TW200708144A - Transmit spatial diversity for cellular single frequency networks - Google Patents
Transmit spatial diversity for cellular single frequency networksInfo
- Publication number
- TW200708144A TW200708144A TW095121239A TW95121239A TW200708144A TW 200708144 A TW200708144 A TW 200708144A TW 095121239 A TW095121239 A TW 095121239A TW 95121239 A TW95121239 A TW 95121239A TW 200708144 A TW200708144 A TW 200708144A
- Authority
- TW
- Taiwan
- Prior art keywords
- streams
- benefit
- ues
- mimo
- cell
- Prior art date
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Multiple-In Multiple-Out (MIMO) techniques are used to increase spectral efficiency of a cellular single frequency network. In some embodiments with single transmit antenna per cell, multiple data streams are transmitted from multiple cells, one data stream per set of transmit antennae. The mapping of streams to antenna sets is permuted in time. In this way, user equipment devices (UEs) at cell edges benefit from MIMO, and UEs near cell centers benefit from high carrier-to-interference (C/I) ratio of the signal. In some embodiments, each stream is concurrently transmitted on base layer of a hierarchically modulated signal from one set, and on enhancement layer of a hierarchically modulated signal from another set. The mapping of sets to streams is permuted in time. The UEs at cell edges benefit from MIMO, and the UEs near cell centers benefit from the high C/I to decode both streams from the base and enhancement layers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69062205P | 2005-06-14 | 2005-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200708144A true TW200708144A (en) | 2007-02-16 |
TWI322632B TWI322632B (en) | 2010-03-21 |
Family
ID=39921199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW95121239A TWI322632B (en) | 2005-06-14 | 2006-06-14 | Transmit spatial diversity for cellular single frequency networks |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN101238648B (en) |
MY (1) | MY143501A (en) |
TW (1) | TWI322632B (en) |
Families Citing this family (38)
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US11309943B2 (en) | 2004-04-02 | 2022-04-19 | Rearden, Llc | System and methods for planned evolution and obsolescence of multiuser spectrum |
US10886979B2 (en) | 2004-04-02 | 2021-01-05 | Rearden, Llc | System and method for link adaptation in DIDO multicarrier systems |
US10985811B2 (en) | 2004-04-02 | 2021-04-20 | Rearden, Llc | System and method for distributed antenna wireless communications |
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US10425134B2 (en) | 2004-04-02 | 2019-09-24 | Rearden, Llc | System and methods for planned evolution and obsolescence of multiuser spectrum |
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US11835639B2 (en) | 2011-08-03 | 2023-12-05 | Qualcomm Technologies, Inc. | Partially synchronized multilateration or trilateration method and system for positional finding using RF |
CN104322025B (en) * | 2012-05-18 | 2019-01-04 | 李尔登公司 | Enhance the system and method for the space diversity in the wireless system of distributing input distributing output |
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US11190947B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for concurrent spectrum usage within actively used spectrum |
US11050468B2 (en) | 2014-04-16 | 2021-06-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
US11189917B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for distributing radioheads |
US10194346B2 (en) | 2012-11-26 | 2019-01-29 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US10164698B2 (en) | 2013-03-12 | 2018-12-25 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US9923657B2 (en) | 2013-03-12 | 2018-03-20 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US10488535B2 (en) | 2013-03-12 | 2019-11-26 | Rearden, Llc | Apparatus and method for capturing still images and video using diffraction coded imaging techniques |
US9973246B2 (en) | 2013-03-12 | 2018-05-15 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
US10547358B2 (en) | 2013-03-15 | 2020-01-28 | Rearden, Llc | Systems and methods for radio frequency calibration exploiting channel reciprocity in distributed input distributed output wireless communications |
CN104348566B (en) * | 2013-07-25 | 2017-12-05 | 上海数字电视国家工程研究中心有限公司 | It is layered SFN network and its network-building method |
US11290162B2 (en) | 2014-04-16 | 2022-03-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
KR102166578B1 (en) * | 2014-08-01 | 2020-10-19 | 폴테 코포레이션 | Partially synchronized multilateration/trilateration method and system for positional finding using rf |
FR3056864B1 (en) * | 2016-09-26 | 2020-03-13 | Safran Electronics & Defense | METHOD FOR SELECTING AN ANTENNA |
US11255945B2 (en) | 2018-03-27 | 2022-02-22 | Polte Corporation | Multi-path mitigation in tracking objects using compressed RF data |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6862456B2 (en) * | 2002-03-01 | 2005-03-01 | Cognio, Inc. | Systems and methods for improving range for multicast wireless communication |
GB2408172B (en) * | 2003-11-12 | 2007-11-14 | Ipwireless Inc | Method and apparatus for improved throughput in a communication system |
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2006
- 2006-06-09 CN CN200680028682.0A patent/CN101238648B/en active Active
- 2006-06-13 MY MYPI20062785 patent/MY143501A/en unknown
- 2006-06-14 TW TW95121239A patent/TWI322632B/en active
Also Published As
Publication number | Publication date |
---|---|
CN101238648A (en) | 2008-08-06 |
TWI322632B (en) | 2010-03-21 |
CN101238648B (en) | 2013-03-20 |
MY143501A (en) | 2011-05-31 |
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