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1. 发明授权

US06950461B2 Modems utilizing low density parity check codes 有权
标题翻译：调制解调器利用低密度奇偶校验码
公开(公告)号：US06950461B2
公开(公告)日：2005-09-27
申请号：US09961839
申请日：2001-09-24
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H04L1/00 , H04L27/26 , H04B1/38 , H04L5/16
CPC分类号： H04L1/0041 , H03M13/1148 , H04L1/0057 , H04L27/2602
摘要： A modem includes an LDPC encoder which utilizes a deterministic H-matrix, optionally via a generation matrix, to generate redundant parity bits for a bit block. Ones are placed into the H-matrix in a completely diagonal manner with diagonals subdivided into sets of diagonals. The first diagonal in each set i begins with coordinates H(1,k), where k=(1+(i*Mj)). The remaining diagonals in the sets are offset from the first diagonals so that the column distances between any two pairs of diagonals is unique. In another embodiment, the H-matrix is determined by assigning “1s” in a first column, and then assigning “1s” of subsequent columns deterministically by causing each “1” in a previous ancestor column to generate a “1” in the next descendant column based on the rule that a descendant is placed one position below an ancestor except where rectangles would be generated. Interrupted descending diagonals are generated.
摘要翻译：调制解调器包括LDPC编码器，其可选地通过生成矩阵来利用确定性H矩阵来产生位块的冗余奇偶校验位。将对象以完全对角线方式放置在H矩阵中，将对角线细分成一组对角线。每组i中的第一个对角线以坐标H（1，k）开始，其中k =（1+（i * M））。组中的剩余对角线与第一对角线偏移，使得任何两对对角线之间的列距离是唯一的。在另一个实施例中，通过在第一列中分配“1”来确定H矩阵，然后通过使先前的祖先列中的每个“1”在下一个子序列中产生“1”来确定地分配后续列的“1” 后代列基于规则，后代被放置在祖先以下的一个位置，除了生成矩形。产生中断下降的对角线。

2. 发明申请

US20050085249A1 Method, apparatus and system for pilotless frequency offset compensation in multipoint-to-point wireless systems with OFDM 审中-公开
标题翻译：用于具有OFDM的多点对点无线系统中的无引导频偏补偿的方法，装置和系统
公开(公告)号：US20050085249A1
公开(公告)日：2005-04-21
申请号：US10685615
申请日：2003-10-16
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H04B1/00 , H04B7/00 , H04B7/005 , H04B15/00 , H04L27/26
CPC分类号： H04L27/2657 , H04L27/2679
摘要： Apparatus, methods and systems for frequency offset compensation in multipoint-to-point orthogonal frequency division multiplexing (OFDM) systems are provided. In the hub, frequency offset estimates are made in the frequency domain for each group of carriers of the OFDM system. The hub then transmits indications (parameters) of the frequency offset for each group of carriers to the nodes. Frequency offset compensation is then accomplished in each node, preferably in the time domain.
摘要翻译：提供了多点对点正交频分复用（OFDM）系统中用于频偏补偿的装置，方法和系统。在集线器中，在OFDM系统的每个载波组的频域中进行频偏估计。然后，中枢向每个节点发送每组载波的频率偏移的指示（参数）。然后，在每个节点中，优选在时域中实现频偏补偿。

