The Morgan Kaufmann Series in Multimedia Information and Systems
CHAPTER 6 Practical Dirty-Paper Codes
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01 Front Matter
CHAPTER 6 Practical Dirty-Paper Codes
183 6.1 Practical Considerations for Dirty-Paper Codes . . . . . . . . . . . 183 6.1.1 Efficient Encoding Algorithms . . . . . . . . . . . . . . . . 184 6.1.2 Efficient Decoding Algorithms . . . . . . . . . . . . . . . . 185 6.1.3 Tradeoff between Robustness and Encoding Cost . . . . . 186 6.2 Broad Approaches to Dirty-Paper Code Design . . . . . . . . . . . 188 6.2.1 Direct Binning . . . . . . . . . . . . . . . . . . . . . . . . . 188 6.2.2 Quantization Index Modulation . . . . . . . . . . . . . . . 188 6.2.3 Dither Modulation . . . . . . . . . . . . . . . . . . . . . . . 189 6.3 Implementing DM with a Simple Lattice Code . . . . . . . . . . . 189 6.4 Typical Tricks in Implementing Lattice Codes . . . . . . . . . . . . 194 6.4.1 Choice of Lattice . . . . . . . . . . . . . . . . . . . . . . . . 194 6.4.2 Distortion Compensation . . . . . . . . . . . . . . . . . . . 194 6.4.3 Spreading Functions . . . . . . . . . . . . . . . . . . . . . . 195 6.4.4 Dither . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 x Contents 6.5 Coding with Better Lattices . . . . . . . . . . . . . . . . . . . . . . 197 6.5.1 Using Nonorthogonal Lattices . . . . . . . . . . . . . . . . 197 6.5.2 Important Properties of Lattices . . . . . . . . . . . . . . . 199 6.5.3 Constructing a Dirty-Paper Code from E 8 . . . . . . . . . 201 6.6 Making Lattice Codes Survive Valumetric Scaling . . . . . . . . . . 204 6.6.1 Scale-Invariant Marking Spaces . . . . . . . . . . . . . . . . 205 6.6.2 Rational Dither Modulation . . . . . . . . . . . . . . . . . . 207 6.6.3 Inverting Valumetric Scaling . . . . . . . . . . . . . . . . . 208 6.7 Dirty-Paper Trellis Codes . . . . . . . . . . . . . . . . . . . . . . . . 208 6.8 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Download 208.15 Kb. Do'stlaringiz bilan baham: |
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