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公开(公告)号：KR1020100086402A
公开(公告)日：2010-07-30
申请号：KR1020090030795
申请日：2009-04-09
Applicant: 삼성전자주식회사
Abstract: PURPOSE: An apparatus and a method for transmitting and receiving an uplink sounding signal in a broadband wireless communication system are provided to improve sounding and ranging performances by performing sounding and ranging through sequences extended through a cyclic shift operation. CONSTITUTION: Among allocated or selected sequence length, Zadof-Chu sequence root index, orthogonal code index and cyclic shift offset, a sequence generator(904) generates the sequences corresponding to the combination of at least two components. A signal sequence generator(906) generates the signal sequences corresponding to the sequences, and a transmitter(914) transmits the signal strings through the corresponding channels.
Abstract translation: 目的：提供一种用于在宽带无线通信系统中发送和接收上行探测信号的装置和方法，用于通过循环移位操作延伸的序列进行探测和测距来提高探测和测距性能。 构成：在分配或选择的序列长度中，Zadof-Chu序列根索引，正交码索引和循环移位偏移，序列生成器（904）产生对应于至少两个分量的组合的序列。 信号序列发生器（906）产生对应于这些序列的信号序列，并且发射机（914）通过相应的信道发送信号串。
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公开(公告)号：KR100895992B1
公开(公告)日：2009-05-07
申请号：KR1020050086872
申请日：2005-09-16
Applicant: 삼성전자주식회사
CPC classification number: H04L1/0656 , H04B7/063 , H04B7/0634 , H04B7/0689 , H04L25/0206 , H04L25/0224 , H04L27/2608
Abstract: 본 발명은 다중 안테나를 사용하는 무선통신시스템에서 서로 다른 안테나 개수를 사용하는 사용자들에게 동시에 서비스를 제공하기 위한 장치 및 방법에 관한 것이다. 본 발명에 따른 복수의 송신안테나들을 이용하는 제1 다중안테나모드 및 상기 제1 다중안테나모드의 송신안테나 개수보다 많은 개수의 송신안테나들을 이용하는 제2 다중안테나모드를 서비스하는 무선통신시스템에서 기지국의 통신 방법에 있어서, 상기 제2 다중안테나모드로 서비스를 제공할 단말기를 결정하는 과정과, 상기 단말기로부터 사운딩 신호를 수신하는 과정과, 상기 수신된 사운딩 신호를 이용해 역방향 채널을 추정하고, 상기 추정된 역방향 채널값들을 이용해서 순방향 채널값들을 획득하는 과정과, 상기 획득된 순방향 채널값들을 이용해서 상기 단말기로 상기 제2 다중안테나모드를 서비스하는 과정을 포함한다. 이와 같은 본 발명은 확장 MIMO모드를 위해 새로운 프레임 구조를 필요로 하지 않기 때문에 사업자가 새로운 시스템을 설계하고 설치할 필요가 없다.
MIMO, 안테나 확장, SVD, 빔포밍, 처리량, 링크 성능-
公开(公告)号：KR1020080075957A
公开(公告)日：2008-08-20
申请号：KR1020070015194
申请日：2007-02-14
Applicant: 삼성전자주식회사
CPC classification number: H04L1/0017 , H04B7/063 , H04L1/0025
Abstract: An apparatus and a method for selecting transfer modes in a multi-antenna system are provided to increase the gain of system capacity by comparing MPRs(Modulation order Product code Rates) dependent on the channel states of multi-antenna transfer modes and applying a suitable multi-antenna transfer mode according to a channel environment. If a signal is received from a base station(401), a terminal obtains the CINR(Carrier to Interference and Noise Ratio) of a diversity mode and the CINR of a spatial multiplexing mode, based on the preamble or pilot signal contained in the received signal(403). Then the terminal confirms MPRs dependent on the obtained CINRs respectively(405). The terminal compares the MPR of the diversity mode with the MPR of the spatial multiplexing mode(407). If the MPR of the spatial multiplexing mode is higher than the MPR of the diversity mode, the terminal selects the spatial multiplexing mode(409). In case the MPR of the spatial multiplexing mode is lower than or equal to the MPR of the diversity mode, however, the terminal selects the diversity mode(413). Then the terminal reports the selected mode to the base station(411).