3. 发明授权

US06862552B2 Methods, apparatus, and systems employing soft decision decoding 失效
标题翻译：采用软判决解码的方法，装置和系统
公开(公告)号：US06862552B2
公开(公告)日：2005-03-01
申请号：US10342519
申请日：2003-01-15
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H04L25/06 , H04L27/26 , G06F15/04
CPC分类号： H04L25/067 , H04L27/2647
摘要： An easily implementable soft decision decoding (SDD) metric is provided for telecommunications systems and apparatus. The SDD metric is based on weighted average distances or weighted minimum distances between scaled received signals and all reference signals related to the corresponding binary symbol. An important property of the SDD metric of the invention is that the distance weight is completely defined by the received signal scaling factor which is readily available as a result of conventional frequency domain equalization procedures. The invention is particularly advantageous in wireless systems having variable parameters such as wireless OFDM systems with selective fading.
摘要翻译：为电信系统和设备提供了一种易于实现的软判决解码（SDD）度量。 SDD度量基于缩放的接收信号与与相应二进制符号相关的所有参考信号之间的加权平均距离或加权最小距离。本发明的SDD度量的一个重要特性是距离权重由接收到的信号缩放因子完全定义，该缩放因子可以作为常规频域均衡过程的结果容易获得。本发明在具有可变参数的无线系统中是特别有利的，例如具有选择性衰落的无线OFDM系统。

4. 发明授权

US5822371A Mapper for high data rate signalling 失效
标题翻译：用于高数据速率信号的映射器
公开(公告)号：US5822371A
公开(公告)日：1998-10-13
申请号：US801066
申请日：1997-02-14
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H03M7/00 , H04B14/02 , H04B14/04 , H04L25/49 , H04L27/00 , H04L27/02 , H04L27/34
CPC分类号： H04L27/3411 , H04B14/023 , H04B14/048 , H04L25/4927
摘要： A pulse amplitude modulated (PAM) mapper includes a constellation matrix memory which stores indications of a plurality of different constellations, wherein at least one of the different stored constellations is of different dimension than another of the stored constellations. The constellations are used individually or together to support a plurality of different modem data rates. In a preferred embodiment, in addition to the constellation matrix memory, the mapper includes a logic block, a constellation controller, a PAM code generation block, and an output register. The logic block receives incoming bits of information, groups the bits as a function of the desired or agreed upon bit rate as indicated by the constellation controller, and provides a plurality of each group of bits to the PAM code generation block, and one or more sign bits to the output register. The PAM code generation block uses the provided bits to choose at least one point from one of the constellations, and uses each chosen constellation point to generate a seven-bit PAM code (typically .mu.-law or A-law code value) word. Each seven-bit output is provided to the output register, and together with associated sign bits generates output bytes. Algorithms are provided for choosing multiple points from the 2D and higher dimensional constellations from provided groups of bits.
摘要翻译：脉冲幅度调制（PAM）映射器包括存储多个不同星座的指示的星座矩阵存储器，其中不同存储的星座中的至少一个与所存储的星座中的另一个具有不同的维度。星座单独或一起用于支持多种不同的调制解调器数据速率。在优选实施例中，除了星座矩阵存储器之外，映射器包括逻辑块，星座控制器，PAM码生成块和输出寄存器。逻辑块接收输入的信息比特，将比特分组为由星座控制器指示的所需或约定的比特率的函数，并且向PAM码生成块提供多个每组比特，并且提供一个或多个符号位到输出寄存器。 PAM代码生成块使用提供的位从一个星座中选择至少一个点，并使用每个选择的星座点来生成七位PAM码（通常为μ-或A律代码值）字。每个七位输出都提供给输出寄存器，与相关的符号位一起生成输出字节。提供算法用于从提供的位组的2D和更高维度星座中选择多个点。

