SIR measure method and apparatus for the same

Details SIR measure method and apparatus for the same SIR measure method and apparatus for the same

2007-11-20

2007-11-20

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S347000, C375S348000, C375S349000, C370S342000

Reexamination Certificate

active

10367838

ABSTRACT:
The invention discloses a signal-to-interference ratio (SIR) measurement method. The method measures interference power (I) of a single-path signal after the received signal is demodulated by the single-path demodulators of multipath receiving device at the receiving end. The total interference power is obtained by equipartition combining with the measured interference power of each single-path signal. The signal power (S) is obtained by measuring after maximum ratio combination of each single-path signal. The SIR of the received signal is the division of the signal power and the total interference power. An apparatus, implementing mentioned method, sets the interference power measurement-device in the RAKE combiner and the signal power measurement-device after the RAKE combiner. In this way, the interference measurement can effectively provide more information and can more really response to the channel variation.

REFERENCES:
patent: 5068628 (1991-11-01), Ghoshal
patent: 6034952 (2000-03-01), Dohi et al.
patent: 6070086 (2000-05-01), Dobrica
patent: 6404826 (2002-06-01), Schmidl et al.
patent: 2002/0110109 (2002-08-01), Kawaguchi et al.
patent: EP 0863618 (1998-09-01), None
patent: EP 0944201 (1999-09-01), None

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