The differential feedback of channel state information and the channel capacity of free-space optical communications

2014 ◽  
Author(s):  
Yiqiao Li ◽  
Jiankun Zhang ◽  
Anhong Dang
Keyword(s):  
Channel Capacity ◽  
Channel State Information ◽  
Optical Communications ◽  
Free Space ◽  
Free Space Optical ◽  
Channel State ◽  
State Information

Adaptive Interleaving Method and its Application to Free Space Optical Communications through Atmospheric Turbulence Channel

2012 ◽  
Vol 571 ◽  
pp. 382-389
Author(s):  
Zhong Hua Yang ◽  
Qi Wen Ran ◽  
Jing Ma ◽  
Li Ying Tan ◽  
Shi Chen Wu ◽  
...  
Keyword(s):  
Atmospheric Turbulence ◽  
Optical Communications ◽  
Free Space ◽  
Error Correcting Codes ◽  
Free Space Optical ◽  
Channel State ◽  
State Information ◽  
Deep Channel ◽  
The Cost ◽  
Burst Performance

Adaptive interleaving method implemented by a hybrid system is proposed to deal with burst errors caused by long and deep channel fades in free space optical communications (FSOC) through atmospheric turbulence. Actually, considerable memory can be saved by changing the interleaving depth at transmitter and receiver according to the updated burst information from channel estimator. Combining with error correcting codes, anti-burst performance of the proposed method is evaluated by simulations based on channel state information from laser transmission experiments over an 11.8 km urban link. Simulation results show that 1~2 or even higher orders of magnitude of a memory can be saved when comparing with the maximum memory interleaving. The results have proved that the cost of anti-burst performance can be minimized to 10% or even smaller by the adaptive interleaving method when joint use with error correcting codes.

Sign in / Sign up

Export Citation Format

Share Document