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Re: [Discuss-gnuradio] packet sending part

From: Martin Braun
Subject: Re: [Discuss-gnuradio] packet sending part
Date: Thu, 24 Mar 2016 17:57:59 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0


you're not using the more recent OFDM blocks, so you won't get a lot of
support here -- I recommend moving to the tx_ofdm and rx_ofdm stuff instead.


On 03/24/2016 04:04 AM, SangHyuk Kim wrote:
> Hi,
> I'm trying to understand how OFDM packet Tx working
> I checked Tx rate and I got a poor rate
> (qam16, freq 1.18GHz, BW 25 MHz, pkt_size 400 --> 4.0 Mbps)
> I found it's because msg_queue block when packet be inserted to tail
> When Tx calls 'send_pkt(payload, ..)', it make packet and insert to tail
> of msg_queue.
> And delete_head is called by ofdm_mapper_bcv_impl::work.
> I tried to change queue limit from 4 to 0 (non-blocking) and it caused
> down my computer (maybe memory problem)
> In this point, I'm wondering which part calls ofdm_mapper_bcv_impl ?
> In other words, where is actual packet transmitting part ?
> Thanks.
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