16QAM transmission with 5.2 bits/s/Hz spectral efficiency over transoceanic distance.
We transmit 160 x 100 G PDM RZ 16 QAM channels with 5.2 bits/s/Hz spectral efficiency over 6,860 km. There are more than 3 billion 16 QAM symbols, i.e., 12 billion bits, processed in total. Using coded modulation and iterative decoding between a MAP decoder and an LDPC based FEC all channels are decoded with no remaining errors.
TE SubCom, 250 Industrial Way West, Eatontown, New Jersey 07724, USA. HZhang@subcom.com
H
H
Zhang
J-X
JX
Cai
H G
HG
Batshon
C R
CR
Davidson
Y
Y
Sun
M
M
Mazurczyk
D G
DG
Foursa
A
A
Pilipetskii
G
G
Mohs
Neal S
NS
Bergano
D003195:Computer Communication Networks / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009792:Oceans and Seas; D055096:Optical Devices; D055100:Optical Fibers; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*