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公开(公告)号：KR1020080021323A
公开(公告)日：2008-03-07
申请号：KR1020060084609
申请日：2006-09-04
Applicant: 삼성전자주식회사
Inventor： 코야준
IPC: H04B7/04
CPC classification number: H04B7/0857 , H04B7/0413
Abstract: A receiving device for detecting a transmission signal of a multi-antenna communication system and a method thereof are provided to use LR(Lattice Reduction) algorithm having complex-valued variables where real number and imaginary number parts are combined, thus the complex-valued variables do not have to be separated into real number and imaginary number units, consequently calculation complexity is reduced. An MIMO(Multi Input Multi Output) detector(500) dissolves SQR(Sorted QR) by multiplying a replacement matrix by an expanded channel matrix(501), executes LR algorithm for moving the QR to an LR signal space(502), performs LR-based SIC(Successive Interference Cancellation) for mapping candidate vectors of the LR signal space with vectors of an original signal space(503), and performs soft output by operating an LLR(Log Likelihood Ratio)(504). A demodulator(510) decodes detected symbol data by using the soft output value.
Abstract translation: 提供了一种用于检测多天线通信系统的发送信号的接收装置及其方法，以使用具有组合实数和虚数部分的复值变量的LR（格值减小）算法，因此复值变量 不必分成实数和虚数单位，因此计算复杂度降低。 MIMO（多输入多输出）检测器（500）通过将替换矩阵乘以扩展信道矩阵（501）来解码SQR（Sorted QR），执行用于将QR移动到LR信号空间的LR算法（502），执行LR 基于SIC（连续干扰消除），用于映射原始信号空间（503）的向量的LR信号空间的候选向量，并通过操作LLR（对数似然比）（504）来执行软输出。 解调器（510）通过使用软输出值解码检测到的符号数据。
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公开(公告)号：KR101400855B1
公开(公告)日：2014-06-17
申请号：KR1020070123347
申请日：2007-11-30
Applicant: 삼성전자주식회사
Abstract: 다중 입출력(MIMO : Multiple Input Multiple Output) 무선통신 시스템에서 스트림별 채널 품질 정보(CQI : Channel Quality Information) 생성에 관한 것으로, 다수의 안테나들을 통해 송신단으로부터의 신호를 수신하는 수신기와, 수신신호를 이용하여 상기 송신단과의 안테나별 채널을 추정하여 채널행렬을 구성하는 추정기와, 격자 감소(lattice reduction) 기법을 이용하여 스트림별 유효 잡음(effective noise)을 도출함으로써, 스트림별 채널 품질 정보을 생성하는 생성기를 포함하여, 격자 감소 기법을 이용하여 산출되는 유효 잡음을 이용하여 스트림별 채널 품질 정보을 생성함으로써, 폐루프(CL : Closed Loop) 다중 입출력 시스템을 위한 피드백 정보를 생성할 수 있다.
다중 입출력(MIMO : Multiple Input Multiple Output), 스트림별 채널 품질 정보(CQI : Channel Quality Information), 신호대 간섭 및 잡음비(SINR : Signal to Interference and Noise Ratio), 격자 감소(lattice reduction), 유효 잡음(effective noise)-
Patent Agency Ranking
公开(公告)号：KR1020080091542A
公开(公告)日：2008-10-14
申请号：KR1020070034507
申请日：2007-04-09
Applicant: 삼성전자주식회사
CPC classification number: H04B7/0452 , H04L25/0204 , H04L27/18 , H04L27/34 , H04L27/3483 , H04B7/06
Abstract: An apparatus and a method for supporting a distortionless vector perturbation in a multiple antenna system are provided to enhance the output performance of the SINR(Signal-to-Interference-and Noise Ratio) value by combining with SLA(SeLective Mapping) algorithm. Label inserting devices(300-1,...,300-k) produce labels to the user information bits and insert the labels. Scramblers(302-1,...,302-k) scramble the user information bits with the inserted labels and produces the number N of independent candidate sequences. A modulator(304-1) modulates the number N of independent candidate sequences according to the corresponding modulation manners. A vector perturbation member(306-1) adds the limited offset vector so that the modulation symbols are mapped to the point of the operable area. A selector selects and outputs the candidate sequence having the maximum SNR(Signal to Noise Ratio) value among the candidate sequences. The vector perturbation member calculates the optimum offset vector and adds the calculated vector to a data vector.
