# Trouble at OFDM demodulation

**URL:** <https://www.ruby-forum.com/t/trouble-at-ofdm-demodulation/233431>\
**Category:** GNU Radio\
**Created:** [December 12, 2014, 6:31pm UTC](https://www.ruby-forum.com/t/trouble-at-ofdm-demodulation/233431 "2014-12-12T18:31:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [December 12, 2014, 6:31pm UTC](https://www.ruby-forum.com/t/trouble-at-ofdm-demodulation/233431/1 "2014-12-12T18:31:54Z")

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Good Morning Sir,

```
Iam trying to* impliment OFDM Mod & De Mod on GNU Radio*.But at

```

demodulation i got error like below.Will you please help me

regarding this

ERROR:

_allocate\_buffer: warning: tried to allocate_

- 40 items of size 1600. Due to alignment requirements\*

- 1024 were allocated. If this isn’t OK, consider padding\*

- your structure to a power-of-two bytes.\*

- On this platform, our allocation granularity is 65536 bytes.\*

---

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**Author:** ![gaddam\_yamuna](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/779978/32.png) [@gaddam\_yamuna](https://www.ruby-forum.com/u/gaddam_yamuna)\
**Post date:** [December 12, 2014, 7:00pm UTC](https://www.ruby-forum.com/t/trouble-at-ofdm-demodulation/233431/2 "2014-12-12T19:00:08Z")

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Hello Gaddam,

that’s a warning, not an error. Ignore it, unless you run out of memory.

Greetings,  
Marcus