基于高斯信道的全息干涉图调制传输研究

研究了包含物体信息的未压缩全息干涉图的图像信源,在高斯信道中经过采用不同调制方式传输后对全息数字再现图像的影响。通过实验揭示,全息干涉图在高斯信道的强噪声影响下,接收图的信息将会受到干扰,导致其数字再现图的物理信息丢失。通过提高信噪比可以增强传输系统的抗干扰能力,提高数字再现物像图的质量。对比所选用的各种调制方式,采用QAM时误码率最低,多进制调制下具有更高的信息数据传送能力和频带利用率,更适于高斯信道中的传输。

Research on the transmission of modulated holographic interferogram over Gaussian channel

This paper mainly study the transmission of using different kinds of modulation for holographic interferogram which contains object information over Gaussian channel,and its influence on holographic numerical reconstructed image.Experiments revealed that when the holographic interferogram was transmitted through Gaussian channel,the physical information of numerical reconstructed image will be lost if the received image was suffered from strong noise.By increasing the signal to noise ratio,the anti-jamming capability of transmission system can be enhanced and the quality of numerical reconstructed image will also be improved.Compared to the variety of other selected modulation,QAM（Quadrature Amplitude Modulation） has the lowest bit error rate,and M-ary modulation has a higher data transmission capacity and bandwidth utilization,which is more suitable for the transmission of Gaussian channel.