Method and apparatus for muting based on a constant modulus...

Details Method and apparatus for muting based on a constant modulus... Method and apparatus for muting based on a constant modulus...

2008-05-14

2011-12-20

Le, Thanh (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

C455S218000, C455S296000

Reexamination Certificate

active

08081942

ABSTRACT:
A constant modulus indicator (CMI) measure is calculated for a received signal having a constant modulus component C and a noise component N. The CMI measure indicates a ratio of an energy of C to an energy of N. A determination of whether to attenuate a derived signal is made based on the CMI measure, wherein the derived signal is generated from the received signal. The derived signal is attenuated based on the determination.

REFERENCES:
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patent: 5745845 (1998-04-01), Suenaga et al.
patent: 6456833 (2002-09-01), Sessink
patent: 2003/0157914 (2003-08-01), Li et al.
patent: 2008/0287072 (2008-11-01), Elenes et al.
patent: 0 932 253 (1999-07-01), None

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