CN101133562A - 邻小区用户信号干扰抑制方法 - Google Patents
邻小区用户信号干扰抑制方法 Download PDFInfo
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- CN101133562A CN101133562A CNA2005800487581A CN200580048758A CN101133562A CN 101133562 A CN101133562 A CN 101133562A CN A2005800487581 A CNA2005800487581 A CN A2005800487581A CN 200580048758 A CN200580048758 A CN 200580048758A CN 101133562 A CN101133562 A CN 101133562A
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- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03305—Joint sequence estimation and interference removal
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- 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
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7105—Joint detection techniques, e.g. linear detectors
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- 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
- H04L25/0204—Channel estimation of multiple channels
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03331—Arrangements for the joint estimation of multiple sequences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70702—Intercell-related aspects
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (9)
- 权 利 要 求 书1、 一种邻小区用户信号干扰抑制方法,其特征在于, 包括如下步骤- 对本小区用户信号和邻小区用户信号做信道估计,估计出本小区用户 与邻小区用户的信道冲激响应;根据所述各小区的信道冲激响应, 对各小区的用户信号进行联合检 测, 得到各小区用户的符号。 2、 如权利要求 1所述的方法,其特征在于, 所述的信道估计步骤, 包括如下步骤:根据接收到码片级采样信号,对本小区与邻小区分别做初步的信道估 计;对本小区与邻小区初步的信道估计分别做信道后处理,以估计所述各 小区用户的信号径的时延位置。
- 3、 如权利要求 2所述的方法, 其特征在于, 更包括如下步骤: 联合估计所述各小区的信道冲激响应,以消除各小区用户之间的信道 估计干扰。
- 4、 如权利要求 3所述的方法,其特征在于, 所述的联合估计步骤, 更包括如下步骤:根据所述各小区用户的信号径时延位置, 构成矩阵 ;根据矩阵 Mcomp进行所述各小区的联合估计。
- 5、 如权利要求 1所述的方法,其特征在于, 所述的联合检测步骤, 包括如下步骤: 确定本小区和邻小区的扰码与扩频码;根据所述各小区的信道冲激响应以及扰码与扩频码, 合成矩阵 4 根据所述矩阵 Ac 对各个小区的用户信号做联合检测, 得到各小区用 户的符号^ comp
- 6、 如权利要求 2所述的方法,其特征在于, 所述的初步的信道估计步骤, 使用的方法为:其中, ht,i = 0,..., N ·'M。表示本小区的训练序列矩阵, M,., = 1,...,N表示希望消除干扰的 N 个邻小区的训练序列矩阵, 表示各种干扰和噪声, 是本小区用户的信 道冲激响应, ¾,i = l, ...,N是 N个邻小区用户的信道冲激响应。
- 7、 如权利要求 6所述的方法,其特征在于,所述的对本小区与邻小区初步的信道估计分别做信道后 处理步骤, 其中, 对本小区的信道后处理步骤包括:将 的 128个抽头 ( μ = 1, ...,128的功率与一个门限进行比较, 低于 门限的抽头认为是噪声, 其质置为零, 高于门限的抽头认为是信号, 其值 保留;设经过信道后处理之后, 信号抽头个数为 LQ, 则信号抽头的位置为? ^2? ' " '? },对邻小区的信道后处理步骤包括:将 ,Z'-1,...,N的 128个抽头 ¾ ( μ = 1,...,128的功率与一个门限进行比 较, 低于门限的抽头认为是噪声, 其质置为零, 高于门限的抽头认为是信 号, 其值保留; 得出用户信号径的抽头位置 ^ …^^^,…, N ;如果 I! > 128 - L0, 则取功率最大的 128-^°个抽头位置。;=1
- 8、 如权利要求 4所述的方法,其特征在于, 所述的联合估计步骤, 使用的方法为:h yMH M V j MH e ;,其中 M∞mp是一个合成矩阵, 维数是 128X ', 其构成方式为: 取矩 阵^的以下列^ ,..., }, = 0,..., 合并在一起, 构成 。^是合成信道冲激响应, 维数是 i'xi, 其中包含了本小区用户的 信道冲激响应和 N个邻小区用户的信道冲激响应。
- 9、 如权利要求 5所述的方法,其特征在于, 所述的联合检测步骤, 其方程表示为:;=1d0[ "■ w]: Acompdcomp + nd其中 4, = o,...,N是各个小区的系统矩阵, 由各个小区的用户的扩频 码、 扰码和信道冲激响应构成;对 ^进行估计, 可以用迫零块线性均衡估计或最小均方误差块线性 均衡估计法, 其中,迫零块线性均衡估计:- ( ΔΗ R-1 A 1 ΛΗ R~le .,最小均方误差块线性均衡估计:其中 R"是干扰噪声 的自相关矩阵, 是信号 d。。^的自相关矩阵。
- 10、 如权利要求 5所述的方法,其特征在于, 所述的确定本小区和邻小区的扰码与扩频码步骤, 当邻 小区与本小区有不同的基站时,无线网络控制器利用信令交互来得到所述 扰码与扩频码。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2005/001209 WO2007016811A1 (fr) | 2005-08-08 | 2005-08-08 | Procédé de limitation des interférences de signal des utilisateurs des cellules voisines |
Publications (2)
Publication Number | Publication Date |
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CN101133562A true CN101133562A (zh) | 2008-02-27 |
