Method and apparatus for suppressing co-channel interference...

Details Method and apparatus for suppressing co-channel interference... Method and apparatus for suppressing co-channel interference...

2005-09-13

2005-09-13

Nguyen, Duc M. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S307000, C455S063100, C455S067130, C375S346000, C375S348000, C375S148000

Reexamination Certificate

active

06944434

ABSTRACT:
A method of operation of a filter (12) of a receiver (10) of a mobile station or a base station of a radio access network and corresponding equipment, the method for use in suppressing co-channel interference and based on separating the in-phase (I) and quadrature phase (Q) components of the received signal and then performing whitening on a symbol-by-symbol basis, i.e. the whitening operation is done within one symbol. The invention provides a filter (12) including a module (12b) for performing IQ whitening (either according to the invention or otherwise), and also provides a switch (12a) that can be used to enable or disable IQ whitening, depending on the character of the received signal, and in particular based on the noise plus interference correlation matrix ({tilde over (R)}ii)

REFERENCES:
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patent: 5875216 (1999-02-01), Martin
patent: 2003/0063596 (2003-04-01), Arslan et al.
patent: 2004/0170234 (2004-09-01), Pukkila et al.
patent: WO 01/93439 (2001-12-01), None
Baccarelli et al, “Minimum-error-probability single-user detection for ISI-impaired narrow-band multiuser systems”, IEEE trans. on communications, vol. 49, No. 6, Jun. 2001.

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