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Optical Communication Using Subcarrier PSK Intensity Modulation Through Atmospheric Turbulence Channels

机译:通过大气湍流通道使用副载波PSK强度调制的光通信

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This paper studies optical communications using subcarrier phase-shift keying (PSK) intensity modulation through atmospheric turbulence channels. The bit error rate (BER) is derived for optical communication systems employing with 00K or subcarrier PSK intensity modulation. It is shown that a ${rm BER}=10^{-6}$ and a scintillion level $sigma=0.1$, an optical communication system employing subcarrier BPSK is 3 dB better than a comparable system using fixed threshold 00K. When $sigma=0.2$, an optical communication system employing subcarrier BPSK achieves a ${rm BER}=10^{-6}$ at SNR 13.7 dB, while the BER of a comparable system employing 00K can never be less than ${hbox{10}}^{-4}$ . Convolutional codes are discussed for optical communication through atmospheric turbulence channels. Interleaving is employed to overcome memory effect in atmospheric turbulence channels. An upper bound on BER is derived for optical communication systems employing convolution codes and subcarrier BPSK modulation.
机译:本文研究了通过大气湍流通道使用副载波相移键控(PSK)强度调制的光通信。对于采用00K或子载波PSK强度调制的光通信系统,将得出误码率(BER)。示出了$ {rm BER} = 10 ^ {-6} $和闪烁级$ sigma = 0.1 $,使用副载波BPSK的光通信系统比使用固定阈值00K的可比系统好3dB。当$ sigma = 0.2 $时,采用副载波BPSK的光通信系统在SNR 13.7 dB时达到$ {rm BER} = 10 ^ {-6} $,而采用00K的同类系统的BER永远不能小于$ { hbox {10}} ^ {-4} $。讨论了通过大气湍流通道进行光通信的卷积码。交织被用来克服大气湍流通道中的记忆效应。对于使用卷积码和子载波BPSK调制的光通信系统,得出BER的上限。

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