Title:
METHODS AND SYSTEMS FOR ACCUMULATING METRICS GENERATED BY A SEQUENCE ESTIMATION ALGORITHM
Document Type and Number:
WIPO Patent Application WO2002039689
Kind Code:
A3
Abstract:
Radiocommunication systems, methods and terminals are described wherein metrics associated with MLSE detecting techniques, e.g., using the Viterbi algorithm, are accumulated in a manner which is less computationally intensive than conventional techniques. The delta metrics associated with each state are partitioned into, for example, six different terms. These terms are then selectively accumulated in phases, before decisions, during decisions and after decisions, to reduce the total number of computations associated therewith. Additionally, certain symmetries associated with exemplary modulations are taken into account in order to further simplify processing and memory requirements of these detecting techniques.
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Inventors:
LINDBOM LARS
FALKENSTROEM MAGNUS
FALKENSTROEM MAGNUS
Application Number:
PCT/SE2001/002530
Publication Date:
August 01, 2002
Filing Date:
November 13, 2001
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
International Classes:
H04L25/03; (IPC1-7): H03M13/39; H04L25/03
Foreign References:
| EP0786872A2 | 1997-07-30 | |||
| EP0677965A2 | 1995-10-18 | |||
| US5499272A | 1996-03-12 |
Other References:
See also references of EP 1334562A2
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