SYSTEMS AND METHODS FOR APPROXIMATING LOG LIKELIHOOD RATIOS IN A COMMUNICATION SYSTEM

Title:

SYSTEMS AND METHODS FOR APPROXIMATING LOG LIKELIHOOD RATIOS IN A COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2009/120669

Kind Code:

A8

Abstract:

System and method for computing log likelihood ratios in a communication system are described. A demodulated symbol may be received. A set of scalars may be determined based on a modulation order, a signal-to-noise ratio for the symbol, and a bit of the symbol. At least one log likelihood ratio for the bit may be approximated using a piecewise linear process based on the scalars and the symbol.

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Inventors:

CHALLA RAGHU N (US)
SAMPATH HEMANTH (US)
VERMANI SAMEER (US)

Application Number:

PCT/US2009/038055

Publication Date:

August 12, 2010

Filing Date:

March 24, 2009

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Assignee:

QUALCOMM INC (US)
CHALLA RAGHU N (US)
SAMPATH HEMANTH (US)
VERMANI SAMEER (US)

International Classes:

H04L25/06

Attorney, Agent or Firm:

MOSKOWITZ, Larry, J. (5775 Morehouse DriveSan Diego, CA, US)

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