Performance Analysis of Coherent Atmospheric Optical Communications with Soft-Decision Forward Error Correction
Jinjing Tao, Jin Nan Zhang, Yang An Zhang, Yong Qing Huang, Yuan Xue, Yu Peng Li · Applied Mechanics and Materials · 2013
Performance of coherent atmospheric optical communication system with heterodyne detection and LDPC codes was evaluated over atmospheric channel attenuations of which are about 20-30 dB/km. To reduce bit error and enhance the system performance LDPC code was implemented in system. Combining coherent detection and LDPC codes could reduce the received power requirement ~4 dBm at the BER of 10-9.