Decision path reduction of M-ary tree-search detector

Details Decision path reduction of M-ary tree-search detector Decision path reduction of M-ary tree-search detector

1997-03-04

1999-04-06

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375341, H04L 100, H04L 2508

Patent

active

058928014

ABSTRACT:
A limited search variant of the fixed delay tree search detector is used to recover digital signals corrupted with intersymbol interference and additive noise. The limited search algorithm uses a variant of an equalizer decision device--a simple slicer--to reduce the number of paths that are considered by the tree search detector from M.sup.D+1 to either D+1 or 2.sup.D+1 paths, thereby significantly reducing the complexity of the tree-search detector. This limited search detector enjoys negligible loss in performance, compared with that of a full fixed delay tree search.

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