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公开(公告)号：KR1020100065095A
公开(公告)日：2010-06-15
申请号：KR1020090111133
申请日：2009-11-17
IPC: H04B7/04
CPC classification number: H04B1/02 , H04B7/0413 , H04B7/08
Abstract: PURPOSE: A method for detecting signal in MIMO communication system and a device thereof are provided to embody the same performance with method of optimum signal detecting. CONSTITUTION: A detection order determining unit(211) determines symbol location to detect from receiving signals. A symbol candidate selector(212) selects symbol candidate vectors on constellation according to determined symbol location by each level. A symbol detection unit(213) calculates Euclidean distance respectively with the receiving signal about entire constellation symbol candidate vectors combining all optimum number of symbol candidate vectors according to each level.
Abstract translation: 目的：提供一种用于MIMO通信系统中信号检测的方法及其装置，以最佳信号检测方式体现相同的性能。 构成：检测顺序确定单元（211）确定从接收信号检测的符号位置。 符号候选选择器（212）根据每个级别确定的符号位置选择星座上的符号候选向量。 符号检测单元（213）分别根据接收信号，根据每个等级，将组合所有最佳数量的码元候选向量的整个星座符号候选向量计算欧氏距离。
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公开(公告)号：KR100943519B1
公开(公告)日：2010-02-22
申请号：KR1020070119826
申请日：2007-11-22
CPC classification number: H04L1/0054
Abstract: 본 발명은 로그우도비 산출 방법 및 송신 신호 검출 방법에 관한 것이다.
본 발명은 수신된 신호에 기초해 송신 심볼 후보 벡터를 검출하면, 임계치와 각 송신 심볼 후보 벡터에 대한 ML 메트릭을 산출하고, 임계치보다 큰 ML 메트릭은 임계치로 갱신한다. 그리고, 갱신된 ML 메트릭과 임계치를 이용하여 각 송신 신호 비트에 대한 로그우도비를 산출하고, 이를 이용하여 송신 신호를 검출한다.
송신 심볼 후보 벡터, 로그우도비, 유클리디언 거리, ML 메트릭-
公开(公告)号：KR100926563B1
公开(公告)日：2009-11-12
申请号：KR1020070084846
申请日：2007-08-23
CPC classification number: H04L25/03318 , H04L25/0204 , H04L25/0246 , H04L25/067
Abstract: 본 발명은 로그우도비 산출 방법, 송신 신호 검출 방법 및 수신기에 관한 것이다.
본 발명은 수신된 신호에 기초해 채널을 추정하고, 복수의 레이어를 재정렬한다. 그리고, 레이어의 재정렬 시 가장 신뢰도가 낮은 레이어의 심볼은 모든 성상점의 경우를 고려하고, 가장 낮은 신뢰도를 갖는 레이어의 각 성상점에 대응하여 나머지 레이어들의 심볼들에 대한 연속적인 간섭 제거를 수행하여 송신 심볼 후보 벡터를 설정한다, 또한, 송신 심볼 후보 벡터를 이용하여 채널 복호를 위한 복수의 레이어의 각 비트에 대한 로그우도비를 산출한다.
송신 심볼 후보 벡터, 로그우도비, 성상점, 레이어, 유클리디언 거리-
公开(公告)号：KR1020090061423A
公开(公告)日：2009-06-16
申请号：KR1020070128430
申请日：2007-12-11
CPC classification number: H04B7/0413 , H04B7/0854
Abstract: A method for detecting a transmission symbol in a multi-antenna system is provided to reduce the complexity and improve the performance. By using a received signal, a receiving stage performs the channel estimation(S101), and then confirms channel states of each transmission antenna(S102). A channel matrix and a transmission signal vector are re-arranged(S106). The QR decomposition for the re-arranged channel matrix is performed(S107). A transmission symbol is detected(S108,S109).
