Abstract
Extrinsic information transfer (EXIT) charts are used to design systematic and nonsystematic repeat-accumulate (RA) codes for iterative detection and decoding. The convergence problems of nonsystematic RA codes are solved by introducing a biregular, or doped, layer of check nodes. As examples, such nonsystematic codes are designed for multi-input/multi-output (MIMO) fading channels and are shown to operate close to capacity.
Original language | English |
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Pages (from-to) | 2764-2772 |
Number of pages | 9 |
Journal | IEEE Transactions on Signal Processing |
Volume | 51 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2003 |
Externally published | Yes |
Keywords
- Detection
- Iterative decoding
- Mutual information
- Repeat-accumulate codes