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Missing Positive Spectrum

From: Jay Patel
Subject: Missing Positive Spectrum
Date: Thu, 11 Feb 2021 19:08:10 -0400
Hi all,

I am trying to create an OFDM transmitter using GNU Radio Companion and an Analog Devices ADALM-Pluto SDR (attached my *grc file). It looks like i am missing something. When i visualize my spectrum, it only have negative side, I am expecting both side of spectrum (something like attached).

What am I missing?

Thanks.




Attachment: PlutoOFDMGNURadio.grc
Description: application/gnuradio-grc

Attachment: PlutoOFDMGNURadio.pdf
Description: Adobe PDF document

Attachment: QTWaterFall.png
Description: PNG image

Attachment: QTOutput.png
Description: PNG image

Attachment: ExpectedOutput.png
Description: PNG image

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