计算机与数字工程
計算機與數字工程
계산궤여수자공정
Computer and Digital Engineering
2015年
11期
2067-2072
,共6页
LED 通信%语音传输%RS 码%PPM 调制%FPGA
LED 通信%語音傳輸%RS 碼%PPM 調製%FPGA
LED 통신%어음전수%RS 마%PPM 조제%FPGA
LED communication%voice transmission%RS code%PPM modulation%FPGA
可见光通信 VLC（Visible Light Communication）是一种高效且绿色环保的可靠通信技术，结合了无线通信和LED 照明技术，具有良好的保密通信性能。为了更好地实现白光 LED 通信，设计出基于 FPGA 平台的白光 LED 语音通信系统。该系统包含了 LED 外围驱动电路、光学系统、光接收机以及数字信号处理系统等。选用 RS 码与脉冲位置调制 PPM相结合的方式，实验表明：该系统具有很好的实时语音传输效果，无噪音，效果好。单个 LED 通信距离达到2．5m ，该方案具有很好的实用性和研究价值。
可見光通信 VLC（Visible Light Communication）是一種高效且綠色環保的可靠通信技術，結閤瞭無線通信和LED 照明技術，具有良好的保密通信性能。為瞭更好地實現白光 LED 通信，設計齣基于 FPGA 平檯的白光 LED 語音通信繫統。該繫統包含瞭 LED 外圍驅動電路、光學繫統、光接收機以及數字信號處理繫統等。選用 RS 碼與脈遲位置調製 PPM相結閤的方式，實驗錶明：該繫統具有很好的實時語音傳輸效果，無譟音，效果好。單箇 LED 通信距離達到2．5m ，該方案具有很好的實用性和研究價值。
가견광통신 VLC（Visible Light Communication）시일충고효차록색배보적가고통신기술，결합료무선통신화LED 조명기술，구유량호적보밀통신성능。위료경호지실현백광 LED 통신，설계출기우 FPGA 평태적백광 LED 어음통신계통。해계통포함료 LED 외위구동전로、광학계통、광접수궤이급수자신호처리계통등。선용 RS 마여맥충위치조제 PPM상결합적방식，실험표명：해계통구유흔호적실시어음전수효과，무조음，효과호。단개 LED 통신거리체도2．5m ，해방안구유흔호적실용성화연구개치。
The visible light communication VLC is a highly efficient and reliable communication of green technology ,a combination of wireless communication and LED lighting technology ,with good confidential communication performance .In order to achieve better communication white LED communication ,white LED voice communications systems are designed based on FPGA platform .The system includes a transmission circuit of the LED ,an optical system ,the optical receiver and digital signal processing systems .RS codes and pulse position modulation PPM are chosen to be united .Experimental results show that :the system has good real-time voice transmission effect ,no noise ,good effect .A single LED communication dis-tance is up to 2 .5 meters ,this program has a good practical and research value .
