DE60107932D1 - Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazu - Google Patents
Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazuInfo
- Publication number
- DE60107932D1 DE60107932D1 DE60107932T DE60107932T DE60107932D1 DE 60107932 D1 DE60107932 D1 DE 60107932D1 DE 60107932 T DE60107932 T DE 60107932T DE 60107932 T DE60107932 T DE 60107932T DE 60107932 D1 DE60107932 D1 DE 60107932D1
- Authority
- DE
- Germany
- Prior art keywords
- cdma receiver
- reception
- improving
- cdma
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
- H04L25/0214—Channel estimation of impulse response of a single coefficient
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/327—Received signal code power [RSCP]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01304709A EP1265384B1 (de) | 2001-05-29 | 2001-05-29 | Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazu |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60107932D1 true DE60107932D1 (de) | 2005-01-27 |
DE60107932T2 DE60107932T2 (de) | 2005-12-08 |
Family
ID=8181994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60107932T Expired - Lifetime DE60107932T2 (de) | 2001-05-29 | 2001-05-29 | Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazu |
Country Status (4)
Country | Link |
---|---|
US (1) | US7280499B2 (de) |
EP (1) | EP1265384B1 (de) |
JP (1) | JP4050552B2 (de) |
DE (1) | DE60107932T2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6816470B2 (en) | 2001-09-18 | 2004-11-09 | Interdigital Technology Corporation | Method and apparatus for interference signal code power and noise variance estimation |
US20040030530A1 (en) * | 2002-01-30 | 2004-02-12 | Kuo-Hui Li | Apparatus and method for detection of direct sequence spread spectrum signals in networking systems |
AU2003293212A1 (en) * | 2003-04-14 | 2004-11-19 | Bae Systems Information And Electronic Systems Integration Inc. | Joint symbol, amplitude, and rate estimator |
US20070189362A1 (en) * | 2004-03-24 | 2007-08-16 | Telecom Italia S.P.A. | Method and system for channel estimation, related receiver and computer program product |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5799011A (en) * | 1996-03-29 | 1998-08-25 | Motorola, Inc. | CDMA power control channel estimation using dynamic coefficient scaling |
JP3274388B2 (ja) * | 1997-07-25 | 2002-04-15 | 株式会社東芝 | Rake受信機とこのrake受信機を備えたスぺクトラム拡散通信装置 |
US6208632B1 (en) * | 1998-01-29 | 2001-03-27 | Sharp Laboratories Of America | System and method for CDMA channel estimation |
US6104747A (en) * | 1998-11-30 | 2000-08-15 | Motorola, Inc. | Method for determining optimum number of complex samples for coherent averaging in a communication system |
US6931050B1 (en) * | 1998-12-03 | 2005-08-16 | Ericsson Inc. | Digital receivers and receiving methods that scale for relative strengths of traffic and pilot channels during soft handoff |
JP2001333002A (ja) * | 2000-05-24 | 2001-11-30 | Ntt Docomo Inc | 移動通信システムにおける送信アンテナウェイト推定方法および移動通信端末 |
-
2001
- 2001-05-29 DE DE60107932T patent/DE60107932T2/de not_active Expired - Lifetime
- 2001-05-29 EP EP01304709A patent/EP1265384B1/de not_active Expired - Lifetime
-
2002
- 2002-04-29 US US10/134,843 patent/US7280499B2/en not_active Expired - Fee Related
- 2002-05-22 JP JP2002147976A patent/JP4050552B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1265384A1 (de) | 2002-12-11 |
DE60107932T2 (de) | 2005-12-08 |
JP4050552B2 (ja) | 2008-02-20 |
JP2003037581A (ja) | 2003-02-07 |
US20030031237A1 (en) | 2003-02-13 |
US7280499B2 (en) | 2007-10-09 |
EP1265384B1 (de) | 2004-12-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |