Patent ID: 8125979

Claim:
A multi-channel ITU G.709 optical transport network (OTN) transmitter, the transmitter comprising: a training signal module (TSM) having an input to accept an ITU G.709 OTN frame electrical signal including an OTU overhead (OH) section, an ODU payload section, and a forward error correction (FEC) parity section, the training signal module creating a training-enhanced (TE) OTN frame by leaving the ITU G.709 frame intact and adding a training signal wrapper to the ITU G.709 OTN frame, and supplying the training-enhanced (TE) OTN frame electrical signal at an output; a striping module (SM) having an input to accept the training enhanced OTN frame, the SM striping the training-enhanced OTN frame into n parallel streams to supply n TE_OTN-PFs (Parallel Frames) over an optical channel using Polarization Multiplexed n-Phase Shift Keying (PM-nPSK) modulation, where the training signal wrapper is interleaved across the n TE_OTN-PFs to create a channel wrapper that is added to each parallel TE_OTN-PF stream; wherein the training signal module accepts the ITU G.709 OTN frame at a rate of Xn bits/second, where X is the number of bits in the ITU G.709 OTN frame OTN frame; and, wherein the TSM supplies a TE OTN frame at a rate of (X+T*j)n bits/second, where T is the number of bits in the training signal wrapper and j is selected from a group consisting of 2, 4, and 8.