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AR# 30178

LogiCORE Turbo Product Code (TPC) Decoder - Release Notes and Known Issues

Description

Keywords: ISE, Mobile, FEC, Turbo, Decode

This Answer Record contains the Release Notes and Known Issues list for the CORE Generator LogiCORE Turbo Product Code (TPC) Decoder core.

The following information is listed for each version of the core:
- New Features
- Bug Fixes
- Known Issues

LogiCORE Turbo Product Code (TPC) Decoder Lounge:
http://www.xilinx.com/products/ipcenter/DO-DI-TPCDEC.htm

Solution

General LogiCORE Turbo Product Code (TPC) Decoder Issues
- The TPC is targeted for a Virtex-II / II-Pro, would it be possible to port this to a Spartan-II / IIE / 3 or Virtex / E / 4? See (Xilinx Answer 19413).
- How can I get the TPC to compile using XST, without incurring MAP Pack ERROR:Pack:679? See (Xilinx Answer 22258).

LogiCORE Turbo Product Code (TPC) Decoder v1.1
Initial Release in January 21, 2003
New Features
- Performs decoding for the turbo product codes listed in the IEEE 802.16 and 802.16a standards
- Based on the Comtech AHA Corporation (AHA) TPC Galaxy Core
- Four-SISO option achieves a data rate of 155 Mbps with five iterations using (64,57)2 code
- Single-SISO option achieves a data rate of 45 Mbps with five iterations using (64,57)2 code
- Provides more than 7 dB of coding gain at 10-6 BER compared to uncoded BPSK in an AWGN channel
- Provides up to 10 dB of coding gain over Reed-Solomon concatenated with Viterbi in an MMDS fading channel at a BER of 10-6
Bug Fixes
- N/A
Known Issues
- Why does the OutputRDY signal remain High for six clock cycles after the output FIFO is empty? See (Xilinx Answer 24299).



AR# 30178
Date Created 03/13/2008
Last Updated 03/13/2008
Status Active
Type General Article