JP3961703B2 - Rake受信機、並びにrake受信機におけるフィンガー処理要素の割当て及び調整方法 - Google Patents
Rake受信機、並びにrake受信機におけるフィンガー処理要素の割当て及び調整方法 Download PDFInfo
- Publication number
- JP3961703B2 JP3961703B2 JP01680399A JP1680399A JP3961703B2 JP 3961703 B2 JP3961703 B2 JP 3961703B2 JP 01680399 A JP01680399 A JP 01680399A JP 1680399 A JP1680399 A JP 1680399A JP 3961703 B2 JP3961703 B2 JP 3961703B2
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- Prior art keywords
- signal
- timing offset
- rake receiver
- finger
- timing
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- Expired - Fee Related
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- 238000012545 processing Methods 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 46
- 238000005259 measurement Methods 0.000 claims description 63
- 238000012937 correction Methods 0.000 claims description 30
- 238000001228 spectrum Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 20
- 238000005070 sampling Methods 0.000 claims description 14
- 238000009795 derivation Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 238000005314 correlation function Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70757—Synchronisation aspects with code phase acquisition with increased resolution, i.e. higher than half a chip
-
- 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
- H04B1/7113—Determination of path profile
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/012,953 US6269075B1 (en) | 1998-01-26 | 1998-01-26 | Finger assignment in a CDMA rake receiver |
| US09/012953 | 1998-01-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH11261528A JPH11261528A (ja) | 1999-09-24 |
| JPH11261528A5 JPH11261528A5 (enExample) | 2005-03-03 |
| JP3961703B2 true JP3961703B2 (ja) | 2007-08-22 |
Family
ID=21757546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01680399A Expired - Fee Related JP3961703B2 (ja) | 1998-01-26 | 1999-01-26 | Rake受信機、並びにrake受信機におけるフィンガー処理要素の割当て及び調整方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6269075B1 (enExample) |
| EP (1) | EP0932263A3 (enExample) |
| JP (1) | JP3961703B2 (enExample) |
| KR (1) | KR19990067991A (enExample) |
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| US5293870A (en) * | 1989-11-17 | 1994-03-15 | Board Of Regents The University Of Texas System | Method and apparatus for elastographic measurement and imaging |
| US5590160A (en) | 1992-12-30 | 1996-12-31 | Nokia Mobile Phones Ltd. | Symbol and frame synchronization in both a TDMA system and a CDMA |
| FI932605A7 (fi) | 1993-06-07 | 1994-12-08 | Nokia Telecommunications Oy | Tukiasemavastaanotinlaitteisto |
| FI110043B (fi) | 1993-09-20 | 2002-11-15 | Nokia Corp | Menetelmä kanavanvaihdon suorittamiseksi CDMA-solukkoradiojärjestelmässä sekä liikkuva asema |
| US5490165A (en) * | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
| GB2293730B (en) * | 1994-09-28 | 1998-08-05 | Roke Manor Research | Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit |
| US5654979A (en) * | 1995-01-13 | 1997-08-05 | Qualcomm Incorporated | Cell site demodulation architecture for a spread spectrum multiple access communication systems |
| US5648983A (en) | 1995-04-24 | 1997-07-15 | Lucent Technologies Inc. | CDMA rake receiver with sub-chip resolution |
| US5703902A (en) * | 1995-06-16 | 1997-12-30 | Qualcomm Incorporated | Method and apparatus for determining signal strength in a variable data rate system |
| US5809020A (en) * | 1996-03-18 | 1998-09-15 | Motorola, Inc. | Method for adaptively adjusting weighting coefficients in a cDMA radio receiver |
| US5881056A (en) * | 1996-08-20 | 1999-03-09 | Lucent Technologies Inc. | Method and apparatus of a multi-code code division multiple access receiver having shared accumulator circuits |
| US5889768A (en) * | 1996-08-30 | 1999-03-30 | Motorola, Inc. | Method of and apparatus for pilot channel acquisition |
| US5926503A (en) * | 1997-08-27 | 1999-07-20 | Motorola, Inc. | DS-CDMA receiver and forward link diversity method |
-
1998
- 1998-01-26 US US09/012,953 patent/US6269075B1/en not_active Expired - Lifetime
-
1999
- 1999-01-19 KR KR1019990001500A patent/KR19990067991A/ko not_active Withdrawn
- 1999-01-21 EP EP99300419A patent/EP0932263A3/en not_active Withdrawn
- 1999-01-26 JP JP01680399A patent/JP3961703B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990067991A (ko) | 1999-08-25 |
| EP0932263A3 (en) | 2001-10-10 |
| EP0932263A2 (en) | 1999-07-28 |
| US6269075B1 (en) | 2001-07-31 |
| JPH11261528A (ja) | 1999-09-24 |
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