TY - JOUR
T1 - FSO Detection using differential signaling in outdoor correlated-channels condition
AU - Mansour Abadi, Mojtaba
AU - Ghassemlooy, Zabih
AU - Khalighi, Mohammad-Ali
AU - Zvanovec, Stanislav
AU - Bhatnagar, Manav
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In this letter, we introduce a detection technique based on differential signaling scheme for outdoor free space optical communications. This method requires no channel state information (CSI) and does not suffer from the computational load compared with the conventional receivers, where adjusting dynamically the detection threshold level (either based on CSI knowledge, or by using pilots) leads to increased computational time and reduced link throughput. This letter shows that the performance of the proposed technique only depends on the correlation of propagating optical beams. Especially under highly correlated-channels condition the fluctuation of the detection threshold level in the receiver is significantly small. We also show experimentally that under weak turbulence regime the variance of detection threshold level reduces for the correlated channel.
AB - In this letter, we introduce a detection technique based on differential signaling scheme for outdoor free space optical communications. This method requires no channel state information (CSI) and does not suffer from the computational load compared with the conventional receivers, where adjusting dynamically the detection threshold level (either based on CSI knowledge, or by using pilots) leads to increased computational time and reduced link throughput. This letter shows that the performance of the proposed technique only depends on the correlation of propagating optical beams. Especially under highly correlated-channels condition the fluctuation of the detection threshold level in the receiver is significantly small. We also show experimentally that under weak turbulence regime the variance of detection threshold level reduces for the correlated channel.
U2 - 10.1109/LPT.2015.2480011
DO - 10.1109/LPT.2015.2480011
M3 - Article
SN - 1041-1135
SN - 1941-0174
VL - 28
SP - 55
EP - 58
JO - Photonics Technology Letters
JF - Photonics Technology Letters
IS - 1
ER -