公开(公告)号：EP2605415A1

公开(公告)日：2013-06-19

申请号：EP13159153.9

申请日：2005-10-04

申请人： Telefonaktiebolaget L M Ericsson AB (Publ)

发明人： Cairns, Douglas ,  Bottomley, Gregory ,  Khayrallah, Ali

IPC分类号： H04B1/7117 ,  H04B1/712

CPC分类号： H04B1/712 ,  H04B1/709 ,  H04B1/7117 ,  H04B2201/709727

摘要： Channel and correlation characteristics are determined for a composite signal. Respective combining weights for information from the composite signal are determined for respective ones of a plurality of candidate delays based on the determined channel and correlation characteristics. A group of delays, e.g., RAKE correlator delays or chip equalizer filter taps, is selected from the plurality of candidate delays based on the determined weights. Information from the composite signal for the selected delays is processed according to a spreading code to generate a symbol estimate. The invention may be embodied as methods, apparatus and computer program products.

摘要翻译： 信道和相关特征是确定性的开采的复合信号。 用于从所述复合信号中的信息的组合权重被确定开采用于基于所述确定的信道开采和相关特征的候选延迟的多个respectivement的。 A组的延迟，E. G.，RAKE相关器延迟或码片均衡滤波器抽头，从候选延迟的基础上确定的权重挖掘选择的多个。 从所选择的延迟的复合信号的信息被雅丁加工成扩展码，以产生符号估计。 本发明可以体现为方法，设备和计算机程序产品。

公开(公告)号：EP1317833B1

公开(公告)日：2013-04-17

申请号：EP01965855.8

申请日：2001-07-31

申请人： Intel Mobile Communications GmbH

发明人： MEDLOCK, Joel, D. ,  RIEKEN, Keith ,  HOLMES, David, M.

IPC分类号： H04B1/7117 ,  H04B1/707

CPC分类号： H04B1/7117 ,  H04B2201/70707

公开(公告)号：EP1883166B1

公开(公告)日：2012-08-01

申请号：EP06756571.3

申请日：2006-05-18

申请人： NEC Corporation

发明人： TAMURA, Koichi

IPC分类号： H04B1/7117

CPC分类号： H04B1/7117

摘要： A CDMA mobile communication demodulator circuit has a path timing comparison part 4 operable to compare a difference between path timings of adjacent paths with a predetermined threshold value, a path level comparison part 5 operable to compare power correlation values of the path timings of the paths determined to be controlled with a maximum power correlation value between those path timings, and a path timing determination part 3 operable to control the finger assignment timings based on the comparison results. By adaptively controlling finger assignment timings in accordance with a power correlation peak value obtained by a delay profile calculation, good receiving characteristics can be maintained, and electric power consumption can be reduced.

公开(公告)号：EP1564899A4

公开(公告)日：2009-12-02

申请号：EP03715673

申请日：2003-03-31

申请人： FUJITSU LTD

发明人： TSUTSUI MASAFUMI

IPC分类号： H01Q21/08 ,  H04B1/707 ,  H04B1/7113 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/02 ,  H04B7/08 ,  H04B7/10 ,  H04W16/28 ,  H04W64/00 ,  H04W88/08

CPC分类号： H01Q21/08 ,  H04B1/7117 ,  H04B7/086

公开(公告)号：EP1339172A4

公开(公告)日：2007-05-16

申请号：EP01981055

申请日：2001-11-09

申请人： NEC CORP

发明人： HAYATA TOSHIHIRO

IPC分类号： H04B1/7117 ,  H04B1/707 ,  H04B1/709 ,  H04B7/02 ,  H04J13/04

CPC分类号： H04B1/7117 ,  H04B1/7113

摘要： An object of the present invention is to provide a rake receiver and a receiving method for efficiently assigning paths to fingers in a CDMA mobile communication system. In the present invention, a correlation-value calculation section 2 calculates correlation values between spreading codes and reception signals input from an input terminal 1, at all timings at which rake reception is possible, and outputs the calculated correlation values to a delayed-profile creation section 3 and a difference-history creation section 6. The delayed-profile creation section 3 determines average correlation values and issues the values as a delayed profile to a path selection section 4. For each reception timing, the difference-history creation section 6 compares the latest correlation value issued from the correlation-value calculation section 2 with a previous correlation value held by the difference-history creation section 6, to determine a difference history, and issues the difference history to the path selection section 4. The path selection section 4 rearranges the delayed profile in decreasing order the average correlation values. When the delayed profile and the difference history satisfy all predetermined conditions, the path selection section 4 assigns the corresponding reception timing to a finger and issues the reception timing to the finger section 5.

公开(公告)号：EP1424797A4

公开(公告)日：2006-08-02

申请号：EP01961361

申请日：2001-09-04

申请人： MITSUBISHI ELECTRIC CORP

发明人： KAKEHI YUJI

IPC分类号： H04B1/707 ,  H04B1/7113 ,  H04B1/7117 ,  H04J3/04 ,  H04J3/06 ,  H04W48/16 ,  H04W76/02 ,  H04W88/02 ,  H04J13/04

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04J3/047 ,  H04J3/0632

摘要： A matched filter (131) extracts incoming time of signals from a plurality of base stations by time division, based on a baseband signal output from a RF transmitter/receiver (102). A delay profile generation circuit (132) generates respective delay profiles based on the incoming time, and the generated delay profiles are stored into memories (141, ..., 14N) designated by a demultiplexer (133). An effective path detection circuit (135) detects an effective path based on the stored delay profiles.

