Method and apparatus for switching on and off interference...

Details Method and apparatus for switching on and off interference... Method and apparatus for switching on and off interference...

2006-02-28

2006-02-28

Urban, Edward F. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S273000, C455S296000, C375S346000, C375S347000

Reexamination Certificate

active

07006811

ABSTRACT:
A method of operation of a receiver of a mobile station or a base station of a radio access network and corresponding equipment, the method for use in providing interference cancellation according to a single antenna interference cancellation (SAIC) algorithm without degrading performance in case of little or no interference. The method uses a metric M (having a value that is large when there is strong interference) to gauge whether or not to process an incoming signal burst using a processing path (14a–16a) including a module implementing a SAIC algorithm or instead to process the incoming signal burst using a conventional equalizer processing path (14b–16b). A selector module (13) selects one or the other path based on comparing the metric M with a threshold δ. Various metrics M are possible.

REFERENCES:
patent: 5822380 (1998-10-01), Bottomley
patent: 2005/0111596 (2005-05-01), Olsson et al.
Jeong Ko et al. , 0-7803-4788-Sep. 1998, IEEE, 1998, pp. 719-722, a symbol by symbol based adaptiveinterference canceller for asynchronous DS/CDMA systems in multipath fading channels.
3rd Generation Partnership Project; Technical Specification Group GSM/EDGE Radio Access Network; Radio transmission and reception(Release 6), 3GPP TS 45.005 V6.0.0 (Nov. 2002).
Wireless Cochannel Interference Cancelling, Wireless Personal Communications, No. 19, pp. 37-55; 2001, Klower Academic Press.

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