Polarization-switched differential ternary phase-shift keying

摘要

Methods and systems for transmission and reception of ternary phase-shift keyed data that include mapping triplets of binary bits to pairs of ternary symbols, such that three bits of data are encoded across two symbols having three-point constellations; modulating the pairs of ternary symbols onto a carrier; and transmitting the modulated carrier across a transmission medium.

主权项

1. A method for transmitting ternary phase-shift keyed data, the method comprising:
mapping triplets of binary bits to pairs of ternary symbols, such that three bits of data are encoded across two symbols having three-point constellations; modulating the pairs of ternary symbols onto a carrier; transmitting the modulated carrier across a transmission medium; and forming an alternating polarization optical carrier beam,wherein said forming comprises:
modulating a series of pulses onto a laser beam; removing every second pulse from the modulated beam; splitting each pulses into two; delaying one split pulse by one signal period; rotating one split pulse's polarization; and combining the split pulses to form a series of pulses having alternating polarization.