# Re: Adding extra errors while transmission

**URL:** <https://www.ruby-forum.com/t/re-adding-extra-errors-while-transmission/245617>\
**Category:** GNU Radio\
**Created:** [June 19, 2013, 6:30pm UTC](https://www.ruby-forum.com/t/re-adding-extra-errors-while-transmission/245617 "2013-06-19T18:30:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [June 19, 2013, 6:30pm UTC](https://www.ruby-forum.com/t/re-adding-extra-errors-while-transmission/245617/1 "2013-06-19T18:30:09Z")

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Most of the times I get:-

0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101

for transmission of :-

0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101  
0101010101010101010101010101010101010101010101010101010101010101010101

\*My channel model Parameters:- \*

_self.channel\_model\_0 = filter.channel\_model(_

- noise\_voltage=0.00,\*
- frequency\_offset=0.00,\*
- epsilon=1.0,\*
- taps=([1.0, 0.25-0.25j, 0.50 + 0.10j, -0.3 + 0.2j, 0.1 - 0.01j, -0.2 +  
0.2j] ),\*
- noise\_seed=3,\*
- )\*
- 
- 

\*Jay Prakash \*

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<div class="post-metadata">

**Author:** ![Jay\_Prakash](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/3bc359/32.png) [@Jay\_Prakash](https://www.ruby-forum.com/u/Jay_Prakash)\
**Post date:** [June 19, 2013, 6:52pm UTC](https://www.ruby-forum.com/t/re-adding-extra-errors-while-transmission/245617/2 "2013-06-19T18:52:21Z")

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On Wed, Jun 19, 2013 at 09:58:38PM +0530, Jay Prakash wrote:

> Most of the times I get:-
> 
> 0101010101010101010101010101010101010101010101010101010101010101010101

No-one will read a bunch of 10101.  
Please read  
[http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors](http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors)  
and  
[http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ](http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ).

Before you repost, make sure you have a clear idea of the problem you’re  
experiencing, and find a way to convey it to us in a clear fashion.

In your post, you also forget _all_ relevant information, most  
importantly which modulation you used, and how your receiver is  
structured (or was it one of the stock receivers?).

MB

–  
Karlsruhe Institute of Technology (KIT)  
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin B.  
Research Associate

Kaiserstraße 12  
Building 05.01  
76131 Karlsruhe

Phone: +49 721 608-43790  
Fax: +49 721 608-46071  
www.cel.kit.edu

KIT – University of the State of Baden-Württemberg and  
National Laboratory of the Helmholtz Association

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<div class="post-metadata">

**Author:** ![Jay\_Prakash](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/3bc359/32.png) [@Jay\_Prakash](https://www.ruby-forum.com/u/Jay_Prakash)\
**Post date:** [June 19, 2013, 7:12pm UTC](https://www.ruby-forum.com/t/re-adding-extra-errors-while-transmission/245617/3 "2013-06-19T19:12:48Z")

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If it helps, the packet framer actually inputs bytes, not bits. So thats  
8 bits of information per byte. So rather than 1/0, you have 0-255 as  
possibilities. – not sure if that effects your experiment, just FYI

-josh