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From: | Nowlan, Sean |
Subject: | Re: [Discuss-gnuradio] PSK Mod Block |
Date: | Tue, 23 Jun 2015 15:12:00 +0000 |
This depends on your setup. If you’re just simulating with PSK Mod --> PSK Demod and then comparing the input with the output, then you may be seeing some initial
output from the filters due to the convolution operations. Try searching through your output after some delay. If you disabled differential encoding, you may be seeing a bitstream that is not correct due to phase locking with a fixed phase offset at the receiver. If you’re going over hardware or through a noise channel, you might not have enough SNR to decode properly. If you’re using USRPs, have you experimented with the benchmark_tx/rx scripts? These implement various types of single carrier modulation, including many variants
of PSK. Sean From: Surya Agam [mailto:address@hidden
Thank you for the fast respond, But, when I use PSK Mod then PSK Demod the output different from the input so no output from the Packet Decoder. Any suggestion? On Tue, Jun 23, 2015 at 9:17 PM, Nowlan, Sean <address@hidden> wrote:
-- Sincerely, Surya Agam University Al Azhar of Indonesia, Jakarta |
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