Community Forums - Reply To: 16QAM and/or 64QAM LTE OFDM RoF

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Free Evaluation

October 24, 2015 at 9:26 am #27047

Farhad Hagh Panah Shirvan

Participant

Hi Alistu,

I tried to simulate with lower Sample-per-bit numbers but although carrier frequency of QAM was on 60 GHz, RF Spectrum analyzer was showing the output signal of the Quadrature Modulator around very lower frequency (if my memory serve me right, I set the QAM’s frequency on 60 GHz and Sample-per-bit on 128 and got a signal at frequency of ~10 GHz at the output of Quadrature Modulator), so I increased the Sample-per-bit to 1024 in order to satisfy Nyquist criterion such that sample rate be greater than the twice as highest frequency of system (sampling rate>2*60 GHz). On the other hand when I decreased the number of sequence length, Software got an error in calculations and terminated when software was calculating the OFDM Demodulator.

Regards,

Categories

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