CN101133562B CN101133562B (zh) | 2010-10-13 |
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Application Number | Title | Priority Date | Filing Date |
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CN2005800487581A Expired - Fee Related CN101133562B (zh) | 2005-08-08 | 2005-08-08 | 邻小区用户信号干扰抑制方法 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1921757A4 (zh) |
CN (1) | CN101133562B (zh) |
WO (1) | WO2007016811A1 (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101605382B (zh) * | 2008-06-13 | 2011-03-30 | 大唐移动通信设备有限公司 | 小区间干扰协调方法、装置 |
CN102647387A (zh) * | 2012-04-09 | 2012-08-22 | 华为技术有限公司 | 同频干扰的消除方法及装置 |
CN103905086A (zh) * | 2012-12-26 | 2014-07-02 | 联芯科技有限公司 | 联合检测方法及系统 |
CN114553338A (zh) * | 2022-02-25 | 2022-05-27 | 哲库科技(北京)有限公司 | 干扰信号确定方法、装置、电子设备和可读存储介质 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201001482D0 (en) | 2010-01-29 | 2010-03-17 | Icera Inc | A cellular communications system |
US8577304B2 (en) | 2007-10-31 | 2013-11-05 | Icera, Inc. | Synchronous CDMA communication system |
GB0721423D0 (en) | 2007-10-31 | 2007-12-12 | Icera Inc | A synchronous cdma communication system |
CN101741412B (zh) * | 2008-11-19 | 2013-06-05 | 中兴通讯股份有限公司 | 一种扩频码的构造方法及多小区联合检测方法 |
CN106162726A (zh) * | 2015-03-25 | 2016-11-23 | 鼎桥通信技术有限公司 | 一种td-scdma系统中的多小区联合检测方法 |
CN111245761B (zh) * | 2020-01-09 | 2022-05-31 | 北京航空航天大学杭州创新研究院 | 一种noma上行链路自适应数据接收方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6339612B1 (en) * | 1998-02-09 | 2002-01-15 | Motorola, Inc. | Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |
JP2000261412A (ja) * | 1999-03-06 | 2000-09-22 | Matsushita Electric Ind Co Ltd | 干渉信号除去装置 |
CN1283110C (zh) * | 2002-07-10 | 2006-11-01 | 西门子(中国)有限公司 | 干扰功率估计设备及其方法、及干扰功率检测系统 |
US20040116122A1 (en) * | 2002-09-20 | 2004-06-17 | Interdigital Technology Corporation | Enhancing reception using intercellular interference cancellation |
CN1170389C (zh) * | 2002-11-13 | 2004-10-06 | 大唐移动通信设备有限公司 | 在联合检测系统中应用长小区化码的方法 |
-
2005
- 2005-08-08 CN CN2005800487581A patent/CN101133562B/zh not_active Expired - Fee Related
- 2005-08-08 WO PCT/CN2005/001209 patent/WO2007016811A1/zh active Application Filing
- 2005-08-08 EP EP05772472A patent/EP1921757A4/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101605382B (zh) * | 2008-06-13 | 2011-03-30 | 大唐移动通信设备有限公司 | 小区间干扰协调方法、装置 |
CN102647387A (zh) * | 2012-04-09 | 2012-08-22 | 华为技术有限公司 | 同频干扰的消除方法及装置 |
CN102647387B (zh) * | 2012-04-09 | 2015-09-09 | 华为技术有限公司 | 同频干扰的消除方法及装置 |
CN103905086A (zh) * | 2012-12-26 | 2014-07-02 | 联芯科技有限公司 | 联合检测方法及系统 |
CN103905086B (zh) * | 2012-12-26 | 2016-07-20 | 联芯科技有限公司 | 联合检测方法及系统 |
CN114553338A (zh) * | 2022-02-25 | 2022-05-27 | 哲库科技(北京)有限公司 | 干扰信号确定方法、装置、电子设备和可读存储介质 |
Also Published As
Publication number | Publication date |
---|---|
WO2007016811A1 (fr) | 2007-02-15 |
CN101133562B (zh) | 2010-10-13 |
EP1921757A1 (en) | 2008-05-14 |
EP1921757A4 (en) | 2010-07-07 |
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Application publication date: 20080227 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Method for restraining user signal interference from neighbor subdistrict Granted publication date: 20101013 License type: Common License Record date: 20151123 |
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