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[Discuss-gnuradio] packet sending part

From: SangHyuk Kim
Subject: [Discuss-gnuradio] packet sending part
Date: Thu, 24 Mar 2016 20:04:32 +0900


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 ?


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