5. 发明授权

US09197470B2 Data transmission via multi-path channels using orthogonal multi-frequency signals with differential phase shift keying modulation 有权
标题翻译：使用具有差分相移键控调制的正交多频信号通过多路径信道进行数据传输
公开(公告)号：US09197470B2
公开(公告)日：2015-11-24
申请号：US12245952
申请日：2008-10-06
申请人： Yuri Okunev
发明人： Yuri Okunev
IPC分类号： H04L27/28 , H04L27/20 , H04L27/26
CPC分类号： H04L27/2697 , H04B1/1081 , H04L27/206 , H04L27/2602 , H04L27/2627 , H04L27/2662 , H04L27/2675 , H04L27/2676
摘要： A method and an apparatus relating to an OFDM data communications system where the sub-carriers are modulated using differential quadrature phase-shift keying (DQPSK). The multi-carrier transmitted signal is directly generated using a summation of pre-computed sample points. As part of the multi-carrier signal generation, a signal for the guard interval is established. In an acoustic application of this approach, direct radiation of the sub-carrier approach is facilitated. Symbol synchronization in the receiver is based on signal correlation with the missed sub-carrier. Separation of the sub-carriers in the receiver uses a correlation of the received signal and reference signals that are derived from a table of pre-computed values. Optimal non-coherent processing of the sub-carriers without any phase tracking procedures is achieved.
摘要翻译：涉及使用差分正交相移键控（DQPSK）来调制子载波的OFDM数据通信系统的方法和装置。使用预先计算的采样点的总和直接生成多载波传输信号。作为多载波信号生成的一部分，建立了用于保护间隔的信号。在这种方法的声学应用中，促进了子载波方法的直接辐射。接收机中的符号同步基于与丢失的子载波的信号相关性。接收机中的子载波的分离使用从预先计算的值表导出的接收信号和参考信号的相关性。实现了没有任何相位跟踪程序的子载波的最优非相干处理。

6. 发明授权

US07308049B2 Method and apparatus for noncoherent signal processing in pilotless wireless systems 失效
标题翻译：无人驾驶无线系统中非相干信号处理的方法和装置
公开(公告)号：US07308049B2
公开(公告)日：2007-12-11
申请号：US10772962
申请日：2004-02-05
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H03D3/22
CPC分类号： H04L27/2332
摘要： Methods, apparatus and systems for implementing an algorithm for N-symbol noncoherent processing of M-ary DPSK signals in a pilotless, wireless system is provided. The algorithm is carried out with (N−1) recurrent steps (iterations) plus a decision step. Each iterative step includes simple trigonometrical transformation of quadrature components of the current symbol and summation of the transforms with results of the previous step. A final N-symbol decision regarding the current transmitted symbol corresponds to the vector of maximum length, calculated after the (N−1)-th step of the iterative procedure. The general algorithm is optionally implemented with one or more intersymbol processors, one or more memory blocks for saving results of the intersymbol processors, and a decision block. In addition, shift registers for quadrature components of the received signal may be utilized.
摘要翻译：提供了一种用于在无人驾驶无线系统中实现M-DY DPSK信号的N符号非相干处理算法的方法，装置和系统。该算法用（N-1）循环步骤（迭代）加上决策步骤进行。每个迭代步骤包括当前符号的正交分量的简单三角变换和变换的求和与前一步骤的结果。关于当前发送符号的最终N符号判定对应于在迭代过程的第（N-1）步之后计算的最大长度向量。一般算法可选地使用一个或多个符号间处理器，用于保存符号间处理器的结果的一个或多个存储器块以及判定块来实现。此外，可以利用接收信号的正交分量的移位寄存器。

7. 发明申请

US20070177694A1 Method and apparatus for signal processing in RFID receivers 审中-公开
标题翻译： RFID接收机信号处理方法和装置
公开(公告)号：US20070177694A1
公开(公告)日：2007-08-02
申请号：US11332220
申请日：2006-01-17
申请人： Yuri Okunev , Kevin Powell
发明人： Yuri Okunev , Kevin Powell
IPC分类号： H04L27/22
CPC分类号： H04L27/14
摘要： The present invention provides methods and apparatuses for demodulation and decoding of backscattered RFID tag signals, represented by their in-phase and quadrature components at the output of the demodulator in the receiver portion of a reader interrogator. Correlation coefficients for the in-phase and quadrature components of the received signal are calculated over a shifted bit interval. Performing a correlation over a shifted bit interval relative to the real bit interval allows the base-band receiver to involve a two-bit interval in making a decision about each transmitted bit. In contrast, in a conventional decoding algorithm, a single bit interval is involved in the decision-making process. Thus, the current method provides a 3 dB energy gain compared to the conventional method. A single zero-mean reference signal is used to compute correlation coefficients, eliminating constant components of the received signal, and simplifying digital implementation of the base-band receiver. A value of the output data is determined based on the combined correlation coefficients.
摘要翻译：本发明提供了用于在读取器询问器的接收机部分中的解调器的输出端由其同相和正交分量表示的背散射RFID标签信号的解调和解码的方法和装置。在移位的位间隔上计算接收信号的同相和正交分量的相关系数。在相对于实际比特间隔的移位比特间隔执行相关性允许基带接收机涉及两比特间隔以作出关于每个发送比特的决定。相比之下，在传统的解码算法中，在决策过程中涉及单个位间隔。因此，与常规方法相比，当前的方法提供了3dB的能量增益。使用单个零均值参考信号来计算相关系数，消除接收信号的常数分量，并简化基带接收机的数字实现。基于组合的相关系数确定输出数据的值。

