Signal to interference power ratio measuring apparatus and signa

Details Signal to interference power ratio measuring apparatus and signa Signal to interference power ratio measuring apparatus and signa

1998-02-19

2000-02-29

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

455 673, 370335, 370252, H04B 1500

Patent

active

060320265

ABSTRACT:
The invention provides a technique for measurement of a signal to interference power ratio wherein an SIR can be measured with a higher degree of accuracy without being influenced by a fast fading environment or an inter-station interference or noise environment. A signal to interference power ratio measuring apparatus includes a plurality of interference replica signal production sections for performing inverse diffusion processing for input signals originating from a received signal, performing temporary decision of information symbols regarding the input signals, performing diffusion processing again for the input signals and outputting resulting signals as interference replica signals, a plurality of subtractors for subtracting the interference replica signals from the received signal, an interference power detection section for detecting interference power information, a signal power detection section for detecting signal power information, and a signal to interference power ratio calculation section for calculating signal to interference power ratios from the interference power information and the signal power information.

REFERENCES:
patent: 4124818 (1978-11-01), Lin et al.
patent: 4992798 (1991-02-01), Nozue et al.
patent: 5566165 (1996-10-01), Sawahashi et al.
patent: 5596600 (1997-01-01), Dimos et al.

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