公开(公告)号：WO2010070419A3

公开(公告)日：2010-09-30

申请号：PCT/IB2009007768

申请日：2009-12-15

Applicant: ERICSSON TELEFON AB L M ,  WANG YI-PIN ERIC ,  GUNNARSSON FREDRIK ,  BOTTOMLEY GREGORY E ,  WIBERG NICLAS

Inventor： WANG YI-PIN ERIC ,  GUNNARSSON FREDRIK ,  BOTTOMLEY GREGORY E ,  WIBERG NICLAS

IPC: H04B7/08

CPC classification number: H04B1/7103 ,  H04B7/0891

Abstract: A node (e.g., base station, signal processing unit) is described herein that includes a symbol detector and a method which are capable of suppressing interference caused by one user device (which may be in softer handoff mode) to reduce performance degradation to other intra-cell user devices and/or other inter-cell user devices (which may not be in softer handoff mode).

Abstract translation: 这里描述了包括符号检测器和方法的节点（例如，基站，信号处理单元），该符号检测器和方法能够抑制由一个用户设备（其可以处于更软切换模式）引起的干扰，以降低到其他帧内 小区用户设备和/或其他小区间用户设备（其可能不处于更软切换模式）。

公开(公告)号：WO2007046758A3

公开(公告)日：2007-06-14

申请号：PCT/SE2006050379

申请日：2006-10-05

Applicant: ERICSSON TELEFON AB L M

Inventor： GRANT STEPHEN ,  CHENG JUNG-FU THOMAS ,  WANG YI-PIN ERIC ,  MOLNAR KARL ,  KRASNY LEONID

IPC: H04B7/06 ,  H04B1/707 ,  H04B7/08

CPC classification number: H04B7/0645 ,  H04B1/71072 ,  H04B1/712 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0632 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/06

Abstract: In a selective MIMO system, the mobile station provides channel quality feedback for one or more possible transmission mode. The mobile station provides channel quality feedbac for a first mode regardless of channel conditions and determines whether to provide feedback for one or more additional modes based on current channel conditions.

Abstract translation: 在选择性MIMO系统中，移动台为一个或多个可能的传输模式提供信道质量反馈。 移动台无论信道条件如何都为第一模式提供信道质量反馈，并基于当前信道条件确定是否为一个或多个附加模式提供反馈。

公开(公告)号：WO2006132593A3

公开(公告)日：2007-01-18

申请号：PCT/SE2006050187

申请日：2006-06-09

Applicant: ERICSSON TELEFON AB L M

Inventor： GRANT STEPHEN ,  KRASNY LEONID ,  WANG YI-PIN ERIC ,  MOLNAR KARL J ,  CHENG JUNG-FU

IPC: H04B1/707 ,  H04B7/06

CPC classification number: H04B1/712 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/7107 ,  H04B1/71072 ,  H04B7/04 ,  H04B7/0684 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/18 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/03012 ,  H04L25/03318 ,  H04L25/03331 ,  H04W52/16 ,  H04W52/325 ,  H04W52/346 ,  H04W52/42

Abstract: A wireless communication receiver improves signal impairment correlation estimation in MIMO/MISO systems by considering different transmit power allocations and different transmit antenna power distributions in its impairment correlation calculations. The receiver may be implemented in according to a variety of architectures, including, but not limited to, Successive Interference Cancellation (SIC) Generalized RAKE (G-RAKE), Joint Detection (JD) G-RAKE, and Minimum Mean Squared Error (MMSE) G-RAKE. Regardless of the particular receiver architecture adopted, the improved impairment correlations may be used to calculate improved (RAKE) signal combining weights and/or improve channel quality estimates for reporting by receivers operating in Wideband CDMA (W-CDMA) systems transmitting HSDPA channels via MIMO or MISO transmitters. A transmitter may be configured to facilitate impairment correlation determinations by wireless communication receivers operating in MIMO/MISO environments, by signaling one or more values, e.g., data-to-pilot signal transmit power ratios and/or transmit antenna power distributions for the data and pilot signals.