8. 发明授权

US07203459B2 Mode adaptation in wireless systems 有权
标题翻译：无线系统中的模式适配
公开(公告)号：US07203459B2
公开(公告)日：2007-04-10
申请号：US10406776
申请日：2003-04-03
申请人： Yuri Goldstein , Yuri Okunev
发明人： Yuri Goldstein , Yuri Okunev
IPC分类号： H04B17/00
CPC分类号： H04L1/0003 , H04B17/26 , H04B17/336 , H04B17/382 , H04L1/0009 , H04L1/0021 , H04L1/0025 , H04L1/0045 , H04L1/208 , H04L5/0007 , H04L5/0046 , H04L27/2647
摘要： Methods, apparatus, and systems for mode assignment and mode adaptation to channel conditions are provided which are based on estimations of real signal-to-noise ratios (SNR) for each frequency carrier bearing information during a data transmission session. The invention utilizes two principal procedures: signal-to-noise ratio (SNR) estimation, and a corresponding mode assignment. SNR estimation is obtained by an averaging of squared Euclidean distances between normalized received signals and reference signals corresponding to either current hard decisions from the output of a demodulator or soft decisions provided by a decoder, for each frequency carrier bearing random information. Using the SNR estimations, various algorithms for determining mode assignment are provided.
摘要翻译：提供了用于模式分配和对信道条件的模式适配的方法，装置和系统，其基于在数据传输会话期间针对每个承载载波信息的实际信噪比（SNR）的估计。本发明利用两个主要程序：信噪比（SNR）估计和对应的模式分配。 SNR估计是通过归一化的接收信号与对应于来自解调器的输出的当前硬判决的参考信号之间的平方欧几里德距离获得的，或者对于承载随机信息的每个频率载波，由解码器提供的软判决的平均。使用SNR估计，提供用于确定模式分配的各种算法。

