Re: [Discuss-gnuradio] Modifying Tx rate

[Marcus Müller]

HI SangHyuk,

as Martin explained, you're using the old blocks (which are still contained in the modern GNU Radio).
It's very hard to help you with that.

Please use the new blocks, as you'll find them in the gnuradio/digital/ofdm example rx_ofdm.grc.

Also, your question is still unclear; the rate of samples you send is fully specified by your settings.

Best regards,
Marcus

On 25.03.2016 09:43, SangHyuk Kim wrote:

Hi, 

I have tried to get better performance(throughput & error rate) in OFDM packet transceiver.

I tested TxRx experiments in variety environments (modulation, frequency, bandwidth, fft_length, occupied_carriers, gain level, packet size and etc.)

As a result, I got a poor performance and I found it's because of slow Tx rate

So, I tried to trace packet sending process but I can't find which part what I modify.

It is what I find until now :

making packet -> inserting msg_queue -> sending -> deleting msg_header 

msg_queue is limited (ex; 4)

sending(Tx rate) is slow, so deleting msg_header is also slow

making packet is very fast, so inserting msg_queue is blocked.

consequently, even if making packet is so fast, its' actual Tx rate is limited by something

I want to change Tx rate to higher and know which options are efficient to do this

Thanks !

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