An improvement on duty-cycle division multiplexing technique

Duty-Cycle Division Multiplexing (DCDM) is a novel multiplexing technology for realizing channel multiplexing in which each user is identified as unique duty cycle. The voltage levels of multiplexed signals are one larger than the number of users in DCDM system. To reduce the voltage levels, a new signal combination technique called Improved Duty-Cycle Division Multiplexing (I-DCDM) is proposed. Take a 4-channel system for an example, the realizing principle and means are analyzed. The simulation of I-DCDM system using Optisystem and Matlab shows that the max voltage level of multiplexed signals is reduced by 1, the log of Bit Error Rate (BER) is reduced by 1.6512 and the power of multiplexed signals is reduced by 16.25%. Hence, the improvement not only reduces the voltage levels but only improves the performance of DCDM system.