensor network modulates a PSK signal into two of orthogonal symbols to transmit the modulated symbols. A method for low power communication in the underwater sensor network includes a stage for forming two of half cycle signals by using first bit information and a stage for transmitting the PSK signal of a (log)-1 bit. A silence section is determined by using the first bit. A transmitting signal is transmitted as a signal including position information about the modulated signal and symbol. The band efficiency of PSSK(Phase Silence Shift Keying) is a half of PSK. A receiver structure of the PSSK uses a synchronized system.

Abstract translation: 目的：提供一种用于水下传感器网络中的低功率通信的调制方法和使用该调制方法的发送装置，用于将PSK信号仅传送到符号信号的一半，并将另一半作为静音部分处理。 构成：水下传感器网络将PSK信号调制成两个正交符号以发送调制符号。 水下传感器网络中的低功率通信方法包括：通过使用第一比特信息形成两个半周期信号的阶段，以及用于发送（log）-1比特的PSK信号的阶段。 通过使用第一位来确定静音段。 作为包含关于调制信号和符号的位置信息的信号发送发送信号。 PSSK（相位静音键控）的频带效率是PSK的一半。 PSSK的接收机结构使用同步系统。

公开(公告)号：KR1020120139000A

公开(公告)日：2012-12-27

申请号：KR1020110058497

申请日：2011-06-16

Applicant: 목포대학교산학협력단

Inventor： 김기만 ,  정지원 ,  최명수 ,  박선 ,  이성호 ,  이성로

IPC: H04B1/711 ,  H04B11/00 ,  H04L27/18

CPC classification number: H04B1/711 ,  H04B11/00 ,  H04L27/18 ,  H04L27/2647

Abstract: PURPOSE: An underwater sound communication method using a DSSS(direct-sequence spread-spectrum) method is provided to reduce interference between symbols generated in multiple channels in wireless communication by using the DSSS method. CONSTITUTION: A transmission unit spreads the band of a data signal according to a DSSS method. The transmission unit spreads the band of the data signal by multiplying a signal modulated by a QPSK(Quadrature Phase Shift Keying) method by a PN(pseudo noise) code generated from a PN code generator. The transmission unit transmits band spread data information to a reception unit. The reception unit reversely spreads a signal received from the transmission unit through a channel environment by multiplying the signal by the PN code. The reception unit converts the received signal into an original signal through a reverse spread method. [Reference numerals] (a) Transmission unit; (b) Reception unit

Abstract translation: 目的：提供一种使用DSSS（直接序列扩频）方法的水下声音通信方法，通过DSSS方法减少无线通信中多个信道产生的符号间的干扰。 构成：传输单元根据DSSS方法扩展数据信号的频带。 发送单元通过将由QPSK（正交相移键控）调制的信号乘以由PN码发生器产生的PN（伪噪声）码来扩展数据信号的频带。 发送单元向接收单元发送频带扩展数据信息。 接收单元通过将信号乘以PN码，通过信道环境反向扩展从发送单元接收的信号。 接收单元通过反向扩展方法将接收到的信号转换为原始信号。 （附图标记）（a）传输单元; （b）接待单位