Citation
Abstract
We show the storage requirements for soft-in soft-out (SISO) decoding of pulseposition modulation may be reduced by discarding a substantial subset of the slot likelihoods while suffering neglibible loss in performance in a serially concatenated, iteratively decoded scheme. We illustrate optimum processing of the remaining subset under a choose the maximum rule and show that a simplified trellis may be used for SISO decoding.
Keywords
PPM
deep space optical communications
Details
- Volume
- 42-161
- Published
- May 15, 2005
- Pages
- 1–20
- File Size
- 236.2 KB