Abstract translation: 无线通信接收机通过在损伤相关计算中考虑不同的发射功率分配和不同的发射天线功率分布来改善MIMO / MISO系统中的信号损害相关估计。 接收机可以根据各种架构来实现，包括但不限于连续干扰消除（SIC）广义RAKE（G-RAKE），联合检测（JD）G-RAKE和最小均方误差（MMSE） ）G-RAKE。 不考虑所采用的特定接收机架构，改进的损害相关可以用于计算改进的（RAKE）信号组合权重和/或改善用于在通过MIMO发送HSDPA信道的宽带CDMA（W-CDMA）系统中操作的接收机报告的信道质量估计 或MISO发射机。 发射机可以被配置为通过信令一个或多个值（例如数据到导频信号发射功率比和/或数据的发射天线功率分布）来促进在MIMO / MISO环境中操作的无线通信接收机的损害相关确定，以及 导频信号。

公开(公告)号：WO2004093333A3

公开(公告)日：2004-12-02

申请号：PCT/US2004010561

申请日：2004-04-06

Applicant: ERICSSON TELEFON AB L M ,  BOTTOMLEY GREGORY ,  WANG YI-PIN ERIC ,  CHENG JUNG-FU ,  GRANT STEPHEN

Inventor： BOTTOMLEY GREGORY ,  WANG YI-PIN ERIC ,  CHENG JUNG-FU ,  GRANT STEPHEN

IPC: H04B1/707 ,  H04J13/00 ,  H04L25/03

CPC classification number: H04B1/7105 ,  H04B1/709 ,  H04B1/712 ,  H04L25/03171 ,  H04L25/03331

Abstract: A CDMA communication system uses a RAKE receiver, a code correlator and a multi-code joint detector to jointly detect symbols in two or more received signals contained within a composite signal. The RAKE receiver separates the composite signal into two or more RAKE output signals by despreading the composite signal using selected spreading codes. The multi-code joint detector jointly detects the symbols in the received signals using the RAKE receiver output signals, cross-correlations between the spreading codes generated by the code correlator, and RAKE combining weights based on a noise covariance matrix. The multi-code joint detector also includes a trellis that represents possible states and state transitions and a branch metric calculator for calculating branch metrics associated with the state transitions based on the RAKE receiver output signals and the cross-correlations between the spreading codes.

Abstract translation: CDMA通信系统使用RAKE接收机，码相关器和多码联合检测器来联合检测包含在复合信号内的两个或更多接收信号中的码元。 瑞克接收机通过使用选定的扩频码对复合信号进行解扩来将复合信号分离成两个或更多瑞克输出信号。 多码联合检测器使用RAKE接收机输出信号，由码相关器产生的扩展码之间的互相关以及基于噪声协方差矩阵的RAKE组合权重联合检测接收信号中的码元。 多码联合检测器还包括表示可能的状态和状态转换的网格，以及分支度量计算器，用于基于RAKE接收器输出信号和扩展码之间的互相关来计算与状态转换相关联的分支度量。

公开(公告)号：WO2013162440A3

公开(公告)日：2014-01-16

申请号：PCT/SE2013050221

申请日：2013-03-12

Applicant: ERICSSON TELEFON AB L M

Inventor： SAMUEL BEBAWY MICHAEL ,  HUSS FREDRIK ,  WANG YI-PIN ERIC

IPC: H03M13/00 ,  H03M13/41 ,  H03M13/45 ,  H04B1/707 ,  H04L27/18

CPC classification number: H04L25/03012 ,  H04L1/005 ,  H04L25/03171 ,  H04L25/0328 ,  H04L27/38

Abstract: In one aspect, the present invention improves Turbo equalization and/or soft interference cancellation processing in communication receivers by providing an efficient and accurate technique to compute the second moment of a received symbol, e.g., an interfering symbol, as a function of the expected bit values of only those bits in the symbol that are magnitude- controlling bits according to a defined modulation constellation. Advantageously, the expected bit values in at least one embodiment are computed using a LUT that maps bit LLRs to corresponding hyperbolic tangent function values. Further, the expected symbol value is computed as a linear function of terms comprising the expected bit values and the soft symbol variance is efficiently computed from the second moment and the expected symbol value squared. This simplified processing reduces receiver complexity, particularly in the context of modulation constellations having non-constant magnitudes, and thus saves power and/or improves design economics.

Abstract translation: 在一个方面，本发明通过提供有效和准确的技术来计算接收符号的第二时刻（例如干扰符号）来改善通信接收机中的Turbo均衡和/或软干扰消除处理，作为预期位的函数 根据定义的调制星座，只有符号中那些位是幅度控制位的值。 有利地，使用将位LLR映射到对应的双曲正切函数值的LUT来计算至少一个实施例中的预期位值。 此外，预期符号值被计算为包括预期位值的项的线性函数，并且从第二时刻有效地计算软符号方差，并且预期符号值平方。 这种简化的处理降低了接收机复杂性，特别是在具有非恒定幅度的调制星座的上下文中，从而节省功率和/或改善了设计经济性。

公开(公告)号：WO2013050985A2

公开(公告)日：2013-04-11

申请号：PCT/IB2012055403

申请日：2012-10-06

Applicant: ERICSSON TELEFON AB L M

Inventor： CHENG JUNG-FU ,  WANG YI-PIN ERIC ,  FRENNE MATTIAS ,  FALAHATI SOROUR

IPC: H04B7/08

CPC classification number: H04B7/0456 ,  H04B7/0854

Abstract: Devices and methods for suppressing interference in inter-cell and intra* ceil network communication. First and second received signals are received at a communication device, the first and second received signals comprising, respectively, reference signais and data signais. Estimated channel vectors are calculated from the first received signals, and estimated data covanance matrices are calculated from the second received signals. A plurality of combining weight vectors are determined based on the estimated channel vectors and the estimated data covariance matrices. The second received signals are then combined with the plurality of combining weight vectors to obtain a plurality of combined signals, wherein interference in the second received signals has been suppressed in the plurality of combined signals.

