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Re: [Discuss-gnuradio] How to choose a suitable fec method for GMSK Tx a

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] How to choose a suitable fec method for GMSK Tx and Rx?
Date: Tue, 29 Dec 2015 03:35:12 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0

Hello Franklin,

the choice of appropriate FEC depends *exclusively* on how you want the system to behave, and how you model your transmission, especially with respect to noise. For example, for low-SNR situation, using channel coding actually makes BER worse, so you might even be better off without FEC.

Hence, it is a decision that only *you* can make after defining and testing your transmission system.

There's GMSK demos in GNU Radio, for example gr-channels/examples/demo_gmsk.grc .

There also is a lot of different FEC available, from the "generic" gr-fec stuff over to the highly efficient yet specific polar codes present in newest GNU Radio.

Best regards,

On 12/29/2015 02:55 AM, 苏张 wrote:
Hi all,

I want to build a real tx and rx system using gmsk with usrp and gnuradio. How to choose a suitable fec method for my system. Is there any useful demo or tutorial for me? Thanks.


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