Patent ID: 9479285
Filing Date: 2016-10-25
CPC Classification: H04B,H04J,H04L

Claim Text:
1. A method for data transport, comprising: encoding one or more streams of input data using at least two nonbinary low density parity check (NB-LDPC) encoders; generating one or more NB-LDPC coded four-dimensional (4-D) optimum signal constellations; performing orthogonal frequency division multiplexing (OFDM) on the NB-LDPC coded 4D optimum signal constellations, wherein two OFDM transmitters are employed for each of the 4D optimum signal constellations, ξ=E{|X generating one or more signals using two or more mappers, the mappers configured to assign bits of one or more signals to the signal constellations and to associate the bits of the one or more signals with signal constellation points; modulating the output of the 4-D mappers using a 4-D OFDM transmitter and a 4-D modulator onto a transmission medium using block coded-modulation, and transmitting modulated output of the mappers using the transmission medium; and mode-multiplexing independent 4-D OFDM data streams onto fiber.