ADAPTIVE MODULATION AND CODING IN A SC-FDMA SYSTEM
    71.
    发明申请
    ADAPTIVE MODULATION AND CODING IN A SC-FDMA SYSTEM 有权
    SC-FDMA系统中的自适应调制和编码

    公开(公告)号:US20100002575A1

    公开(公告)日:2010-01-07

    申请号:US12517152

    申请日:2007-11-22

    IPC分类号: H04J11/00 H04L23/02 H04W72/04

    摘要: A method and a system for transmitting data by a transmitter over a channel having a predetermined channel quality estimate, comprises the steps of splitting (S2P) input data stream (S40, S60, S80) to be transmitted into a plurality of data sub-streams (S40a, S40b, S40c); processing (SYM1, SYM2, SYMj) each of the plurality of data sub-streams (S40a, S40b, S40c) into a plurality of symbol subsets (S41, S42, S43) by selecting a certain scheme of coded-modulation (BPSK, QPSK, 16-QAM); processing, separately, each of the plurality of symbol subsets (S41, S42, S43), via a plurality of separate Discrete Fourier Transforms (DFT1, DFT2, DFT3), herein after denoted as DFTs, to obtain a plurality of DFT-precoded data sub-streams (S44, S45, S46); allocating each DFT-precoded data sub-stream (S44, S45, S46) in a frequency resource block (RB1, RB2, RB3), via a sub-carrier mapping module (SCM), so that for each data sub-stream (S40a, S40b, S40c) the selected scheme of coded-modulation (BPSK, QPSK, 16-QAM) is chosen in dependence of the values of the channel quality estimate at the frequencies of its own allocated frequency resource block (RB1, RB2, RB3).

    摘要翻译: 一种用于通过具有预定信道质量估计的信道通过发射机发送数据的方法和系统包括以下步骤:将要发送的(S2P)输入数据流(S40,S60,S80)分解为多个数据子流 (S40a,S40b,S40c); 通过选择一定的编码调制方式(BPSK,QPSK),将多个数据子流(S40a,S40b,S40c)中的每一个处理(SYM1,SYM2,SYMj)分割成多个符号子集(S41,S42,S43) ,16-QAM); 分别经由多个分离离散傅里叶变换(DFT1,DFT2,DFT3)中的多个符号子集(S41,S42,S43)中的每一个表示为DFT,以获得多个DFT预编码数据 子流(S44,S45,S46); 经由子载波映射模块(SCM)将每个DFT预编码数据子流(S44,S45,S46)分配到频率资源块(RB1,RB2,RB3)中,从而对于每个数据子流 ,S40b,S40c)根据在其自己分配的频率资源块(RB1,RB2,RB3)的频率处的信道质量估计的值来选择所选择的编码调制方案(BPSK,QPSK,16-QAM) 。

    Method for encoding data blocks
    72.
    发明申请
    Method for encoding data blocks 有权
    数据块编码方法

    公开(公告)号:US20090147764A1

    公开(公告)日:2009-06-11

    申请号:US11919872

    申请日:2006-04-25

    IPC分类号: H04B7/208

    摘要: Prior to transferring to a radio communication system, at least one data block is encoded according to predetermined quality-of-service requirements with the aid of a first code. Subsequently, the data block, encoded by the first code, is further encoded according to the radio transmission properties of a usable radio transmission source with the aid of a second code.

