Title:
METHOD FOR FREQUENCY DIVISION DUPLEX COMMUNICATIONS
Document Type and Number:
WIPO Patent Application WO1998035463
Kind Code:
A3
Abstract:
The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequency division duplex (FDD), time division multiple access (TDMA), orthogonal frequency division multiplexing (OFDM), spatial diversity, and polarization diversity in various unique combinations. The method provides excellent fade resistance. The method enables changing a user's available bandwidth on demand by assigning additional TDMA slots during the user's session.
Inventors:
ALAMOUTI SIAVASH
CASAS EDUARDO F
HIRANO MICHAEL
HOOLE ELLIOTT
JESSE MARY
MICHELSON DAVID G
POON PATRICK
VEINTIMILLA GREGORY J
ZHANG HONGLIANG
CASAS EDUARDO F
HIRANO MICHAEL
HOOLE ELLIOTT
JESSE MARY
MICHELSON DAVID G
POON PATRICK
VEINTIMILLA GREGORY J
ZHANG HONGLIANG
Application Number:
PCT/US1998/002250
Publication Date:
April 22, 1999
Filing Date:
February 03, 1998
Export Citation:
Assignee:
AT & T WIRELESS SERVICES INC (US)
International Classes:
H04B7/08; H04B7/10; H04B7/24; H04B7/26; H04J1/00; H04J3/00; H04J99/00; H04J3/06; H04J11/00; H04L1/06; H04L5/02; H04L5/14; H04W74/00; H04W16/14; H04W72/04; H04W72/08; H04W74/04; (IPC1-7): H04L5/02; H04L1/06; H04B7/06; H04B7/08; H04B7/10; H04B7/26
Domestic Patent References:
| WO1994019877A1 | 1994-09-01 | |||
| WO1997001256A1 | 1997-01-09 | |||
| WO1994013077A1 | 1994-06-09 | |||
| WO1996036136A1 | 1996-11-14 |
Foreign References:
| EP0641096A1 | 1995-03-01 | |||
| EP0685973A2 | 1995-12-06 | |||
| EP0653859A1 | 1995-05-17 | |||
| US5410538A | 1995-04-25 | |||
| US5260968A | 1993-11-09 |
Other References:
OJANPERÄ ET AL.: "FRAMES-hybrid multiple access technology", 1996 IEEE 4TH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES, vol. 1, 22 September 1996 (1996-09-22) - 25 September 1996 (1996-09-25), New York, NY, USA, IEEE, USA, pages 320 - 324, XP002077020
ROHLING H ET AL: "PERFORMANCE OF AN OFDM-TDMA MOBILE COMMUNICATION SYSTEM", 1996 IEEE 46TH. VEHICULAR TECHNOLOGY CONFERENCE, MOBILE TECHNOLOGY FOR THE HUMAN RACE ATLANTA, APR. 28 - MAY 1, 1996, vol. 3, no. CONF. 46, 28 April 1996 (1996-04-28), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1589 - 1593, XP000595799
GINER V C: "An Approximate Analysis of TDMA Out-of-Slot Random Access Protocols for Microcellular Mobile Communications", INTERNATIONAL JOURNAL OF WIRELESS INFORMATION NETWORKS, vol. 3, no. 1, January 1996 (1996-01-01), Plenum, USA, pages 41 - 53, XP002077581
CIMINI L J ET AL.: "OFDM with diversity and coding for high-bit-rate mobile data applications", MOBILE MULTIMEDIA COMMUNICATIONS, PROCEEDINGS OF 3RD INTERNATIONAL WORKSHOP ON MOBILE MULTIMEDIA COMMUNICATIONS, 25 September 1996 (1996-09-25) - 27 September 1996 (1996-09-27), Princeton, NJ, USA, pages 247 - 254, XP002093338
TAKAHASHI H ET AL: "ANTENNA AND MULTI-CARRIER COMBINED DIVERSITY SYSTEM", IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E79B, no. 9, September 1996 (1996-09-01), pages 1221 - 1226, XP000636058
DE BOT P G M: "Antenna Diversity for OFDM Systems", PROCEEDINGS OF THE FOURTEENTH SYMPOSIUM ON INFORMATION THEORY IN THE BENELUX, 17 May 1993 (1993-05-17) - 18 May 1993 (1993-05-18), Veldhoven, The Netherlands, pages 244 - 251, XP002093339
ROHLING H ET AL: "PERFORMANCE OF AN OFDM-TDMA MOBILE COMMUNICATION SYSTEM", 1996 IEEE 46TH. VEHICULAR TECHNOLOGY CONFERENCE, MOBILE TECHNOLOGY FOR THE HUMAN RACE ATLANTA, APR. 28 - MAY 1, 1996, vol. 3, no. CONF. 46, 28 April 1996 (1996-04-28), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1589 - 1593, XP000595799
GINER V C: "An Approximate Analysis of TDMA Out-of-Slot Random Access Protocols for Microcellular Mobile Communications", INTERNATIONAL JOURNAL OF WIRELESS INFORMATION NETWORKS, vol. 3, no. 1, January 1996 (1996-01-01), Plenum, USA, pages 41 - 53, XP002077581
CIMINI L J ET AL.: "OFDM with diversity and coding for high-bit-rate mobile data applications", MOBILE MULTIMEDIA COMMUNICATIONS, PROCEEDINGS OF 3RD INTERNATIONAL WORKSHOP ON MOBILE MULTIMEDIA COMMUNICATIONS, 25 September 1996 (1996-09-25) - 27 September 1996 (1996-09-27), Princeton, NJ, USA, pages 247 - 254, XP002093338
TAKAHASHI H ET AL: "ANTENNA AND MULTI-CARRIER COMBINED DIVERSITY SYSTEM", IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E79B, no. 9, September 1996 (1996-09-01), pages 1221 - 1226, XP000636058
DE BOT P G M: "Antenna Diversity for OFDM Systems", PROCEEDINGS OF THE FOURTEENTH SYMPOSIUM ON INFORMATION THEORY IN THE BENELUX, 17 May 1993 (1993-05-17) - 18 May 1993 (1993-05-18), Veldhoven, The Netherlands, pages 244 - 251, XP002093339
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