Abstract translation: 用于抑制小区间和内部网络通信中的干扰的装置和方法。 第一和第二接收信号在通信设备处被接收，第一和第二接收信号分别包括参考信号和数据信号。 从第一接收信号计算估计的信道向量，并且从第二接收信号计算估计的数据总和矩阵。 基于估计的信道向量和估计的数据协方差矩阵来确定多个组合权重向量。 然后将第二接收信号与多个组合权重向量组合以获得多个组合信号，其中在多个组合信号中已经抑制了第二接收信号中的干扰。

公开(公告)号：WO2011036652A3

公开(公告)日：2011-10-13

申请号：PCT/IB2010054354

申请日：2010-09-28

Applicant: ERICSSON TELEFON AB L M ,  BOTTOMLEY GREGORY E ,  WANG YI-PIN ERIC

Inventor： BOTTOMLEY GREGORY E ,  WANG YI-PIN ERIC

IPC: H04L25/03

CPC classification number: H04L25/03178 ,  H04L25/03203 ,  H04L25/03331 ,  H04L2025/03426

Abstract: Teachings presented herein offer reduced computational complexity for detecting a plurality of symbol blocks, even for symbol blocks that comprise the combination of a relatively large number of symbols The teachings perform two or more stages of detection assistance to successively reduce the number of candidate combinations of symbols to be considered for a symbol block when detecting the plurality of symbol blocks. In particular, the teachings identify a reduced set of candidate symbol combinations for at least one symbol block m the plurality ?f symbol blocks, and then jointly detect each of one or more distinct groups of symbols in the symbol block to determine from that reduced set a final reduced set of candidate symbol combinations. Detection of the plurality of symbol blocks limits the candidate combinations of symbols considered for a symbol block to the final reduced set of candidate symbol combinations identified for that symbol block.

Abstract translation: 本文呈现的教导即使对于包括相对大量的符号的组合的符号块也提供降低的用于检测多个符号块的计算复杂度。教导执行两个或更多个检测辅助阶段以连续地减少符号的候选组合 在检测到多个符号块时被考虑用于符号块。 特别地，该教导识别用于多个Δf符号块中的至少一个符号块的缩减的候选符号组合集合，然后联合检测符号块中的一个或多个不同的符号组中的每一个，以从该缩减集合 最终缩减的一组候选符号组合。 多个符号块的检测将针对符号块考虑的符号的候选组合限制为针对该符号块标识的候选符号组合的最终缩减集合。

公开(公告)号：WO2008069736A3

公开(公告)日：2008-09-12

申请号：PCT/SE2007050791

申请日：2007-10-29

Applicant: ERICSSON TELEFON AB L M

Inventor： BOTTOMLEY GREGORY E ,  WANG YI-PIN ERIC

IPC: H04B1/10 ,  H04B1/707 ,  H04J13/00

CPC classification number: H04B1/712 ,  H04B1/7107 ,  H04B1/7115 ,  H04B2201/709727 ,  H04J13/0077

Abstract: Multi-transmitter interference caused by one or more interfering own-cell and/or other- cell transmitters is reduced in a RAKE-based receiver. The RAKE-based receiver comprises a plurality of RAKE fingers, a processor and a combiner. The plurality of RAKE fingers are configured to despread received symbols, wherein a delay for a first one of the plurality of RAKE fingers corresponds to a symbol of interest transmitted by a first transmitter and a delay for a second one of the plurality of RAKE fingers corresponds to an interfering symbol transmitted by a second transmitter. The processor is configured to determine a cross-correlation between the symbol of interest and the interfering symbol. The combiner is configured to combine the symbol of interest with the interfering symbol using the cross-correlation to reduce interference attributable to the interfering symbol from the symbol of interest.

