Optimization of DSP to Generate Spectrally Efficient 16QAM Nyquist-WDM Signals
15 April 2013
We investigate using DSP to generate 16QAM Nyquist-WDM signals and show that a 37-tap polyphase FIR filter and 1.2-symbol-rate DAC speed is sufficient for 16QAM Nyquist-WDM systems with 1.05-symbol-rate channel spacing.