UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 36084

Logicore 802.16e CTC decoder v4.0 - 1 SISO does not work if you put 2400, 24, and 2400 blocks into the decoder. How can I work around this?

Description

ForLogicore 802.16e CTC decoder v4.0,when CTC decoder is configured withone SISO, and if you send 2400, 24, and 2400 coded blocks to the CTC decoder, you will not see the output of third block(2400). How can I work around this?

Solution

There are two sets of block sizes.

The first set is 24, 36, 48, 72, 96, 108, 120, 144, 180, 192, 216 and 240.

The second set is 480, 960, 1440, 1920 and 2400.

Switching between the two sets is causing the problem.When the number of SISOs is equal to one, the two sets should be treated as one set. A workaround is to flush the decoder before switching between the two sets, or set the number of SISOs to greater than one.

For a detailed list ofLogicore 802.16e CTC decoderRelease Notes and Known Issues, see (Xilinx Answer 29447).

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
29447 LogiCORE 802.16E Convolutional Turbo Code (CTC) Decoder - Release Notes and Known Issues N/A N/A
AR# 36084
Date Created 01/18/2012
Last Updated 12/15/2012
Status Active
Type General Article
IP
  • IEEE 802.16e CTC Decoder