Abstract translation: 在基于RAKE的接收机中，由一个或多个干扰的自身小区和/或其他小区发射机造成的多发射机干扰减少。 基于RAKE的接收机包括多个RAKE耙指，处理器和组合器。 所述多个RAKE耙指被配置为对接收到的符号进行解扩，其中，所述多个RAKE耙指中的第一个的延迟对应于由第一发射机发送的感兴趣的符号，并且用于所述多个RAKE耙指中的第二个的延迟对应于 涉及由第二发射机发射的干扰符号。 处理器被配置为确定感兴趣符号和干扰符号之间的互相关。 组合器被配置为使用互相关将感兴趣符号与干扰符号组合，以从感兴趣符号减少归因于干扰符号的干扰。

公开(公告)号：WO2008069735A3

公开(公告)日：2008-07-31

申请号：PCT/SE2007050765

申请日：2007-10-23

Applicant: ERICSSON TELEFON AB L M

Inventor： BOTTOMLEY GREGORY E ,  WANG YI-PIN ERIC ,  GRANT STEPHEN J

IPC: H04B1/707 ,  H04L25/08

CPC classification number: H04B1/712

Abstract: Processing in a baseband processor is improved by estimating channelization code powers when processing received signals and reducing at least one of interference and noise power from the code power estimates. According to one embodiment of a wireless communication device such as a mobile phone or Local Area Network (LAN) adapter, the device comprises circuitry configured to receive a composite signal having contributions from a signal of interest and one or more interfering signals and a baseband processor. The baseband processor is configured to estimate channelization code powers for a channelization code associated with the signal of interest and one or more channelization codes associated with the one or more interfering signals. The baseband processor is also configured to reduce at least one of interference and noise power from the channelization code power estimates.

Abstract translation: 通过在处理接收到的信号时估计信道化码功率并且从代码功率估计中减少干扰和噪声功率中的至少一个来改善基带处理器中的处理。 根据诸如移动电话或局域网（LAN）适配器的无线通信设备的一个实施例，该设备包括被配置为接收具有来自感兴趣的信号和一个或多个干扰信号的贡献的复合信号的电路和基带处理器 。 基带处理器被配置为估计与感兴趣的信号相关联的信道化码和与一个或多个干扰信号相关联的一个或多个信道化码的信道化码功率。 基带处理器还被配置为从信道化码功率估计中减少干扰和噪声功率中的至少一个。

公开(公告)号：WO2014074055A3

公开(公告)日：2014-07-10

申请号：PCT/SE2013051289

申请日：2013-11-05

Applicant: ERICSSON TELEFON AB L M

Inventor： NAMMI SAIRAMESH ,  WANG YI-PIN ERIC ,  LARSSON ERIK

IPC: H04W16/26 ,  H04W16/32 ,  H04W28/02 ,  H04W36/04 ,  H04W36/30 ,  H04W72/04 ,  H04W88/08

CPC classification number: H04W72/1231 ,  H04W40/08 ,  H04W48/12 ,  H04W48/16 ,  H04W72/1273 ,  H04W72/1289 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/324

Abstract: A method and system for probing in a wireless communication network are disclosed. According to one aspect, a method includes directing at least one low power node to transmit a probing signal, where the probing signal includes least one code. The method also includes receiving from a wireless terminal an indication of downlink channel quality. The channel quality is based on a power of the probing signal received by the wireless terminal. The method further includes selectively directing at least one of the at least one low power node to communicate with the wireless terminal. The selecting is based on the indication of downlink channel quality. ADDITIONAL DETAILS: Het-nets within UMTS (W-CDMA) environment; a combined cell concept (a.k.a. soft cell or shared cell) where the macro-cell (MBS) and the micro / pico /femto cells (LPN) within it share one single cell-id (a.k.a. CoMP Scenario 4) with Dynamic Point Selection (DPS), where a UE is served by the closest LPN only; DIFFERENCE: the MBS instructs the LPN's to broadcast a probing signal constituted by a pilot signal plus a scrambling plus a channelization codes; in return, the UE return a report to the MBS, which is used by the MBS to decide which LPN serves which UE.

Abstract translation: 公开了一种在无线通信网络中探测的方法和系统。 根据一个方面，一种方法包括引导至少一个低功率节点来发射探测信号，其中所述探测信号包括至少一个码。 该方法还包括从无线终端接收下行链路信道质量的指示。 信道质量基于由无线终端接收的探测信号的功率。 该方法还包括选择性地引导至少一个低功率节点中的至少一个与无线终端进行通信。 该选择基于下行链路信道质量的指示。 附加细节：UMTS（W-CDMA）环境中的Het网络; 其中宏小区（MBS）和其中的微/微微/毫微微小区（LPN）之间的组合小区概念（也称为软小区或共享小区）共享具有动态点选择的单个小区id（也称为CoMP场景4） DPS），其中UE仅由最接近的LPN服务; 差异：MBS指示LPN广播由导频信号加上加扰加上信道化码构成的探测信号; 作为回报，UE返回到MBS的报告，由MBS使用该报告来决定哪个LPN服务于哪个UE。