Project Detail

Modem Demodulation Software

Modem Demodulation Software is project number 341051
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Status: Closed
(Project expired)

Selected Providers: -

Budget: $250-750

Created: 11/09/2008 at 18:32 EST

Bid Count: 3

Average Bid: $ 733

11/29/2008 at 18:32 EST

Project Creator: chefo
Employer Rating: (No Feedback Yet)

Description

I need software similar to this:
http://voronuk.boom.ru/projects/modemanalyser/modemanalyser.html

It needs to take a .wav file of a recording of a conversation between two modems and decode it to ASCII.

It needs to take of these standards:
V.34bis 1995 from 2400 bps to 33,600 bps in step of 2400 bps QAM
V.34 1994 from 2400 bps to 28,800 bps in step of 2400 bps QAM
V.32bis 1988 14,400 bps QAM

I think they are all the same QAM

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Messages Posted: 1

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PMB

750

40 days

11-09-2008 22:31 EST

(No Feedback Yet)

Hello I think a group of bits is sent by phase shifting(generally 90 degrees),according to standard. So it is easy to detect this condition in WAV(and find frequency used) file,and restore bit sequences. I can do this in C++ language Regards

PhantomX

700

90 days

11-13-2008 02:58 EST

(No Feedback Yet)

Hi i would like to take this task... Are you comfortable with LabView/C#? Thanks

asatiumtech

750

30 days

11-13-2008 12:35 EST

(No Feedback Yet)

we are a professioanl company in communication PHY layer services and we can do this

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