On-Off Keying Soliton Multiplexing System

Solitons [1] are solutions to a special class of nonlinear partial differential equations representing certain nonlinear systems. Solitons possess many interesting transmission properties through nonlinear systems. Here, we make use of the “interaction property”, i.e., solitons with different parameters preserve their identities after nonlinearly interacting with each other, and propose a multiplexing scheme for data communications. The time-bandwidth characteristics of soliton systems with on-off keying amplitude modulation scheme is examined and the parameter design problem by system optimization is studied. Applying the Volterra series to solve the weakly nonlinear system, we study the detection performance of soliton system and compare it with traditional BPSK signalling under similar time-bandwidth constraint. Numerical results demonstrate that besides high bandwidth efficiency, the soliton multiplexing system also exhibits high robustness against channel noise.