Abstract translation: 提供了一种用于选择多天线系统中的传输模式的装置和方法，通过比较取决于多天线传输模式的信道状态的MPR（调制顺序产品码率）和应用多天线传输模式的信道状态来增加系统容量的增益 - 根据通道环境传输模式。 如果从基站（401）接收到信号，则终端基于接收到的前导码或导频信号，获得分集模式的CINR（载波对干扰和噪声比）和空间复用模式的CINR 信号（403）。 然后，终端分别确定取决于获得的CINR的MPR（405）。 终端将分集模式的MPR与空间复用模式的MPR进行比较（407）。 如果空间复用模式的MPR高于分集模式的MPR，则终端选择空间复用模式（409）。 然而，在空间复用模式的MPR小于或等于分集模式的MPR的情况下，终端选择分集模式（413）。 然后终端将所选模式报告给基站（411）。
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公开(公告)号：KR1020080049892A
公开(公告)日：2008-06-05
申请号：KR1020060120403
申请日：2006-12-01
Applicant: 삼성전자주식회사
CPC classification number: Y02D70/44 , H04L25/0204 , H04B7/0854 , H04L1/0048
Abstract: An apparatus and a method for canceling interference in a broadband wireless access system are provided to remove interference by an adjacent cell in an uplink to reduce the operating point of the uplink, thereby transmitting uplink data with low power and saving the power of a terminal. A method for canceling interference comprises the following steps of: configuring a receiving vector(Y), the channel matrix(HD) of desired signals, and the channel matrix of interference signals(301); arranging the channel matrix of interference signals in the order of a channel size(303); connecting the HD and the arranged channel matrix of the interference signals to reconfigure the entire channel matrix(HAIC)(305); operating the metric of a k-numbered interference channel in the reconfigured HAIC(307); operating an interference removing a filter coefficient(W) based on ZF(Zero Forcing) if the metric is greater than or equal to a reference value(311); and removing interference(313).
Abstract translation: 提供一种用于消除宽带无线接入系统中的干扰的装置和方法，以消除上行链路中相邻小区的干扰，以减少上行链路的工作点，从而传输低功率的上行数据，节省终端的功率。 消除干扰的方法包括以下步骤：配置接收向量（Y），所需信号的信道矩阵（HD）和干扰信号的信道矩阵（301）; 以信道大小（303）的顺序排列干扰信号的信道矩阵; 连接HD和排列的干扰信号的信道矩阵以重新配置整个信道矩阵（HAIC）（305）; 操作重配置的HAIC（307）中的k编干扰信道的度量; 如果度量大于或等于参考值（311），则操作基于ZF（零强制）去除滤波器系数（W）的干扰; 和去除干扰（313）。
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公开(公告)号：KR1020070090520A
公开(公告)日：2007-09-06
申请号：KR1020060020334
申请日：2006-03-03
Applicant: 삼성전자주식회사
CPC classification number: H04B17/336
Abstract: An apparatus and a method for measuring an SINR(Signal-to-Interference and Noise Ratio) by using a preamble in a mobile communication system are provided to enable more precise estimation for the SINR although selective frequency fading is too much, by using the fact that density of the preamble is higher than a pilot. An SINR estimator calculates the average noise power by using the CP(Cyclic Prefix) of a received signal. On the assumption that an identical frequency domain channel exists between neighbor sub-carriers of an identical segment, the SINR estimator calculates the signal power of a serving segment(601), calculates average power of the serving segment, and then calculates interference power of the serving segment by using the difference between the sum of the average noise power and the signal power of the serving segment and the calculated average power. The SINR estimator calculates the average power of each interference segment, and obtains the interference power of each interference segment, based on the difference between the average noise power and the calculated average power(603). The SINR estimator divides the signal power of the serving segment by the sum of the average noise power and the total interference power and obtains the SINR of the received signal(605).
Abstract translation: 提供了一种用于在移动通信系统中通过使用前置码来测量SINR（信号与干扰和噪声比）的装置和方法，以便尽管选择性频率衰落太多，但是通过使用事实 前导码的密度高于导频。 SINR估计器通过使用接收信号的CP（循环前缀）来计算平均噪声功率。 假设在同一段的相邻子载波之间存在相同的频域信道，则SINR估计器计算服务段（601）的信号功率，计算服务段的平均功率，然后计算干扰功率 通过使用平均噪声功率和服务段的信号功率的和之差与计算的平均功率之间的差来实现。 SINR估计器根据平均噪声功率和计算出的平均功率之差，计算每个干扰段的平均功率，并获得每个干扰段的干扰功率（603）。 SINR估计器将服务段的信号功率除以平均噪声功率和总干扰功率之和，并获得接收信号的SINR（605）。
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Patent Agency Ranking
公开(公告)号：KR1020070073338A
公开(公告)日：2007-07-10
申请号：KR1020060001116
申请日：2006-01-04
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H04W72/046 , H04W72/042 , H04W72/048 , H04W72/06 , H04W72/082 , H04W72/1231 , H04W88/08 , H04B1/7107
Abstract: A method and a system for transmitting data in a communication system are provided to enable MSs(Mobile Stations), which suffers cell interference from a neighbor cell, to easily remove the cell interference by segmenting a data transmission domain into an interference domain and a non-interference domain, and then transmitting data through either the interference domain or the non-interference domain according to feedback information received from each MS. An MS measures the CINR(Carrier to Interference Noise Ratio) or RSSI(Received Signal Strength Indicator) of a signal received from a serving BS(Base Station) and compares the measured value with a preset threshold(801,802). According to the comparison result, the MS creates an interference domain allocation flag and transmits the created flag information to the serving BS(805,807). Based on the flag information, the serving BS judges whether the MS exists in an interference domain or a non-interference domain(809). In case the MS exists in the interference domain, the serving BS allocates interference domain resources to the MS. Then, the serving BS inserts interference domain allocation information in the MAP message domain of a frame and transmits the frame to the MS(811,815).
