High data rate optical transport network using 8-psk

A method for demodulating a signal, comprising:

• sampling the signal to obtain sampled data;
• and demodulating the sampled data to obtain one or more data streams, the sampled data comprising a number of symbol-mapped bits mapped to a set of symbols according to a modulation scheme, wherein the set of symbols has an integer number of symbols equal to two to the power of the number of symbol-mapped bits, and wherein the modulation scheme has the integer number minus one of the set of symbols equally spaced on a circle centered at an origin of a complex plane and a single symbol inside the circle, the single symbol offset from the origin of the complex plane.

A receiver device, comprising:

• an analog to digital converter that samples a signal to obtain sampled data;
• a demodulator that demodulates the sampled data to obtain one or more data streams, the sampled data comprising a number of symbol-mapped bits mapped to a set of symbols according to a modulation scheme, wherein the set of symbols has an integer number of symbols equal to two to the power of the number of symbol-mapped bits, and wherein the modulation scheme has the integer number minus one of the set of symbols equally spaced on a circle centered at an origin of a complex plane and a single symbol inside the circle, the single symbol offset from the origin of the complex plane.

A receiver apparatus, comprising:

• means for sampling a signal to obtain sampled data;
• and means for demodulating the sampled data to obtain one or more data streams, the sampled data comprising a number of symbol-mapped bits mapped to a set of symbols according to a modulation scheme, wherein the set of symbols has an integer number of symbols equal to two to the power of the number of symbol-mapped bits, and wherein the modulation scheme has the integer number minus one of the set of symbols equally spaced on a circle centered at an origin of a complex plane and a single symbol inside the circle, the single symbol offset from the origin of the complex plane.