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Generalized Belief Propagation Receiver for Near-Optimal Detection of Two-Dimensional Channels with Memory
Published on Feb 25, 20073334 Views
We propose a generalized belief propagation (GBP) receiver for two-dimensional (2-D) channels with memory, which is applicative to 2-D inter-symbol interference (ISI) equalization and multi-user detec
Chapter list
Generalized Belief Propagation receiver00:05
Examples of 2-D channels01:20
Examples of 2-D channels01:56
Outline03:19
System model04:27
Outline (cont.)04:51
System model (cont.)05:40
Optimal detection06:19
2-D channels as undirected graphical models07:58
Examples of 2-D channel representations08:28
System model10:00
2-D channels as undirected graphical models10:28
Exact inference – junction tree12:11
Approximate inference: belief propagation12:25
Generalized belief propagation (GBP)12:49
Generalized belief propagation (GBP)13:17
Generalized belief propagation (GBP)13:53
Results: ISI equalization21:26
Results: hexagonal topology cellular network26:27
Conclusions - ITW28:19
Current work29:01
Approximate free energy34:17
The connection between the free energy and the information rate36:03
The connection between the free energy and the information rate (cont.)39:30
The connection between free energy and symmetric information rate40:19
The connection between free energy and the symmetric information rate (cont.)41:04
Experimental results ISI41:30
Experimental results: Wyner’s model42:42
Experimental results: Wyner’s model43:21
Why do GBP-based CVM serve so remarkably?43:45
Local estimates and GBP50:08