公开(公告)号：EP1381168A4

公开(公告)日：2006-01-11

申请号：EP02720465

申请日：2002-04-17

申请人： NEC CORP

发明人： HIRADE SEI

IPC分类号： H04B1/707 ,  H04B1/7117 ,  H04L7/00

CPC分类号： H04B1/7115 ,  H04B1/7117

摘要： A path protection method for a CDMA reception apparatus is disclosed, which obtains correlation value levels while shifting the despreading timing of reception data little by little, searches for optimal reception timings, outputs a plurality of finger path timings, with respect to the reception data, as reception timings at which reception should be performed, and despreads the respective paths, thereby performing RAKE combining. If all protection paths are in the forward protection state upon execution of path backward protection and forward protection, a protection path with the lowest level is deleted, and a search path having the highest level among paths which are equal to or more than a threshold and detected by a searcher is registered in the deleted portion, thereby allowing assignment of a newly detected path even in the absence of a protection path space.

摘要翻译： 用于执行RAKE合成的CDMA接收设备的路径保护方法。 该方法包括以下步骤：一点一点地移动接收数据的解扩定时以获得相关值水平，搜索最佳接收定时，输出多个指路径定时作为接收定时，以接收数据到接收数据，以及 解散路径。 在该方法中，执行路径后部保护和前部保护，并且如果保护路径全部处于前部保护状态，则删除最低级别的保护路径，并且在删除路径的位置处，搜索路径 在搜索者找到的阈值以上的路径中具有最高级别。 因此，即使保护路径没有空闲空间，也可以分配检测到的新路径。

公开(公告)号：EP1459456A4

公开(公告)日：2005-03-09

申请号：EP02806165

申请日：2002-12-17

申请人： INTERDIGITAL TECH CORP

发明人： HACKETT WILLIAM C

IPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04B7/216 ,  H04Q7/20 ,  H04B1/69 ,  H04B1/707

CPC分类号： H04B1/7117 ,  H04B2201/70707

摘要： A rake architecture for a frequency division duplex (FDD) and use also in TDD and TD-SCDMA type communications system, designed to significantly reduce the memory capacity required and thereby also reduce an area on the die of an application specific integrated circuit (ASIC) into which the memory is integrated. A single circular buffer (60) , preferably of the shared memory type is shared by all of the rake fingers (RAKE FINGERS 1, 2, 3, 4, 5 and 6) of a rake receiver to significantly reduce the hardware and software required to time align multipath signals (DATA IN) received by a UE from a base station. The unique time alignment technique also reduces the number of code generators (62, 64 and 66) required to track a plurality (typically three) of base stations.

公开(公告)号：EP1353449A4

公开(公告)日：2004-04-28

申请号：EP02715780

申请日：2002-01-17

申请人： YOZAN INC

发明人： SUZUKI KUNIHIKO ,  CHEN XIAO YUAN ,  ZHOU CHANG MING

IPC分类号： H04B1/707 ,  H04B1/7113 ,  H04B1/7117 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26 ,  H04W16/28 ,  H04W88/02

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04B7/0613 ,  H04B2201/70701

摘要： By calculating the complex product between each of the complex conjugate pattern for the pilot patterns assigned individually to a plurality of transmitting antennas of a base station and de-spread signals (ISI, ISQ), which have been obtained from a received signal by de-spreading portion (22), a separating section (23) separates the pilot block of the de-spread signals, for each of the plurality of transmitting antennas, from the received signal. Subsequently, after a delay profile for the transmitted signal from each of the plurality of transmitting antennas is generated by using the separated signals (PLI1, PLQ1), (PLI2, PLQ2), a delay profile combining portion (27) combines into a delay-profile for multi-path selection, and multi-path selection is performed based on the delay profile for multi-path selection. Therefore, highly accurate path search is possible in a DS-CDMA system that employs a transmitter diversity scheme.

公开(公告)号：EP1121068A4

公开(公告)日：2004-04-07

申请号：EP99969009

申请日：1999-09-10

申请人： MOTOROLA INC

发明人： WANG MICHAEL MAO ,  BROWN TYLER

IPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04L27/30 ,  H04B1/707

CPC分类号： H04B1/7115 ,  H04B1/7117

摘要： A base station receiver assembly (400) for performing a signal search, which operates in a coherent code division multiple access (CDMA) wireless communication system conveying a mobile communication signal is disclosed. The assembly (400) includes a multipath signal searcher (200), a receiver (300), and an energy adjustment generator (490). The energy adjustment generator operates to combine an energy metric (241) from the multipath signal searcher (200) with a symbol match count (447) to yield a signal (448) for weighting inputs to a finger manager (260). The symbol match count (447) is based on a count, resulting from a comparison of a number of times an output from the multipath signal searcher (200) matched an output from the receiver (300). The symbol match count (447) is representative of a likelihood that a time offset selected by the finger manager (260) corresponds to a time offset of the mobile communication signal (107).