Abstract translation: 提供一种用于支持多天线系统中的无失真矢量扰动的装置和方法，以通过与SLA（SeLective Mapping）算法结合来增强SINR（信号与干扰与噪声比）值的输出性能。 标签插入设备（300-1，...，300-k）为用户信息位产生标签并插入标签。 加扰器（302-1，...，302-k）用插入的标签对用户信息比特进行加扰，并产生独立候选序列的数目N. 调制器（304-1）根据相应的调制方式调制独立候选序列的数目N. 向量扰动构件（306-1）将有限的偏移矢量相加，使得调制符号映射到可操作区域的点。 选择器选择并输出候选序列中具有最大SNR（信噪比）值的候选序列。 矢量扰动构件计算最佳偏移矢量，并将计算出的矢量加到数据矢量上。
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公开(公告)号：KR1020080052900A
公开(公告)日：2008-06-12
申请号：KR1020060124656
申请日：2006-12-08
Applicant: 삼성전자주식회사
CPC classification number: H04B7/0417 , H04B7/0456 , H04B7/0639 , H04B7/0854
Abstract: A method and a system for transmitting data in a communication system are provided to calculate the MSE(Mean Square Error) of a precoding matrix in correspondence to a subcarrier group in an MIMO(Multi-Input Multi-Output) communication system and detect the optical precoding matrix, thereby reducing the amount of feedback information and reducing the complexity of a receiver and the operation amount for MSE calculation to improving the performance of the system. A transmitter(100) transmits data to a receiver(150) using transmission precoding matrixes for spatial multiplexing and rate adaptation. The transmitter comprises a modulator(110), a precoding unit, and N N-point IFFT(Inverse Fast Fourier Transform) units(130-1,130-2,~,130-n). The modulator modulates the input bit streams of the data to be transmitted to the receiver in correspondence to a predetermined modulation method. The precoding unit maps the data streams modulated through the modulator to a corresponding precoding matrix for spatial multiplexing and rate adaptation. The N N-point IFFT units performs the IFFT of the data streams precoded through the precoding unit and transmits the IFFT data streams to the receiver through N transmission antennas(Tx1,Tx2,~,Txn). The receiver comprises N N-point FFT(Fast Fourier Transform) units(160-1~160-n) and a precoding matrix selection and detection unit(170). The N N-point FFT units performs the FFT of the data received from the transmitter if the data is received through N reception antennas(Rx1~Rxn). The precoding matrix selection and detection unit estimates a channel through the FFT data stream, selects a precoding matrix corresponding to subcarriers included into the estimated channel, detects the optimal precoding matrix having MMSE(Minimum Mean Square Error) in the selected precoding matrixes, transmits feedback information including precoding matrix information corresponding to the detection to the transmitter, and outputs output bit streams received from the transmitter.
Abstract translation: 提供了一种用于在通信系统中发送数据的方法和系统，用于计算MIMO（多输入多输出）通信系统中与子载波组相对应的预编码矩阵的MSE（均方误差），并检测光 预编码矩阵，从而减少反馈信息的数量，降低接收机的复杂度，提高MSE计算的运算量，提高系统的性能。 发射机（100）使用用于空间复用和速率适配的传输预编码矩阵向接收机（150）发送数据。 发射机包括调制器（110），预编码单元和N N点IFFT（快速傅里叶逆变换）单元（130-1,130-2，...，130-n）。 调制器根据预定的调制方式来调制要发送到接收机的数据的输入比特流。 预编码单元将通过调制器调制的数据流映射到用于空间复用和速率适配的相应的预编码矩阵。 N个N点IFFT单元通过预编码单元执行预编码的数据流的IFFT，并通过N个发送天线（Tx1，Tx2，〜，Txn）将IFFT数据流发送到接收机。 接收机包括N个N点FFT（快速傅里叶变换）单元（160-1〜160-n）和预编码矩阵选择和检测单元（170）。 如果通过N个接收天线（Rx1〜Rxn）接收数据，则N个N点FFT单元执行从发射机接收的数据的FFT。 预编码矩阵选择和检测单元通过FFT数据流估计信道，选择对应于包括在估计信道中的子载波的预编码矩阵，检测在所选择的预编码矩阵中具有MMSE（最小均方误差）的最佳预编码矩阵，发送反馈 信息，包括与发送器的检测对应的预编码矩阵信息，并输出从发送器接收的输出比特流。
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公开(公告)号：KR100966522B1
公开(公告)日：2010-06-29
申请号：KR1020070034507
申请日：2007-04-09
Applicant: 삼성전자주식회사
CPC classification number: H04B7/0452 , H04L25/0204 , H04L27/18 , H04L27/34
Abstract: 본 발명은 다중안테나 시스템에서 일그러짐 없는 벡터 섭동을 제공하는 장치 및 방법에 관한 것으로, 다중안테나 시스템에서 일그러짐 없는 벡터 섭동을 제공하는 송신기에 있어서, 사용자 정보비트에 라벨을 생성하여 삽입하는 라벨 삽입기와, 상기 라벨이 삽입된 사용자 정보비트를 스크램블링하여 N개의 독립적인 후보 시퀀스들을 생성하는 스크램블러와, 상기 N개의 독립적인 후보 시퀀스들을 해당 변조방식에 따라 변조하는 변조기와, 상기 변조 심벌들을 실행가능한 영역의 성상점으로 매핑되도록 제한적 오프셋 벡터를 추가하는 벡터 섭동부를 포함하여, 연속적인 오프셋 벡터로 인한 일그러짐을 줄일 수 있다. 또한, SLA(SeLective Mapping) 알고리즘과 결합하여 SINR 값을 높게 출력하는 성능을 더 향상시키는 이점이 있다.
