Method, arrangement and communication receiver for SNIR...

Details Method, arrangement and communication receiver for SNIR... Method, arrangement and communication receiver for SNIR...

2008-01-29

2008-01-29

Anderson, Matthew (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

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

C455S067130, C455S114200, C455S226300, C375S227000, C375S340000, C375S342000

Reexamination Certificate

active

07324783

ABSTRACT:
A method, arrangement (512) and communication receiver (500) for SNIR estimation of a received signal, by: deriving (512A) an estimation {circumflex over (Z)} of SNIR of the received signal in accordance with the relationZ^=[E⁢{r⁡(t)}]2E⁢{r2⁡(t)}-[E⁢{r⁡(t)}]2,where E represents mean value and r(t) represents the level of the received signal; and correcting (512B,512C) the estimation {circumflex over (Z)} to produce a corrected estimation Z based on the relation Z=α({circumflex over (Z)})×{circumflex over (Z)}, where α({circumflex over (Z)}) represents a correction factor. The estimation may be corrected by calculating the correction factor, retrieving the correction factor from a predetermined table (512B) or retrieving the corrected estimation from a predetermined table. The correction may be effected by adding to a logarithmic estimation a logarithmic correction factor. This provides the advantage of improved performance under conditions of low signal to noise ratio.

REFERENCES:
patent: 5347228 (1994-09-01), Iwasaki
patent: 5602962 (1997-02-01), Kellermann
patent: 5737365 (1998-04-01), Gilbert et al.
patent: 5774837 (1998-06-01), Yeldener et al.
patent: 6028864 (2000-02-01), Marttinen et al.
patent: 6061339 (2000-05-01), Nieczyporowicz et al.
patent: 6256338 (2001-07-01), Jalloul et al.
patent: 6292519 (2001-09-01), Popovic
patent: 6611794 (2003-08-01), Fleming-Dahl
patent: 2003/0046713 (2003-03-01), Bontempi
patent: 2005/0027520 (2005-02-01), Mattila et al.
patent: WO-9940689 (1999-08-01), None
patent: WO-9946869 (1999-09-01), None
patent: WO-0182521 (2001-03-01), None
patent: WO-0120789 (2001-11-01), None
patent: WO-0182538 (2001-11-01), None
patent: WO-0225853 (2002-03-01), None
Boche, H, et al. (2000). “Capacity Improvement of CDMA-based Mobile Communication Systems using Linear Antenna Arrays—Theoretical and Experimental Results,” Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems, Lansing, MI, USA, 2:540-543.
International Search Report mailed on Feb. 27, 2003, for PCT Application No. PCT/GB02/05399, filed on Nov. 22, 2002, three pages.
Search Report dated Sep. 4, 2002, for GB Application No. GB 0128475.1, one page.
Search Report dated Nov. 15, 2006, for EP Application No. 02804284.4, four pages.

Affiliated with

Also associated with

Rating

Method, arrangement and communication receiver for SNIR... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method, arrangement and communication receiver for SNIR..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method, arrangement and communication receiver for SNIR... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2753542