Atmospheric optical wireless channel is a time-varying optical channel because of the effect of scintillation, the paper introduces rate compatible punctured turbo code (RCPTC) scheme to provide unequal error protection (UEP) for optical wireless communication. In order to use RCPTC over optical wireless channel, the paper firstly proposed a turbo decoder with iterative optical channel estimation for optical wireless channel. Simulations show that the proposed turbo decoder significantly improves the performance of system. Based on the proposed turbo decoder, the paper compares several RCPTC schemes via simulations. In these RCPTC schemes, the non-uniformly punctured code schemes are compared with uniformly punctured code scheme. Moreover, the systematic puncturing scheme and non-systematic puncturing scheme are both discussed.

What is, to our knowledge, a new kind of laser tree space communication syslem is reported. In this system, a laser diode is locked and tracked at the transmission peak of a Faraday anamolous dispersion optical filter (FADOF) so as to obtain a stabilized lasing. A Zeeman ab-sorption Fadof (Fadof/Zeeman) was employed as a stabillzed re-ceiver. The bandwidth of the Fadof/Zeeman is about 1 GHz. which is three times less than that of the FADOF. The tuning capability is about 1 GHz/0.01T. We successfuily conducted the audio and vlsual tele-phone optical communication experiment by means of this system in a strong solar baclground and compared the systematic property of the FADOF/Zeeman receiver and the interference filler (IF) receiver. The results show that the sensibilty of the FADOF/Zeeman eceiver is about 25 times higher than that of the IF.