    摘要翻译: 在转移到无线电通信系统之前,借助于第一代码,根据预定的服务质量要求对至少一个数据块进行编码。 随后,借助于第二代码,根据可用无线电传输源的无线电传输属性进一步对由第一代码编码的数据块进行编码。

    Method for Digital Wireless Message Transmission Over a Broadband Mobile Radio Channel
    73.
    发明申请
    Method for Digital Wireless Message Transmission Over a Broadband Mobile Radio Channel 有权
    通过宽带移动无线电信道传输数字无线信息的方法

    公开(公告)号:US20090135941A1

    公开(公告)日:2009-05-28

    申请号:US12087582

    申请日:2006-12-12

    IPC分类号: H04B7/02

    摘要: In an OFDM multi carrier modulation method, M sub-carriers are used in a frequency band of a broadband mobile radio channel and several symbols are used in a time band. With application of a MIMO multi-antenna method with T transmitting antennae and R receiving antennae, for all sub-carriers and all symbols, a single, pre-determined, channel-matched transmission strategy is used, which is described by a maximum of T*R complex values on the signal side, independent of the species of the MIMO multi-antenna method and independent of the size of the frequency/time bands.

    摘要翻译: 在OFDM多载波调制方法中,在宽带移动无线信道的频带中使用M个子载波,在时间带中使用多个符号。 通过应用具有T个发射天线和R个接收天线的MIMO多天线方法,对于所有子载波和所有符号,使用单个预定义的信道匹配传输策略,其被描述为最大T * R信号侧的复数值,与MIMO多天线方法的种类无关,与频率/时间带的大小无关。

    METHOD AND STATION FOR TRANSMITTING DATA IN A RADIO COMMUNICATION SYSTEM
    74.
    发明申请
    METHOD AND STATION FOR TRANSMITTING DATA IN A RADIO COMMUNICATION SYSTEM 有权
    用于在无线电通信系统中发送数据的方法和站

    公开(公告)号:US20090029653A1

    公开(公告)日:2009-01-29

    申请号:US12241994

    申请日:2008-09-30

    IPC分类号: H04B7/00

    摘要: In a communication system, a first transmitting station transmits a transmission signal to a first receiving station for transmitting a sequence of data via a radio interface. The radio interface is monitored with respect to an interference signal from an interference source prior to transmission via at least one of the first transmitting station and the first receiving station. The transmission only begins if the radio interface is sufficiently free from interference for a moment in time.

    摘要翻译: 在通信系统中,第一发送站经由无线接口向第一接收站发送发送数据序列的发送信号。 在通过第一发送站和第一接收站中的至少一个发送之前,相对于来自干扰源的干扰信号来监视无线电接口。 如果无线电接口在一段时间内没有干扰,则传输仅开始。

    Method for switching a communications link to another channel (handover)
    76.
    发明授权
    Method for switching a communications link to another channel (handover) 有权
    将通信链路切换到另一信道的方法(切换)

    公开(公告)号:US07068625B1

    公开(公告)日:2006-06-27

    申请号:US09889179

    申请日:2000-01-10

    IPC分类号: H04Q7/00

    CPC分类号: H04W36/02

    摘要: The invention relates to a method for switching a communications link to another channel (handover) in a digital cellular mobile radio systems and a mobile radio system, the time of the handover being determined by a decision algorithm. Roughly generalized, the changeover to a new channel can take place between two radio systems or frequency bands within a radio system (external handover), between two radio cells within a cellular network (intercell handover) or within a radio cell (intracell handover). Each handover case, in turn, can include various type of handover.

    摘要翻译: 本发明涉及一种用于在数字蜂窝移动无线电系统和移动无线电系统中将通信链路切换到另一信道(切换)的方法,切换时间由决策算法确定。 大致推广,可以在无线电系统内的两个无线电系统或频带(外部切换),蜂窝网络内的两个无线电小区(小区间切换)或无线电小区(小区内切换))之间进行切换到新信道。 每个切换情况又可以包括各种类型的切换。

    Method for operating a radio system, emitting station and radio system
    77.
    发明申请
    Method for operating a radio system, emitting station and radio system 审中-公开
    操作无线电系统,发射台和无线电系统的方法

    公开(公告)号:US20060040675A1

    公开(公告)日:2006-02-23

    申请号:US10524289

    申请日:2003-07-16

    IPC分类号: H04Q7/20 H04M1/00

    CPC分类号: H04W16/28 H04W16/24 H04W48/08

    摘要: In a radio system having stations which are at least partially provided with a directional antenna, a first emitting station is provided with a directional antenna in a first spatial radio area. The first emitting station sends a direction information message indicating the spatial direction in which the data is to be transmitted. Transmission resources can be advantageously occupied based on the direction information message.

