The optical communication system is preferred over microwave and radio frequency communication systems because of license free operation. Simulative analysis of 10gbps bandwidth using different optical communication channels have been performed in this paper. The different modulation formats of QAM and PSK have been compared for its performances under all the three optical channels OWC, FSO, and LOS-FSO which are an unguided form of optical communication. The optical channels under these modulation formats are extensively used in Digital Video Broadcasting Communication. The parameters such as Q-factor, BER and Eye height can be obtained by varying the wavelengths in the range of 850 nm 1064 nm, 1330 nm and 1550 nm. From the design and performance analysis, the system with the maximum Q-factor and minimum BER can be found for the wavelength of 1064 nm.

由于免许可操作，光通信系统优于微波和射频通信系统。本文对使用不同光通信信道的 10gbps 带宽进行了仿真分析。已经比较了 QAM 和 PSK 的不同调制格式在所有三个光信道 OWC、FSO 和 LOS-FSO 下的性能，这是一种无引导的光通信形式。这些调制格式下的光信道广泛用于数字视频广播通信。通过在 850 nm、1064 nm、1330 nm 和 1550 nm 范围内改变波长，可以获得 Q 因子、BER 和眼高等参数。从设计和性能分析，