A new 16-ary modulation for super-Nyquist-WDM systems: Dual-polarized quadrature duoquaternary (DP-QDQ) modulation
A new 16-ary modulation format called quadrature duoquaternary (QDQ) is proposed. DP-QDQ can realize super-Nyquist wavelength-division-multiplexing (WDM) transmission. DP-QDQ is investigated in 32-GBaud super-Nyquist-WDM systems by simulations. DP-QDQhas a highspectralefficiencyanda gooddispersiontolerance. DP-QDQ has a lower sensitivity to the sampling time error.
super-nyquist-wdm duoquaternary 16qam shaping mlsd