    摘要翻译: 在具有至少部分设置有定向天线的站的无线电系统中,第一发射站在第一空间无线电区域中设置有定向天线。 第一发射台发送指示要发送数据的空间方向的方向信息消息。 可以基于方向信息消息有利地占用传输资源。

    Method for encoding data message K' for transmission from sending station to receiving station as well as method for decoding, sending station, receiving station and software
    79.
    发明授权
    Method for encoding data message K' for transmission from sending station to receiving station as well as method for decoding, sending station, receiving station and software 失效
    用于从发送站到接收站的数据消息K'的编码方法以及用于解码,发送站,接收站和软件的方法

    公开(公告)号:US08112695B2

    公开(公告)日:2012-02-07

    申请号:US12226776

    申请日:2007-04-26

    IPC分类号: G06F11/00

    摘要: Irregular LDPC codes have a construction which allows one to obtain a number of codes with different length from a single prototype code with a parity check matrix given by H=[Hz Hi], where Hz specifies the well-known zigzag pattern in the corresponding Tanner graph. The parity check matrices for longer codes are obtained as [Hz′Πdiag(Hi, . . . , Hi)], where Hz′ specifies a longer zigzag pattern depending on the number of matrices Hi used, and Π represents some permutation. This allows one to construct the decoder for a longer code by reusing hardware components developed for decoding the prototype code.

    摘要翻译: 不规则LDPC码具有这样的结构,其允许从具有由H = [Hz Hi]给出的奇偶校验矩阵的单个原型代码获得具有不同长度的代码的结构,其中Hz指定相应的Tanner中众所周知的之字形模式 图形。 用于较长代码的奇偶校验矩阵获得为[Hz'&Pgr; diag(Hi,...,Hi)],其中Hz'根据所使用的矩阵Hi的数量指定较长的之字形模式,&Pgr; 代表一些排列。 这允许通过重新开发用于解码原型代码的硬件组件来构建更长代码的解码器。

    Method and transmitter for transmitting data in a multi-carrier system via a number of transmitting antennas
    80.
    发明授权
    Method and transmitter for transmitting data in a multi-carrier system via a number of transmitting antennas 有权
    用于经由多个发送天线在多载波系统中发送数据的方法和发射机

    公开(公告)号:US08111660B2

    公开(公告)日:2012-02-07

    申请号:US10553411

    申请日:2004-03-17

    IPC分类号: H04W4/00 H04M1/00

    摘要: A method transmits data by radio during which a frequency band is split into a plurality of subcarriers, and a plurality of antennas are used for transmitting. The data are split into a number of elements, which are to be respectively transmitted by each antenna, said number of elements corresponding to the number of subcarriers, whereby for each antenna, each element is respectively assigned to a subcarrier for transmitting, and at least two antennas on at least one subcarrier transmit different elements. Before an OFDM modulation for each antenna, each element is multiplied by an antenna-specific and element-specific factor. Alternatively, after an OFDM modulation for at least one antenna, the time sequence of the time-dependent signal generated on the basis of the OFDM modulation is reordered. A transmitter carries out the method.

    摘要翻译: 一种方法是通过无线电发送数据,在此期间将频带分割为多个子载波,并且使用多个天线进行发送。 将数据分割成若干要由各天线分别发送的元件,所述元件的数量对应于子载波数,由此对于每个天线,每个元件分别被分配给用于传输的子载波,并且至少 至少一个副载波上的两个天线发射不同的元件。 在每个天线的OFDM调制之前,每个元素乘以天线特定的和元素特定的因子。 或者,在至少一个天线的OFDM调制之后,重新排列基于OFDM调制生成的时间相关信号的时间序列。 发射机执行该方法。