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，以使得受到来自相邻小区的小区干扰的MS（移动站）能够通过将数据传输域分割成干扰域和非干扰域来容易地去除小区干扰， 干扰域，然后根据从每个MS接收到的反馈信息，通过干扰域或非干扰域发送数据。 MS测量从服务BS（基站）接收的信号的CINR（载波干扰噪声比）或RSSI（接收信号强度指示符），并将测量值与预设阈值（801,802）进行比较。 根据比较结果，MS创建干扰域分配标志，并将创建的标志信息发送给服务BS（805,807）。 基于标志信息，服务BS判断MS是否存在于干扰域或非干扰域（809）。 在MS存在于干扰域中的情况下，服务BS向MS分配干扰域资源。 然后，服务BS在帧的MAP消息域中插入干扰域分配信息，并将该帧发送给MS（811,815）。
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公开(公告)号：KR1020070063115A
公开(公告)日：2007-06-19
申请号：KR1020050123024
申请日：2005-12-14
Applicant: 삼성전자주식회사
CPC classification number: H04L1/005 , H04L1/0048 , H04L25/03242 , H04L27/2647 , H04L2025/03426
Abstract: An apparatus and a method for IDD(Iterative Detection and Decoding) in a multi-antenna communication system are provided to improve decoding performance with a small number of iteration times by updating a list using the supplemental information delivered to a MIMO(Multiple Input Multiple Output) detector from a decoder, in the case of using an IDD scheme in a MIMO communication system. An IDD receiver in a MIMO communication system comprises a MIMO detection part(402), a decoder(408), a hard decision part(413), and a list updating part(401). The MIMO detection part(402) generates the soft decision values of coded bits using a list composed of an Rx vector, prior information from the decoder(408), and candidate code symbol vectors. The decoder(408) executes SISO(Soft-Input/Soft-Output) decoding for the soft decision values, generated from the MIMO detection part(402), using prior information and generates the soft decision values of coded bits. The hard decision part(413) carries out hard decision for the soft decision values outputted from the decoder(408) and generates code symbol vectors. The list updating part(401) creates a list of candidate code symbol vectors using the Rx vector at the first iteration and provides it to the MIMO detection part(402). At the next iterations, the list updating part(401) updates the list using the code symbol vectors outputted from the hard decision part(413) and provides the updated list to the MIMO detection part(402).
Abstract translation: 提供了一种用于多天线通信系统中的IDD（迭代检测和解码）的装置和方法，以通过使用传递给MIMO的补充信息（多输入多输出）来更新列表来以少量的迭代次数来提高解码性能 ）检测器，在MIMO通信系统中使用IDD方案的情况下。 MIMO通信系统中的IDD接收机包括MIMO检测部分（402），解码器（408），硬判决部分（413）和列表更新部分（401）。 MIMO检测部分（402）使用由Rx向量，来自解码器（408）的先验信息和候选码元向量组成的列表生成编码比特的软判决值。 解码器（408）使用先验信息对从MIMO检测部分（402）生成的软判决值执行SISO（软输入/软输出）解码，并生成编码比特的软判决值。 硬判定部（413）对从解码器（408）输出的软决策值进行硬判定，生成代码符号向量。 列表更新部分（401）在第一次迭代中使用Rx向量创建候选码元向量的列表，并将其提供给MIMO检测部分（402）。 在下一次迭代中，列表更新部分（401）使用从硬判决部分（413）输出的代码符号向量更新列表，并将更新的列表提供给MIMO检测部分（402）。
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公开(公告)号：KR1020070063111A
公开(公告)日：2007-06-19
申请号：KR1020050123014
申请日：2005-12-14
Applicant: 삼성전자주식회사
IPC: H04L1/02
CPC classification number: H04L1/005 , H04B7/0417 , H04B7/0848 , H04L1/0052 , H04L1/06
Abstract: A partial iterative detection and decoding receiver and a method in a Multi- Input Multi-Output are provided to enhance performance of the receiver by increasing iterative times limited by complexity. A partial iterative detection and decoding receiver in a Multi-Input Multi-Output includes a MIMO(Multi-Input Multi-Output) producer(301), a de- interleaver(303), a channel decoder(305), a interleaver(307), a hard decision value producer(309), a reliability determiner(311), and first and second multipliers(313,315). The MIMO detector(301) produces first posteriori information(LD1) for each byte by using a received signal and first priori information. The first multiplier(313) produces first external information by using a difference of the posteriori information(LD1) and the first priori information. The de-interleaver(303) generates and outputs second priori information by performing de-interleaving of the first external information provided by the first multiplier. The channel decoder(305) produces by using the second priori information provided by the de-interleaver(303). The reliability determiner(311) feedbacks a MIMO symbols including bit which generates reversion of an LLR(Log Likelihood Ratio) code. The second multiplier(315) produces the second external information. The interleaver(307) generates and outputs the first priori information. The hard decision value producer(309) decides and outputs a hard decision value of bit not to perform an information exchange or an LLR re- calculation.
