UTC
Subject: [digitalradio] Testing Digital Codes at Bit Level
I would like to test some digital codes at the bit level, rather than the
audio level. Does anyone know of a program that will introduce noise by
changing bits in a bit stream?
Is anyone familiar with any published works
I understand about the use of soft decoders.
If the protocol uses a soft decoder and another hard decoder the latter
works at the bit level. A standard example is using Reed-Solomon for the
hard decoder. Would the bit flipping be representative of the atmospheric
effects for the outer hard
, they still use an
RS code that is capable of correcting bursts of 8 errors.
73,
John
KD6OZH
- Original Message -
From: Rud Merriam
To: digitalradio@yahoogroups.com
Sent: Tuesday, November 06, 2007 20:10 UTC
Subject: RE: [digitalradio] Testing Digital Codes at Bit Level
Digital Codes at Bit Level
I understand about the use of soft decoders.
If the protocol uses a soft decoder and another hard decoder the latter
works at the bit level. A standard example is using Reed-Solomon for the
hard decoder. Would the bit flipping be representative of the atmospheric
: [digitalradio] Testing Digital Codes at Bit Level
In addition, if you have a systematic code versus convolutional or trellis
encoding is the bit flipping not applicable? One of my other research
activities is on Low Density Parity Codes since they approach channel capacity
better than other
I would like to test some digital codes at the bit level, rather than the
audio level. Does anyone know of a program that will introduce noise by
changing bits in a bit stream?
Is anyone familiar with any published works on the web that discuss testing
at this level?
---
I have a feeling that
