Re: [Discuss-gnuradio] trap divide error in using OFDM carrier allocator

[Jeon]

Ah, never mind.

I declared occupied/pilot carriers and sync words incorrectly. For example,

it must not be ((-3, -1, 1, 3)) but must be (-3, -1, 1, 3),). I forgot putting a comma.

Regards,

Jeon.

On Thu, Dec 22, 2016 at 5:14 PM, Jeon <address@hidden> wrote:

I made a simple flow graph using OFDM Carrier Allocator. Please see the attachment. If the attachment is not available, screenshot of it can be found at http://imgur.com/v7aPL7J

(Almost same as http://gnuradio.org/doc/doxygen-3.7/page_ofdm.html#ofdm_tx)

When I run the flow graph, it immediately stops running. To debug, I look into `dmesg`, and it shows:

[12785.433257] traps: ofdm_carrier_al[23633] trap divide error ip:7fe08fb3f375 sp:7fe073ffe610 error:0 in libgnuradio-digital-3.7.10git.so.0.0.0[7fe08faa2000+f4000]

It's somewhat frustrating because I didn't modify the OFDM Carrier Allocator block. Could anyone suggest a starting point to debug it?

OS is Ubuntu 14.04, kernel 3.13.0-96, 64-bit

GNU Radio version is v3.7.9.2

If more information is required, please let me know it.

Regards,

Jeon.