Abstract translation: 提供了一种用于检测多天线系统中的发送符号的方法，以降低复杂度并提高性能。 通过使用接收信号，接收级进行信道估计（S101），然后确认各发送天线的信道状态（S102）。 重新布置信道矩阵和传输信号矢量（S106）。 执行重新布置的信道矩阵的QR分解（S107）。 检测到发送符号（S108，S109）。
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公开(公告)号：KR1020080050239A
公开(公告)日：2008-06-05
申请号：KR1020070067511
申请日：2007-07-05
IPC: H04B7/06
CPC classification number: H04B7/0669 , H04B7/0413 , H04L25/0204 , H04L2025/03426
Abstract: A method for calculating a bit likelihood ratio and a method for detecting a transmission symbol in a MIMO(Multi-Input Multi-Output) system are provided to solve a problem that ML(Maximum Likelihood) bit metric detection has very high complexity although it exhibits an optimum transmission signal detection performance. When a reception signal is transferred via an antenna of a receiver, a channel estimating and layer aligning unit of the receiver estimates a channel by using the received signal and calculates an inverse matrix of the estimated channel(S100). The channel estimating and layer aligning unit obtains the norm of each row of the matrix and re-aligns columns of the channel according to the norm of the rows(S200). A symbol detecting unit performs QR decomposition on the re-aligned channel(S300), and detects a candidate transmission signal group(S400). The symbol detecting unit checks whether candidates 1 and -1 coexist in the C number of candidate transmission signal group with respect to each bit of the transmission signals(S500). A minimum Euclidean distance calculator calculates a minimum Euclidean distance with respect to each bit having only the candidate 1 and an average value calculator calculates an average value of the minimum Euclidean distances of the same blocks(S600). A weight value calculator calculates a weight value proportional to an SNR(Signal-to-Noise Ratio) of a corresponding layer of the candidate transmission signal group(S700), and calculates a bit likelihood ratio of bits having only the candidate 1 at the corresponding layer by multiplying the average value of the minimum Euclidean distances and the weight value proportional to the SNR(S800).
Abstract translation: 提供了一种用于计算比特似然比的方法和用于检测MIMO（多输入多输出）系统中的发送符号的方法，以解决ML（最大似然）比特度量检测具有非常高的复杂度的问题，尽管它展现 最佳传输信号检测性能。 当通过接收机的天线传送接收信号时，接收机的信道估计和层对齐单元通过使用接收信号来估计信道，并计算估计信道的逆矩阵（S100）。 信道估计和层对齐单元获得矩阵的每行的范数，并根据行的范数重新对齐信道的列（S200）。 符号检测单元对重新对准的信道执行QR分解（S300），并检测候选发送信号组（S400）。 符号检测单元检查候选1和-1是否相对于发送信号的每个比特共存在候选发送信号组的C个号码中（S500）。 最小欧几里德距离计算器计算相对于仅具有候选者1的每个位的最小欧几里德距离，并且平均值计算器计算相同块的最小欧几里得距离的平均值（S600）。 权重值计算器计算与候选传输信号组的相应层的SNR（信噪比）成比例的权重值（S700），并且计算在对应的候选信号组中仅具有候选1的比特的比特似然比 通过乘以最小欧几里德距离的平均值和与SNR成比例的权重值（S800）。
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Patent Agency Ranking
公开(公告)号：KR100808663B1
公开(公告)日：2008-03-03
申请号：KR1020060122858
申请日：2006-12-06
CPC classification number: H04B7/0413 , H04L1/0656 , H04L25/0204 , H04L25/0246 , H04B7/0857 , H04L1/0054
Abstract: A signal detecting method in an MIMO system and a receiving apparatus are provided to approach performance approximate to an ML(Maximum Likelihood) method without performing exhaustive full search of the ML method, thereby significantly reducing the amount of necessary calculation and easily implementing hardware. In a transmission apparatus(100), a signal processor(110) processes transmission data and transmits the processed transmission data to a symbol matching unit(120). The symbol matching unit converts the processed transmission data to symbols according to modulation method, and the high speed symbols are divided into 4 low speed data layers through a demultiplexing unit(130) according to the number of a transmission antenna(140). The divided data layers are transmitted through the transmission antenna. A receiving apparatus of an MIMO(Multiple Input Multiple Output) comprises the followings. A layer arranging unit(210) rearranges channel-estimated layers for a received signal based on reliability. A symbol detecting unit(220) detects a transmission symbol vector according to the layers rearranged by the layer arranging unit. A standard for determining the reliability of the layers is an SNR(Signal-to-Noise Ratio).