9. 发明授权

US06542551B1 Translation table and constellation design for a PCM modem subjected to alternating robbed bit signaling 失效
标题翻译：用于经过交替抢夺位信令的PCM调制解调器的翻译表和星座设计
公开(公告)号：US06542551B1
公开(公告)日：2003-04-01
申请号：US09315475
申请日：1999-05-20
申请人： Yuri Okunev , Vitaly Drucker , Qin Wang , Yuri Goldstein
发明人： Yuri Okunev , Vitaly Drucker , Qin Wang , Yuri Goldstein
IPC分类号： H04B1404
CPC分类号： H04L25/4927 , H04B14/048 , H04J3/125
摘要： The receiver of a PCM modem utilizes the V.90 TRN1d training signal for detecting whether any of the six slots of the received signal may be subject to alternating robbed bit signaling (ARBS), and what the alternating robbed bit signaling pattern may be. This is accomplished by accumulating the received level over a plurality of frames for each slot and by comparing the received levels for each slot to an average level for that slot. If the difference between the received levels and the average levels exceeds a threshold, the slot is determined to be subject to ARBS. Where a slot is subject to ARBS, DIL sequence signals for frames of the alternating robbed bit signaling slot having LSB=0 and LSB=1 are accumulated separately (if available) in order to generate two translation tables (TRT0, TRT1) for that slot. Where the DIL sequence is found only in the frames having the alternating robbed bit signaling slot having LSB=0 or having LSB=1, only one translation table can be generated. Different algorithms are provided for designing a constellation for the alternating robbed bit signaling slot depending on (a) whether two translation tables were generated for the slot, (b) whether the frame-to-TRT correspondence is known, and (c) where only one translation table is generated, whether the translation table generated was TRT0 or TRT1.
摘要翻译： PCM调制解调器的接收机利用V.90 TRN1d训练信号来检测接收信号的六个时隙中的任一个是否可能经历交替的抢占位信令（ARBS），以及交替的抢占位信令模式可能是什么。这是通过在每个时隙的多个帧上累积接收的电平并且通过将每个时隙的接收电平与该时隙的平均电平进行比较来实现的。如果接收电平和平均电平之间的差异超过阈值，则确定该时隙被接受ARBS。在时隙经受ARBS的情况下，具有LSB = 0和LSB = 1的交替抢占位信令时隙的帧的DIL序列信号被分别累积（如果可用），以便为该时隙产生两个转换表（TRT0，TRT1）。在仅具有LSB = 0或具有LSB = 1的交替抢夺位信令时隙的帧中找到DIL序列的情况下，只能生成一个转换表。提供了不同的算法用于设计用于交替抢夺位信令时隙的星座，这取决于（a）是否为时隙生成了两个转换表，（b）帧到TRT对应是否已知，以及（c）生成一个转换表，生成的转换表是否为TRT0或TRT1。

10. 发明授权

US06272171B1 Robbed bit signaling identification in a PCM modem 有权
标题翻译： PCM调制解调器中的Robbed位信令标识
公开(公告)号：US06272171B1
公开(公告)日：2001-08-07
申请号：US09238302
申请日：1999-01-28
申请人： Yuri Okunev , Vitaly Drucker , Qin Wang , Yuri Goldstein
发明人： Yuri Okunev , Vitaly Drucker , Qin Wang , Yuri Goldstein
IPC分类号： H04B138
CPC分类号： H04L25/4927 , H04J3/125
摘要： Methods are provided for determining whether any slots of a modem frame are subject to robbed bit signaling (RBS), and whether the robbed bit signaling is &bgr;-codec robbed bit signaling. From an obtained DIL sequence, an ordered table of level values for each slot is generated. In determining whether any slots are RBS slots, distances between adjacent levels of the table for each slot are obtained and are compared to a “zero distance” threshold value in order to determine the number of distances which exceed the “zero distance” value. For each slot, the number of zero distances are compared to a threshold value, and if the number of zero distances exceeds the threshold value, the slot is declared to be a RBS slot. Zero distance thresholds for each slot are generated by finding a function of a maximum distance for that slot among the adjacent levels. In determining whether any RBS slots are &bgr;-codec slots, distances are found between corresponding levels of the ordered tables. If substantially more than half of the distances from one slot to the others are found to be greater than a zero distance threshold value, the slot is determined to be a &bgr;-codec slot.
摘要翻译：提供了用于确定调制解调器帧的任何时隙是否遭受抢占比特信令（RBS）以及抢占比特信令是否为β-codec抢夺比特信令的方法。从获得的DIL序列中，生成每个时隙的级别值的有序表。在确定任何时隙是否是RBS时隙时，获得每个时隙的表的相邻电平之间的距离，并将其与“零距离”阈值进行比较，以便确定超过“零距离”值的距离数。对于每个时隙，将零距离的数量与阈值进行比较，并且如果零距离的数量超过阈值，则该时隙被声明为RBS时隙。通过找到相邻级别中该时隙的最大距离的函数来生成每个时隙的零距离阈值。在确定任何RBS时隙是否为β编解码器插槽时，在有序表的相应级别之间找到距离。如果发现从一个时隙到另一个时隙的距离的大致一半大于零距离阈值，那么该时隙被确定为β-codec时隙。

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