System and method for assigning code blocks to constituent decoder units in a turbo decoding system having parallel decoding units
A system for, and method of, assigning code blocks to constituent decoding units in a turbo decoding system having parallel decoding units. In one embodiment, the system includes: (1) a resource model generator configured to generate a model that represents the constituent decoding units and memories thereof along two dimensions, (2) a decoding unit number calculator associated with the resource model generator and configured to determine, for each of the code blocks, a number of the constituent decoding units to use to decode subblocks of each of the code blocks, (3) a rectangle mapper associated with the decoding unit number calculator and configured to generate a mapping in which the code blocks are mapped to the model and (4) a code block assigner associated with the rectangle mapper and configured to assign the subblocks of each code block to the constituent decoding units in accordance with the mapping.
1. A system for assigning code blocks to constituent decoding units in a turbo decoding system having parallel decoding units, comprising:
a resource model generator configured to generate a model that represents said constituent decoding units and memories thereof along two dimensions;
a decoding unit number calculator associated with said resource model generator and configured to determine, for each of said code blocks, a number of said constituent decoding units to use to decode subblocks of each of said code blocks;
a rectangle mapper associated with said decoding unit number calculator and configured to generate a mapping in which said code blocks are mapped to said model; and
a code block assigner associated with said rectangle mapper and configured to assign said subblocks of each code block to said constituent decoding units in accordance with said mapping.
2. The system as recited in claim 1 wherein a number of said constituent decoding units is a power of two.
3. The system as recited in claim 1 wherein said number of said constituent decoding units to use to decode said subblocks is a power of two.
4. The system as recited in claim 1 wherein said subblocks of each of said code blocks are of substantially equal length.
5. The system as recited in claim 1 wherein said memories are of equal size.
6. The system as recited in claim 1 wherein said code blocks range in length from 40 bits to 6144 bits.
7. The system as recited in claim 1 wherein said turbo decoding system has at least four of said constituent decoding units.
8. The system as recited in claim 1 wherein at least one of said code blocks is contained in only one subblock.
9. The system as recited in claim 1 wherein said rectangle mapper is configured to generate said mapping in an order that is based on lengths of said code blocks.
10. The system as recited in claim 1 wherein said code blocks are divided into different numbers of subblocks.