WO1997044919B1 - Process and device for the increase of subscriber capacity in a cellular mobile radio network - Google Patents

Process and device for the increase of subscriber capacity in a cellular mobile radio network

Info

Publication number
WO1997044919B1
WO1997044919B1 PCT/AT1997/000105 AT9700105W WO9744919B1 WO 1997044919 B1 WO1997044919 B1 WO 1997044919B1 AT 9700105 W AT9700105 W AT 9700105W WO 9744919 B1 WO9744919 B1 WO 9744919B1
Authority
WO
WIPO (PCT)
Prior art keywords
decision
mlse
feedback
data detection
subscriber
Prior art date
Application number
PCT/AT1997/000105
Other languages
German (de)
French (fr)
Other versions
WO1997044919A1 (en
Filing date
Publication date
Priority claimed from AT0088896A external-priority patent/AT408933B/en
Application filed filed Critical
Priority to US09/194,387 priority Critical patent/US6345075B1/en
Priority to EP97921521A priority patent/EP0900484B1/en
Priority to AU27568/97A priority patent/AU2756897A/en
Priority to AT97921521T priority patent/ATE205343T1/en
Priority to DE59704538T priority patent/DE59704538D1/en
Priority to CA002255767A priority patent/CA2255767C/en
Publication of WO1997044919A1 publication Critical patent/WO1997044919A1/en
Publication of WO1997044919B1 publication Critical patent/WO1997044919B1/en

Links

Abstract

For each K subscriber of a cellular mobile radio network who is supplied with one and the same frequency and one and the same time slot a decision-feedback and therefore non-linear antenna pre-processing facility with a decision-feedback structure is used comprising forward filters (101) backward filters (12) and decision circuits (40) for the adaptation of the antenna weighting factors (W11 to WMR), wherein the backward filters (12) are adapted to the length of the processing window D of MLSE (200), and the output signals of the (SFFF) forward filters (101) for the actual data detection are taken to the MLSE (200) of the subscriber concerned, before the subtraction of the feedback (SFBF) component takes place. Each of the receiver structures similar to K can be adapted and operated independently from the other K-1 structures. A common vectorial MLSE for the common data detection of all K subscribers can be employed.

Claims

9GEÄNDERTE ANSPRÜCHE[beim Internationalen Büro am 18. November 1997 (18.11.97); ursprünglicher Anspruch 3 geändert; neuer Anspruch 4 hinzugefügt; alle weiteren Ansprüche unverändert (1 Seite)] CHANGED CLAIMS [to the International Bureau on 18 November 1997 (18.11.97); original claim 3 changed; new claim 4 added; all other claims unchanged (1 page)]
1. Verfahren und Vorrichtung zur Erhöhung der Teilnehmerkapazität in einem zellularen Mobilfunknetz, die eine phasengesteuerte Gruppenantenne, versehen mit einer Schaltung zur adaptiven Beeinflussung der Antennengewichtsfak- toren (Richtcharakteristik), aufweist, dadurch gekennzeichnet, daß für jeden der K-Teilnehmer, die auf em- und derselben Frequenz und ein- und demselben Zeitschlitz versorgt werden, eine entscheidungsrückgekoppelte, also nichtlineare Antennen-Vorverarbeitung mittels entschei- dungsrückgekoppelter Struktur, bestehend aus Vorwärtsfilter (101-k), Rückwärtsfilter (12-k) und Entscheider (40- k), zur Adaption der Antennengewichtsfaktoren (wn-k bis WMR-k) eingesetzt wird, wobei das Rückwärtsfilter (12-k) auf die Verarbeitungsfensterlänge D der MLSE (200-k) an- gepaßt ist, und für die tatsächliche Datendetektion das Ausgangssignal der Vorwä^tsf ilterstruktur (101-k) SFFF- vor der Subtraktion des rückgekoppelten Anteils SpBF-k einem dem jeweiligen Teilnehmer zugeordneten MLSE (200-k) zugeführt wird. 1. A method and device for increasing the subscriber capacity in a cellular mobile radio network having a phased array antenna provided with a circuit for adaptively influencing the Antennengewichtsfak- toren (directional characteristic), characterized in that for each of the K-subscribers, the em on - and the same frequency and one and the same time slot are supplied, a decision-feedback, so non-linear antenna preprocessing means decision-feedback structure consisting of forward filter (101-k), backward filter (12-k) and decision (40- k), is used to adapt the antenna weight factors (wn- k to W MR -k) with the backward filter (12-k) fitted to the processing window length D of the MLSE (200-k), and for the actual data detection the output of the preweet ^ tsf ilterstruktur (101-k) S FFF - before the subtraction of the feedback component Sp BF - k one the respective T subscriber assigned MLSE (200-k) is supplied.
2. Verfahren und Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede dieser K gleichartigen Empfängerstrukturen parallel und unabhängig von den anderen K-1- Strukturen adaptiert und betrieben wird.2. The method and apparatus according to claim 1, characterized in that each of these K similar receiver structures is adapted and operated in parallel and independently of the other K-1 structures.
3. Abänderung des Verfahrens und der Vorrichtung nach An- spruch 1 und/oder 2, dadurch gekennzeichnet, daß ein gemeinsamer vektorieller MLSE (201) für die gemeinsame Datendetektion aller K-Teilnehmer eingesetzt wird.3. Modification of the method and the device according to claim 1 and / or 2, characterized in that a common vectorial MLSE (201) is used for the common data detection of all K-subscribers.
4. Abänderung des Verfahrens und der Vorrichtung nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß nur eine entscheidungsrückgekoppelte Struktur vorgesehen ist, die alle bedienten Teilnehmer im Zei tmultiplexverfahren abarbeitet . 4. Modification of the method and the device according to one of claims 1-3, characterized in that only one decision-feedback structure is provided, which handles all operated participants in Zei tmultiplexverfahren.
PCT/AT1997/000105 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network WO1997044919A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US09/194,387 US6345075B1 (en) 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network
EP97921521A EP0900484B1 (en) 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network
AU27568/97A AU2756897A (en) 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network
AT97921521T ATE205343T1 (en) 1996-05-20 1997-05-20 METHOD AND DEVICE FOR INCREASE THE SUBSCRIBER CAPACITY IN A CELLULAR MOBILE NETWORK
DE59704538T DE59704538D1 (en) 1996-05-20 1997-05-20 METHOD AND DEVICE FOR INCREASING THE PARTICIPANT CAPACITY IN A CELLULAR MOBILE NETWORK
CA002255767A CA2255767C (en) 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0088896A AT408933B (en) 1996-05-20 1996-05-20 METHOD AND DEVICE FOR INCREASING THE SUBSCRIBER CAPACITY OF CELLULAR MOBILE RADIO NETWORKS
ATA888/96 1996-05-20

