Link adaptation based on generic CINR measurement according...

Details Link adaptation based on generic CINR measurement according... Link adaptation based on generic CINR measurement according...

2008-09-19

2011-12-13

Flores, Leon (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C375S267000, C375S299000, C375S340000, C375S347000, C455S101000, C455S132000, C455S296000, C455S500000, C455S522000, C370S335000, C370S342000, C714S794000, C714S795000, C714S796000

Reexamination Certificate

active

08077809

ABSTRACT:
Techniques are provided to compute the carrier to interference-plus-noise ratio (CINR) in a wireless communication system using log-likelihood ratio (LLR) data generated from a received transmission. The LLR data are collected as they are sent from a detector to a forward error correction (FEC) decoder in a wireless communications device. In one embodiment, decision-aided LLR based CINR is computed using the decoded bits output from the FEC decoder as feedback. In another embodiment, blind LLR based CINR is computed without feedback. The CINR may be used to adjust a modulation and/or coding parameters associated with wireless communication between wireless communication devices.

REFERENCES:
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patent: 2003/0103470 (2003-06-01), Yafuso
patent: 2004/0120411 (2004-06-01), Walton et al.
patent: 2008/0051095 (2008-02-01), Chang et al.
patent: 2004086671 (2004-10-01), None
Lamarea M. et al., “Decoding Algorithms for Reconfigurable Space-Time Turbo Codes,” International Conference on Acoustics, Speech, and Signal Processing; vol. 5, Apr. 6-10, 2003, pp. V—129-V—132.
Communication Relating to the Results of the Partial International Search dated Apr. 1, 2009 cited in PCT/US2008/077169.

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