[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Discuss-gnuradio] FEC gnuradio 3.7.6 error

From: Hoang Ngo-Khac
Subject: [Discuss-gnuradio] FEC gnuradio 3.7.6 error
Date: Thu, 9 Oct 2014 10:12:02 +0700

Dear all,

I am checking FEC Extended Encoder/Decoder in gnuradio-3.7.6 and would like to embed it in my OFDM transmission. 

First, I run the flowgraph below. It works and I can see how FEC improve the results.

However, when I change some blocks, for example, using BPSK Mapper (as below), it throws me the error: 

terminate called after throwing an instance of 'std::invalid_argument'
  what():  destination already in use by edge deinterleave0:0->fec_encoder0:0


When I modify the flow graph, this error happen regularly even when the new 
inserted block is not connected dirrectly to Encoder or Decoder block.  To make FEC work with my OFDM transmission, I need to make the Encoder and Decoder work compatibly with my blocks. But as you can see, it stops working with when I insert BPSK Mapper to the flow graph, let alone more complicated blocks like OFDM Modulation. 

Please help me to figure out the problem and fix it. Any clue would be appreciated.

Hoang Ngo 

Hoang Ngo-Khac
Research Assistant - Lab. of Signal and System, FET, UET, Vietnam National University-Hanoi (VNU-H)
Alternative email:  address@hidden, address@hidden
Mobilephone:  +84.163.682.7874

reply via email to

[Prev in Thread] Current Thread [Next in Thread]