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AR# 36769

LogiCORE IP 3GPP LTE Turbo Decoder v2.0 - Why are DSP resources not used for the MAX* algorithm?


The MAX* algorithm gives better BER performance and using DSP would save resources, sowhyare DSP resources not usedfor the MAX* algorithm?


MAX* is not supported in DSPsbecausehigh performance cannot be guaranteed. The data sheet (DS675) does say that tests have shown that 7 or 8 iterations of MAX SCALE is approximately equivalent to 6 of MAX*. So, the BER performance can be achieved using MAX SCALE and with more iterations.
If latency is an important requirement, then the fabric-based turbo decoder using the MAX* algorithm has to be used.
For a detailed list of LogiCORE IP3GPP LTE Turbo Decoder Release Notes and Known Issues, see (Xilinx Answer 30630)

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
30630 LogiCORE 3GPP LTE Turbo Decoder - Release Notes and Known Issues N/A N/A
AR# 36769
Date 05/20/2012
Status Active
Type Known Issues
  • 3GPP LTE Turbo Decoder