다중안테나, 벡터 섭동(Vector Perturbation), 프리코딩(Precoding), 방송채널. 이차 계획법(Quadratic Programming:QP), SLM(SeLective Mapping).-
公开(公告)号：KR1020090037271A
公开(公告)日：2009-04-15
申请号：KR1020070123347
申请日：2007-11-30
Applicant: 삼성전자주식회사
CPC classification number: H04B7/0632 , H04B7/0417
Abstract: An apparatus and a method for calculating channel quality information per stream in an MIMO(Multiple Input Multiple Output) wireless communication system are provided to generate per stream CQI(Channel Quality Information) for a CL(Closed Loop) scheme in an MIMO wireless communication system. A receiving end includes a plurality of radio frequency receivers(302-1 to 302-N), an MIMO detector(304), a channel estimator(306), and a CQI generator(308). The RF receivers each convert an RF signal received via respective antennas to a baseband signal. The MIMO detector detects the transmit signals per stream from the received signals output from the RF receivers. The detection manner of the MIMO detector differs according to various implements. The CQI generator generates per stream channel quality information using the channel information output from the channel estimator. The CQI generator includes a channel transformer, an LR operator, a classifier, a first SER calculator, a second SER calculator, an SINR converter, a rate adder, and a CQI determiner. The channel transformer generates a list of the possible modulation combinations and scales the channel matrixes output from the channel estimator according to the modulation combinations. The classifier checks whether the lattice reduction matrixes corresponding to the modulation combinations are the unit matrix or not. When the lattice reduction matrix is the unit matrix, the classifier outputs information of the corresponding modulation combination to the first SER calculator. When the lattice reduction matrix is not the unit matrix, the classifier outputs information of the corresponding modulation combination to the second SER calculator. The first SER calculator calculates the upper boundary of the per stream SER in the first manner for the unit matrix. In doing so, how to calculate the upper boundary of the per stream SER differs depending on the detection scheme adopted for the signal detection.
Abstract translation: 提供了一种用于在MIMO（多输入多输出）无线通信系统中计算每个流的信道质量信息的装置和方法，以在MIMO无线通信系统中为CL（闭环）方案生成每流CQI（信道质量信息） 。 接收端包括多个射频接收机（302-1至302-N），MIMO检测器（304），信道估计器（306）和CQI发生器（308）。 RF接收机每个将经由各个天线接收的RF信号转换为基带信号。 MIMO检测器从RF接收机输出的接收信号中检测每个流的发射信号。 MIMO检测器的检测方式根据各种实施方式而不同。 CQI发生器使用从信道估计器输出的信道信息生成每流信道质量信息。 CQI发生器包括信道变换器，LR操作器，分类器，第一SER计算器，第二SER计算器，SINR转换器，速率加法器和CQI确定器。 信道变换器生成可能的调制组合的列表，并根据调制组合对从信道估计器输出的信道矩阵进行缩放。 分类器检查与调制组合相对应的格值归一化矩阵是否为单位矩阵。 当格子简化矩阵是单位矩阵时，分类器将相应调制组合的信息输出到第一SER计算器。 当格子简化矩阵不是单位矩阵时，分类器将相应调制组合的信息输出到第二SER计算器。 第一个SER计算器以单位矩阵的第一种方式计算每个流SER的上限。 在这样做时，如何计算每个流SER的上限根据信号检测采用的检测方案而不同。
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公开(公告)号：KR1020080054953A
公开(公告)日：2008-06-19
申请号：KR1020060127699
申请日：2006-12-14
Applicant: 삼성전자주식회사
CPC classification number: H04L27/2614 , H04L27/2628
Abstract: A method and an apparatus for transmitting data in a communication system are provided to increase the transmission efficiency of the communication system, improve performance of the communication system, and reduce complexity of the communication system. An apparatus for transmitting data in a communication system includes a transmitter. The transmitter includes a modulation unit(305), a first reduction unit, a selection unit(309), and a second reduction unit. The modulation unit modulates data to be transmitted to a receiver in accordance with a predetermined modulation method. The first reduction unit reduces a PAPR(Peak to Average Power Ratio) of the transmitted data by optimizing the modulated data. The selection unit selects data having the least peak to average power ratio. The second reduction unit re-reduces the PAPR of the selected data. The transmitter transmits the re-reduced data to the receiver.
Abstract translation: 提供一种用于在通信系统中发送数据的方法和装置，以增加通信系统的传输效率，提高通信系统的性能，并降低通信系统的复杂性。 一种用于在通信系统中发送数据的装置包括发射机。 发射机包括调制单元（305），第一减小单元，选择单元（309）和第二减小单元。 调制单元根据预定的调制方式调制要发送给接收机的数据。 第一缩小单元通过优化调制数据来减少发送数据的PAPR（峰均功率比）。 选择单元选择峰均功率比最小的数据。 第二减少单元重新减少所选数据的PAPR。 发射机将重新缩小的数据发射到接收机。
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