Publications (2)

Publication Number Publication Date
WO1997044919A1 WO1997044919A1 (en) 1997-11-27
WO1997044919B1 true WO1997044919B1 (en) 1998-01-08

Family

ID=3502146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1997/000105 WO1997044919A1 (en) 1996-05-20 1997-05-20 Process and device for the increase of subscriber capacity in a cellular mobile radio network

Country Status (7)

Country Link
US (1) US6345075B1 (en)
EP (1) EP0900484B1 (en)
AT (2) AT408933B (en)
AU (1) AU2756897A (en)
CA (1) CA2255767C (en)
DE (1) DE59704538D1 (en)
WO (1) WO1997044919A1 (en)

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EP0948081A1 (en) * 1998-04-03 1999-10-06 Lucent Technologies Inc. Diversity antenna system
EP0948082A1 (en) * 1998-04-03 1999-10-06 Lucent Technologies Inc. Adaptive antenna
GB2356771A (en) * 1999-11-24 2001-05-30 Motorola Ltd Signal measurement in a second capsule within a cell by a first capsule whilst it is servicing a call
EP1150441B1 (en) * 2000-04-25 2014-03-26 Alcatel Lucent Method and receiver for combining at least two received signals of a telecommunication system
DE10025287B4 (en) * 2000-05-22 2006-06-08 Siemens Ag A method and communication system for estimating a downlink interference covariance matrix in cellular mobile radio networks using adaptive antennas
US20030123486A1 (en) * 2001-12-31 2003-07-03 Globespanvirata Incorporated System and method for utilizing power management functionality between DSL peers
DE10327896A1 (en) * 2003-06-20 2005-01-05 Siemens Ag Method for determining an antenna weighting factor
JP5105834B2 (en) * 2006-11-17 2012-12-26 キヤノン株式会社 CONTROL DEVICE AND ITS CONTROL METHOD, COMMUNICATION DEVICE AND ITS CONTROL METHOD, COMMUNICATION SYSTEM, AND PROGRAM

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US4079381A (en) * 1976-11-22 1978-03-14 Motorola, Inc. Null steering apparatus for a multiple antenna array on an AM receiver
US5263026A (en) * 1991-06-27 1993-11-16 Hughes Aircraft Company Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver
CA2076099A1 (en) * 1991-09-03 1993-03-04 Howard Leroy Lester Automatic simulcast alignment
DE4134357A1 (en) * 1991-10-17 1993-04-22 Standard Elektrik Lorenz Ag MESSAGE TRANSFER SYSTEM
US5592490A (en) * 1991-12-12 1997-01-07 Arraycomm, Inc. Spectrally efficient high capacity wireless communication systems
US5515378A (en) * 1991-12-12 1996-05-07 Arraycomm, Inc. Spatial division multiple access wireless communication systems
US5566209A (en) * 1994-02-10 1996-10-15 Telefonaktiebolaget Lm Ericsson Transceiver algorithms of antenna arrays
US5548813A (en) * 1994-03-24 1996-08-20 Ericsson Inc. Phased array cellular base station and associated methods for enhanced power efficiency
US5608409A (en) * 1995-03-28 1997-03-04 Rilling; Kenneth F. Adaptive array with automatic loop gain control
WO1997044855A1 (en) * 1996-05-20 1997-11-27 Post Und Telekom Austria Aktiengesellschaft Process and device for reception with directional resolution
IT1284712B1 (en) * 1996-07-29 1998-05-21 Roberto Cusani MAP RECEIVER FOR HIGH SPEED NUMERICAL TRANSMISSIONS THROUGH NOISY AND DISPERSIVE RAYLEIGH CHANNELS IN TIME AND FREQUENCY.
FR2758926B1 (en) * 1997-01-24 1999-04-30 France Telecom METHOD OF MULTI-SENSOR EQUALIZATION IN A RADIOELECTRIC RECEIVER HAVING A DETERMINED NUMBER OF RECEPTION PATHWAYS AND CORRESPONDING RECEIVER

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