Abstract translation: 提供部分迭代检测和解码接收器以及多输入多输出中的方法，以通过增加复杂度限制的迭代次数来增强接收机的性能。 多输入多输出中的部分迭代检测和解码接收器包括MIMO（多输入多输出）生成器（301），去交织器（303），信道解码器（305），交织器（307） ），硬决策值生成器（309），可靠性确定器（311）以及第一和第二乘法器（313,315）。 MIMO检测器（301）通过使用接收信号和第一先验信息为每个字节产生第一后验信息（LD1）。 第一乘法器（313）通过使用后验信息（LD1）和第一先验信息的差来产生第一外部信息。 解交织器（303）通过执行由第一乘法器提供的第一外部信息的解交织来产生并输出第二先验信息。 信道解码器（305）通过使用解交织器（303）提供的第二先验信息产生。 可靠性确定器（311）反馈包括生成LLR（对数似然比）代码的反转的位的MIMO符号。 第二乘法器（315）产生第二外部信息。 交织器（307）生成并输出第一先验信息。 硬决策值生成器（309）决定并输出不执行信息交换或LLR重新计算的位的硬判决值。
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公开(公告)号：KR1020070039285A
公开(公告)日：2007-04-11
申请号：KR1020050094442
申请日：2005-10-07
Applicant: 삼성전자주식회사
IPC: H04B7/04
CPC classification number: H04B7/04 , H04L25/03006
Abstract: 본 발명은 K개의 송신 안테나를 통해 신호를 전송하는 송신기와 송신 안테나의 수와 같거나 많은 L개의 수신안테나를 통해 상기 신호를 수신하는 수신기를 포함하는 다중 입출력 통신 시스템에 적용하기 위한 신호 검출 방법 및 신호 검출 장치를 제안한다.
이를 위해 본 발명에서는 채널 전달 행렬을 업퍼 트라이앵글 (upper triangle) 구조를 가지는 복수의 행렬들로 표현하고, 상기 복수의 행렬들 각각을 상기 채널 행렬보다 차원이 낮은 적어도 두 개의 서브 행렬들로 분리한다. 그리고 상기 적어도 두 개의 서브 행렬들 중 최하위 서브 행렬에 의해 표현되는 수신신호를 복호화하여 전송심벌들을 검출하도록 한 후 상기 검출된 전송심벌들을 상위 서브 행렬에 적용함으로써, 나머지 전송심벌들을 검출하도록 한다.
다중입출력(MIMO), Modified-ML 기법, 신호 검출 기법, Lottice reduction-
公开(公告)号：KR1020070016504A
公开(公告)日：2007-02-08
申请号：KR1020050071239
申请日：2005-08-04
Applicant: 삼성전자주식회사
IPC: H04B7/06
CPC classification number: H04B7/0697 , H04L1/0631 , H04L25/0204
Abstract: 다중안테나 시스템에서 공간 멀티플랙싱(Spatial Multiplexing) 방식의 검출 장치 및 방법에 관한 것으로서, 수신 신호의 채널을 추정한 후, 상기 추정된 채널들의 채널 벡터의 크기를 이용하여 내림차순으로 정렬하는 과정과, 상기 정렬된 채널에서 채널 상태가 가장 좋은 채널을 널링하여 최소 단위 서브시스템을 생성하는 과정과, 상기 최소 단위 서브시스템에서 MML(Modified Maximum Likelihood)을 수행하여 소정개수의 전송 신호 벡터들을 산출하는 과정과, 상기 소정개수의 전송 신호 벡터들의 유클리드 거리(Euclidean Distance)를 계산하여 최소 유클리드 거리를 갖는 전송 신호 벡터를 선택하는 과정을 포함하여, 수신기가 ML(Maximum Likelehood)에 근접한 성능을 가지며, SIC(Successive Interference Cancellation)수준의 복잡도로 얻을 수 있는 이점이 있다.
최대 우도 수신기, 정렬, MML, 서브시스템
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