Abstract translation: 提供了一种MIMO系统和接收装置中的信号检测方法，用于接近ML（最大似然）方法的性能，而不进行ML方法的全面搜索，从而显着减少必要的计算量并容易地实现硬件。 在发送装置（100）中，信号处理部（110）处理发送数据，并将经处理的发送数据发送到符号匹配部（120）。 符号匹配单元根据调制方法将经处理的传输数据转换为符号，并且根据发射天线（140）的数量，通过解复用单元（130）将高速码元划分为4个低速数据层。 分割的数据层通过发送天线发送。 MIMO（多输入多输出）的接收装置包括以下。 层布置单元（210）基于可靠性重新布置用于接收信号的信道估计层。 符号检测单元（220）根据由层布置单元重排的层检测传输符号向量。 用于确定层的可靠性的标准是SNR（信噪比）。
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公开(公告)号：KR101706210B1
公开(公告)日：2017-02-15
申请号：KR1020140015973
申请日：2014-02-12
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W88/085 , H04B7/022
Abstract: 본발명의일 실시예에따른기지국은복수의원격라디오헤드(RRH)들과협력통신하는기지국에있어서, 상기복수의원격라디오헤드들로부터소스신호들을수신하는통신부, 상기소스신호들각각의신호세기및 지연시간을측정하는측정부, 상기신호세기및 지연시간을기초로상기복수의원격라디오헤드들가운데협력통신을수행할원격라디오헤드들을선택하는선택부, 및상기선택된원격라디오헤드들로부터수신된소스신호를복조하는복조부를포함한다.
Abstract translation: 公开了一种与多个远程无线电头（RRH）进行协调通信的基站，包括：通信单元，从多个远程无线电头接收源信号; 测量单元，测量各个源信号的信号强度和延迟时间; 选择单元，基于所述信号强度和所述延迟时间来选择将在所述多个远程无线电头中执行协调通信的远程无线电头; 以及解调单元，解调从所选择的远程无线电头接收的源信号。
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公开(公告)号：KR101640566B1
公开(公告)日：2016-07-18
申请号：KR1020120143800
申请日：2012-12-11
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L5/0007
Abstract: 본발명은무선통신시스템의레인징신호생성장치및 무선단말의레인징신호생성방법에관한것으로, 초기레인징신호를생성하기위하여사용하는부반송파의주파수간격과주기적레인징을사용하는부반송파의주파수간격이다른무선통신시스템에서상향링크로전송되는레인징신호의모드에상관없이하나의 IFFT 엔진을사용하여레인징신호를생성함으로써무선단말의하드웨어및 디자인복잡성줄일수 있고, 무선단말의하드웨어단순화에의한전력소모를줄일수 있도록한 것이다.
Abstract translation: 提供了一种生成无线终端的测距信号的方法和用于生成无线通信系统的测距信号的装置，该无线通信系统可以独立于在上行链路中发送的测距信号的模式，使用一个IFFT引擎生成测距信号 无线通信系统，其中用于生成初始测距信号的子载波的频率间隔和使用周期性测距的子载波的频率间隔不同。 以这种方式，可以降低硬件的复杂性和无线终端的设计，并通过硬件简化降低无线终端的功耗。
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