US5875216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight generation in stationary interference and noise environments
Assignee: Nokia of America Corp
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Filing: 1997-05-01
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Granted: 1999-02-23
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Expires: 2017-05-01
Abstract
Abstract An apparatus for performance improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals and providing a processed signal, wherein a plurality of weights is applied to the plurality of received signals producing a plurality of weighted received signals. The plurality of weighted received signals are combined to provide the processed signal. A weight generation circuit generates the plurality of weights wherein weights are based on a ratio of a desired signal, a noise signal and an interference signal.
Inventors
- 👤 Carol Catalano Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:08
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/0003; H04B1/0007; H04B1/06; H04B1/16; H04B1/26; H04B1/28; H04B1/38; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0837; H04B7/0842; H04B7/0848; H04B7/0851; H04L; H04L1/00; H04L1/02; H04L1/06; H04L27/00; H04L27/18; H04L27/22
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
An apparatus for performance improvement of a digital wireless receiver comprising: a processing circuit for processing a plurality of received signals and providing a processed signal, wherein a plurality of weights is applied to said plurality of received signals producing a plurality of weighted received signals and said plurality of weighted received signals are combined to provide said processed signal; and a weight generation circuit for generating said plurality of weights, wherein said plurality of weights are based on a noise-plus-interference correlation matrix estimated as constant over a plurality of time slots.
Claim 2
Independent Claim
92 words
An apparatus for performance improvement of a digital wireless receiver comprising: a processing circuit for processing a plurality of received signals and providing a processed signal, wherein a plurality of weights is applied to said plurality of received signals producing a plurality of weighted received signals and said plurality of weighted received signals are combined to provide said processed signal; and a weight generation circuit for generating said plurality of weights, wherein said plurality of weights are based on a noise-plus-interference correlation matrix estimated as constant over a plurality of time slots.
Claim 3
Dependent Claim
18 words
The apparatus as recited in claim 1, wherein said plurality of received signals comprise TDMA mobile radio signals.
Claim 4
Dependent Claim
19 words
The apparatus as recited in claim 2, wherein said TDMA mobile radio signals comprise IS-136 based mobile radio signals.
Claim 5
Dependent Claim
19 words
The apparatus as recited in claim 2, wherein said TDMA mobile radio signals comprise IS-54 based mobile radio signals.
Claim 6
Dependent Claim
16 words
The apparatus as recited in claim 1, wherein said processing circuit comprises a digital signal processor.
Claim 7
Dependent Claim
17 words
The apparatus as recited in claim 1, wherein said weight generation circuit comprises a digital signal processor.
Claim 8
Independent Claim
70 words
A method for performance improvement of a digital wireless receiver comprising the steps of: processing a plurality of received signals; generating a plurality of weights based on a noise-plus-interference correlation matrix estimated as constant over a plurality of time slots; applying said plurality of weights to said plurality of received signals producing a plurality of weighted received signals; and combining said plurality of weighted received signals producing a processed signal.
Claim 9
Independent Claim
70 words
A method for performance improvement of a digital wireless receiver comprising the steps of: processing a plurality of received signals; generating a plurality of weights based on a noise-plus-interference correlation matrix estimated as constant over a plurality of time slots; applying said plurality of weights to said plurality of received signals producing a plurality of weighted received signals; and combining said plurality of weighted received signals producing a processed signal.
Claim 10
Dependent Claim
18 words
The method as recited in claim 7, wherein said plurality of received signals comprise TDMA mobile radio signals.
Claim 11
Dependent Claim
19 words
The method as recited in claim 8, wherein said TDMA mobile radio signals comprise IS-136 based mobile radio signals.
Claim 12
Dependent Claim
19 words
The method as recited in claim 8, wherein said TDMA mobile radio signals comprise IS-54 based mobile radio signals.
Claim 13
Dependent Claim
21 words
The method as recited in claim 7, wherein the step of generating a plurality of weights utilizes a digital signal processor.
Claim 14
Dependent Claim
69 words
A signal processor for a wireless receiver comprising: a weight generation circuit for generating a plurality of weights, wherein said plurality of weights are based on a noise-plus-interference correlation matrix estimated as varying slowly over a plurality of time slots; and, apparatus for combining a plurality of received signals with respective ones of the weight values to provide a processed signal as a substitute for an original received signal.
Claim 15
Dependent Claim
69 words
A signal processor for a wireless receiver comprising: a weight generation circuit for generating a plurality of weights, wherein said plurality of weights are based on a noise-plus-interference correlation matrix estimated as varying slowly over a plurality of time slots; and, apparatus for combining a plurality of received signals with respective ones of the weight values to provide a processed signal as a substitute for an original received signal.
Claim 16
Dependent Claim
28 words
The signal processor as recited in claim 12 wherein said noise-plus-interference correlation matrix is estimated as varying slower than a fading rate over a plurality of time slots.
Claim 17
Dependent Claim
28 words
The signal processor as recited in claim 12 wherein said noise-plus-interference correlation matrix is estimated as constant relative to a fading rate over a plurality of time slots.
References Cited (Backward Citations)
US5481570A
Cited
US5697083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-02-22 | 2002-08-24 | 2003-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-22 | 2006-08-24 | 2007-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-22 | 2010-08-24 | 2011-02-23 | $7700.00 | Window Closed / Lapsed |