Variable gain amplifiers in underwater optical wireless communication systems
-
摘要: 为了减小水下无线光通信系统中接收信号的动态范围,采用可变增益放大器,论述了基于数字模拟转换器和数字电位器实现可控增益的两种方法,并对基于数字电位器实现的方法进行了仿真实验.结果表明,该方法能有效压缩信号的动态范围,并使其趋于稳定.Abstract: A variable gain amplifier can be used to reduce the dynamic range of the received signal in an underwater optical wireless communication system.Two methods based on digital to analog converter and digital potentiometer,were discussed in detail.Both the methods can be used to control the amplification gain.Simulation was carried out for the method based on digital potentiometer.The results show that the signal dynamic range is effectively compressed and tends to be stable.
-
-
[1] CHANCEY M A.Short range underwater optical communication links[D].Raleigh,North Carolina,USA:North Carolina State University,2005:2-24.
[2] DENG R,RAO J H,ZHANG X H,et al.Convocational code design avoiding malignant codes in underwater optical communication systems[J].Laser Technology,2011,35 (2):222-225 (in Chinese).
[3] HUANG X Sh,WANG R L,XU R Sh,et al.The transmitting and receiving system for underwater laser communication[J].Journal of Ocean University of Qingdao,1998,28(4):651-656(in Chinese).
[4] WANG J D.Design of a digital automatic gain controller used for communicationreceivers[J].Avionics Technology,2010,41 (1):37-40(in Chinese).
[5] LIU Ch X,FU Y T.Gain-programmed amplifier based on AD8402 digital potentiometer[J].Science Technology and Engineering,2007,7(7):1458-1461(in Chinese).
[6] LID.Rescarch and design of variable gain amplifier[D].Shanghai:Shanghai Jiaotong University,2009:15-37(in Chinese).
[7] XI Y H.Realization of programmable gain amplifier[J].Information Technology,2009,33(9):24-25(in Chinese).
[8] STOJANOVIC N,KUPFER T.On the design of AGC circuits in IMDD NRZ optical transmission systems[J].Journal of Lightwave Technology,2008,26(20):3426-3432.
[9] CHENG Y B,LI Q,LIU Sh Q.A novel design for laser orientation detection system[J].Laser Technology,2005,29 (5):538-540 (in Chinese).
[10] FENG Y,ZHANG H.Variable-gain control base on digital potentiometer for laser receiving circuit[J].Journal of Detection & Control,2009,31(4):9-13(in Chinese).
[11] CHEN J Y,YI X S.Time in terval measurement of laser ranging based on CPLD & microchip[J].Laser Technology,2008,33(4):363-365 (in Chinese).
[12] TAN Zh Q,LONG X W.Design of driving circuits of semiconductor lasers for measurement of continuous-wave cavity ring-down technology[J].Laser Technology,2008,32 (1):27-30 (in Chinese).
[13] CHEN B L,ZHANG H,JI T G.The laser proximity fuze based on the AGC[J].Laser Journal,2004,25(1):72-73(in Chinese).
[14] ZHANG X J,ZHANG H,CHEN B L.Methods of improving the precision of laser proximity fuze with laser pulse-phase detecting system[J].Journal of Detection & Control,2007,29(2):77-80(in Chinese).
计量
- 文章访问数: 1
- HTML全文浏览量: 0
- PDF下载量: 6
下载: