公开(公告)号：US06304205B1

公开(公告)日：2001-10-16

申请号：US09602639

申请日：2000-06-22

申请人： Behrooz Rezvani ,  Peter Gunadisastra

发明人： Behrooz Rezvani ,  Peter Gunadisastra

IPC分类号： H03M444

CPC分类号： H03M1/1225 ,  H03M1/145 ,  H03M1/168 ,  H03M1/44

摘要： An apparatus and method for A/D conversion is provided. The apparatus provides for multi-path multi-channel (MPMC) pipelined A/D conversion. Unlike prior art designs in which the handling of multiple channels requires a linear increase in the associated circuitry and components, the current design scales for multiple channel A/D conversion with less than linear scalability. The A/D converter comprises a plurality of stages and interfaces between adjacent columns of the stages. The stages each include an input, a first output, and a second output. Each of the stages is responsive to an input signal applied to the input to output at the first output a bit signal corresponding to at least one significant bit of the input signal and to output at the second output a residue signal corresponding to a difference between the input signal and the bit signal. The stages are arranged in columns. The interfaces are located between adjacent columns for passing residue signals from an upstream one of the adjacent columns to the inputs of a downstream one of the adjacent columns. At least one interface includes a multiplexer. The multiplexer switchably couples residue signals from at east two of the plurality of stages within the upstream one of the adjacent columns across one of the plurality of stages within the downstream one of the adjacent columns.

摘要翻译： 提供了用于A / D转换的装置和方法。 该设备提供多路径多通道（MPMC）流水线A / D转换。 不同于现有技术的设计，其中多个通道的处理需要相关联的电路和组件的线性增加，目前的设计可缩放具有小于线性可扩展性的多通道A / D转换。 A / D转换器包括多个级和相邻列之间的接口。 各级包括输入，第一输出和第二输出。 每个级都响应于施加到输入的输入信号，以在第一输出处输出与输入信号的至少一个有效位相对应的位信号，并在第二输出处输出对应于 输入信号和位信号。 这些阶段是按列排列的。 接口位于相邻列之间，用于将残留信号从相邻列中的上游一个传递到相邻列中的下游一个的输入。 至少一个接口包括多路复用器。 所述多路复用器在相邻列中的下游一个之间的多个级中的一个级别上可切换地耦合来自相邻列中的上游侧之一的多个级中的东两端的残留信号。

公开(公告)号：US10931011B2

公开(公告)日：2021-02-23

申请号：US16785489

申请日：2020-02-07

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H01Q3/08 ,  H01Q3/26 ,  H01Q19/19 ,  H01Q21/28 ,  H04N21/61 ,  H01Q21/24 ,  H01Q25/00

摘要： An antenna system comprises an antenna module, a controller, and a processor. The antenna module is capable of adopting, at any time, any one of a plurality of polarities. The controller is capable of providing a time-varying control signal to the antenna module. At a specified time, the time-varying control signal directs the antenna module to adopt a specified polarity. The processor obtains, from the antenna module, at least one digital stream in response to an incident radio-frequency (RF) signal impinging on the antenna module. At the specified time, the at least one digital stream corresponds to the antenna module having adopted the specified polarity. The processor analyzes the at least one digital stream from the antenna module, and generates an output signal corresponding to the incident RF signal.

公开(公告)号：US08111790B2

公开(公告)日：2012-02-07

申请号：US12288569

申请日：2008-10-20

申请人： Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

发明人： Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC分类号： H04B17/345

摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.

摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用值＆sgr; 2来表示估计的噪声和干扰功率，并且可以使用2来修改接收到的信号以改善噪声和干扰的影响。 ＆sgr; 2可以根据部分干扰进行调整，可以用公式表示：＆sgr; 2 =＆sgr; N2 + q＆sgr; I2，其中＆sgr; N2是“噪声功率”，＆sgr; I2是“干扰功率 ，“q是干扰校正因子。

公开(公告)号：US08064835B2

公开(公告)日：2011-11-22

申请号：US11653135

申请日：2007-01-11

申请人： Behrooz Rezvani ,  Andrea Goldsmith

发明人： Behrooz Rezvani ,  Andrea Goldsmith

IPC分类号： H04B15/00

CPC分类号： H04B7/0691 ,  H04B7/0874

摘要： This specification describes, in part, a technique for dynamic assignment of multiple antennas to different radio subsystems in a wireless device. The technique may include using an adaptive algorithm to allocate antennas to different radio subsystems as a function of, for example, application requirements, power requirements, and/or channel/network conditions. The specification also describes, in part, a technique for adaptively optimizing the use of the assigned antennas and other transmission parameters for each radio subsystem.

摘要翻译： 该规范部分地描述了用于在无线设备中将多个天线动态分配给不同无线电子系统的技术。 该技术可以包括使用自适应算法来根据例如应用需求，功率需求和/或信道/网络条件来将天线分配给不同的无线电子系统。 该规范还部分地描述了一种用于自适应地优化所分配的天线的使用和每个无线电子系统的其他传输参数的技术。

公开(公告)号：US07356049B1

公开(公告)日：2008-04-08

申请号：US10334623

申请日：2002-12-30

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H04J1/00 ,  H04L5/16

CPC分类号： H04L27/2608 ,  H04L1/0003

摘要： The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of multi-tone communications effected by opposing sets of modems coupled to one another by a plurality of subscriber lines is disclosed. The apparatus includes a spectrum manager coupled to at least one of the opposing sets of modems. The spectrum manager includes: a profiler, a demand module and an optimizer. The profiler obtains from the at least one of the opposing sets of modems the spectral characteristics of each of the plurality of subscriber lines. The demand module determines for each of the plurality of subscriber lines the subscriber demand profile. The optimizer defines target parameters for at least one of bit loading, and power spectral density (PSD) for selected tones of the multi-tone communications based on the spectral characteristics from the profile module and the demand profiles from the demand module and downloads the target parameters to the at least one of the opposing sets of modems.

摘要翻译： 本发明有利地提供了一种用于在彼此捆绑的用户线路中的诸如X-DSL的多线多音通信中的信道容量优化的方法和装置。 在本发明的一个实施例中，公开了一种用于优化由多个用户线路彼此耦合的相对的调制解调器集所影响的多音调通信的信道容量的装置。 该装置包括耦合到相对的一组调制解调器中的至少一个的频谱管理器。 频谱管理器包括：分析器，需求模块和优化器。 分析器从至少一个相对的调制解调器获得多个用户线中的每一个的频谱特性。 需求模块为多个用户线路中的每一个确定用户需求简档。 优化器基于来自简档模块的频谱特性和来自需求模块的需求简档来定义用于多音通信的所选音调的位加载和功率谱密度（PSD）中的至少一个的目标参数，并且下载目标 参数到至少一个相对的调制解调器组中。

公开(公告)号：US07092412B1

公开(公告)日：2006-08-15

申请号：US09859182

申请日：2001-05-14

申请人： Behrooz Rezvani ,  Rouben Toumani ,  Sushil Agrawal

发明人： Behrooz Rezvani ,  Rouben Toumani ,  Sushil Agrawal

IPC分类号： H04J3/04 ,  H04L12/66 ,  G01R31/08

CPC分类号： H04L27/2608 ,  H04M11/062

摘要： A method and apparatus for extending existing fiber and local area networks across digital subscriber lines, at matching data rates is disclosed. A DSL transceiver system is disclosed with one or more gateways coupled to at least one digital signal processor (DSP). The DSP in turn couples to a plurality of analog-front-ends (AFE's). Each AFE is coupled via associated hybrid front ends (HFE's) to corresponding subscriber lines. The transceiver or a controller coupled thereto maintains a table of bandwidth requirements and frame types for a variety of sessions. Individual sessions include bandwidth requirements beyond existing XDSL capabilities. The system determines frametype, e.g. 802 and bandwidth requirements, e.g. 100 Mbps for each session and allocates more than one subscriber line accordingly. For each session the divergent bandwidth availability of each of the subscriber lines to which the DSP may be coupled is determined and all or a portion of that bandwidth is allocated to the selected session. Provisioning continues until the allocated bandwidth on each subscriber line equals the session requirements. Next, a pseudo channel identifier is allocated to each physical channel. This along with a session number which is assigned to each pseudo channel allows packet based demultiplexing of a single session across a plurality of subscriber lines. A sequence for processing of pseudo channels is then assigned to all the pseudo channels within each session. This information is then communicated to the remote end and a corresponding provisioning takes place.

摘要翻译： 公开了一种用于以匹配的数据速率在数字用户线路之间扩展现有光纤和局域网的方法和装置。 公开了DSL收发器系统，其中一个或多个网关耦合到至少一个数字信号处理器（DSP）。 DSP又耦合到多个模拟前端（AFE）。 每个AFE通过相关联的混合前端（HFE）耦合到相应的用户线路。 收发器或与其耦合的控制器维护各种会话的带宽需求表和帧类型。 个别会话包括超出现有XDSL功能的带宽要求。 系统确定frametype，例如 802和带宽要求，例如 每个会话100 Mbps，并相应地分配多个用户线。 对于每个会话，确定可以耦合DSP的每个用户线路的不同带​​宽可用性，并将该带宽的全部或一部分分配给所选择的会话。 配置将持续到每个用户线上的分配带宽等于会话要求。 接下来，将伪信道标识符分配给每个物理信道。 这与分配给每个伪信道的会话号码一起允许跨多个用户线路进行基于分组的单个会话的解复用。 然后将用于处理伪信道的序列分配给每个会话内的所有伪信道。 然后将该信息传送到远程端并进行相应的配置。

公开(公告)号：US07076010B1

公开(公告)日：2006-07-11

申请号：US09876201

申请日：2001-06-06

申请人： Sam Heidari ,  Raminder S. Bajwa ,  Behrooz Rezvani ,  Dale Smith ,  Prem Ramaswamy

发明人： Sam Heidari ,  Raminder S. Bajwa ,  Behrooz Rezvani ,  Dale Smith ,  Prem Ramaswamy

IPC分类号： H03K5/01

CPC分类号： H04B3/142 ,  H04L25/0216 ,  H04L25/03038 ,  H04L25/03133 ,  H04L2025/03414 ,  H04L2025/03585

摘要： The current invention provides a method and apparatus for time domain equalization in an XDSL modem. A received communication channel is analyzed to determine the highest frequency component thereof. Typically, there is an inverse relationship between the length of a subscriber line and the highest frequency component over which communications can be supported. In response to the frequency determination, the sampling rate for the channel is reduced to the lowest sample rate consistent with maintaining signal integrity on the highest frequency component of the channel. The sampling rate reduction may accomplished in the analog portion of the receive path, e.g. the analog-to-digital converter (ADC) or in a digital decimator coupled thereto. Concurrently the demodulator complexity is also scaled back. Where the XDSL protocol is digital multi-tone (DMT) the input sample size to the discrete Fourier transform (DFT) engine is reduced accordingly. With these adjustments in place TEQ resources may be scaled inversely. Thus as line length increases and the available bandwidth on the subscriber line is reduced more TEQ resources are made available to deal with the increased delay interval over which intersymbol interference is evidenced. Scaling of TEQ resources may be accomplished using a TEQ architecture which allows either the length or the tap line or the delay between taps to be varied.

摘要翻译： 本发明提供了一种用于XDSL调制解调器中时域均衡的方法和装置。 分析接收到的通信信道以确定其最高频率分量。 通常，用户线的长度与可以支持通信的最高频率分量之间存在反比关系。 响应于频率确定，信道的采样率降低到与在信道的最高频率分量上保持信号完整性一致的最低采样率。 可以在接收路径的模拟部分中实现采样率降低，例如， 模数转换器（ADC）或与之耦合的数字抽取器。 同时，解调器的复杂度也缩小了。 在XDSL协议是数字多音调（DMT）的情况下，离散傅里叶变换（DFT）引擎的输入采样大小相应减少。 通过这些调整，TEQ资源可能会相对缩小。 因此，当线路长度增加并且用户线路上的可用带宽减少时，更多的TEQ资源可用于处理增加的符号间干扰的延迟间隔。 TEQ资源的缩放可以使用允许长度或抽头线或抽头之间的延迟进行变化的TEQ架构来实现。

公开(公告)号：US07028063B1

公开(公告)日：2006-04-11

申请号：US09698824

申请日：2000-10-26

申请人： Omprakash S. Sarmaru ,  Raminder S. Bajwa ,  Sridhar Begur ,  Avadhani Shridhar ,  Sam Heid Ari ,  Behrooz Rezvani

发明人： Omprakash S. Sarmaru ,  Raminder S. Bajwa ,  Sridhar Begur ,  Avadhani Shridhar ,  Sam Heid Ari ,  Behrooz Rezvani

IPC分类号： F06F17/14

CPC分类号： G06F17/141 ,  H04L27/2628 ,  H04L27/265

摘要： A Fourier transform processor utilizing discrete circuits each of which is configurable for processing a wide range of sample sizes. A single pipeline supports multiplexed bi-directional transformations between for example the time and frequency domains. In an embodiment of the invention the Fourier Transform processor may be implemented as part of a digital signal processor (DSP). In this embodiment the DSP may implement both the discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) across a wide range of sample sizes and X-DSL protocols. Multiple channels, each with varying ones of the X-DSL protocols can be handled in the same session.

摘要翻译： 利用离散电路的傅里叶变换处理器，每个离散电路可配置用于处理各种样本大小的范围。 单个流水线支持例如时域和频域之间的复用双向变换。 在本发明的实施例中，傅里叶变换处理器可以被实现为数字信号处理器（DSP）的一部分。 在该实施例中，DSP可以在宽范围的样本大小和X-DSL协议上实现离散傅里叶变换（DFT）和离散傅里叶逆变换（IDFT）两者。 每个具有不同的X-DSL协议的多个信道可以在同一个会话中处理。

公开(公告)号：US20190393599A1

公开(公告)日：2019-12-26

申请号：US16563917

申请日：2019-09-08

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H01Q3/08 ,  H01Q3/26 ,  H01Q21/24 ,  H01Q21/28 ,  H01Q25/00 ,  H04N21/61 ,  H01Q19/19

摘要： An antenna module, system, and method for receiving an incoming signal in a confined space are disclosed. The antenna module comprises a plurality of antenna elements and a plurality of combiners, each of the plurality of combiners coupled to a subset of the plurality of antenna elements. The system includes the antenna module, a processor, and a controller. The processor receives and analyzes outputs from the antenna module and generates an output signal corresponding to the incoming signal. The controller controls states of the antenna module, which is capable of being in any of a plurality of states to receive the incoming signal.

公开(公告)号：US10411341B2

公开(公告)日：2019-09-10

申请号：US15663613

申请日：2017-07-28

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H01Q3/08 ,  H01Q19/19 ,  H04N21/61 ,  H01Q3/26 ,  H01Q21/24 ,  H01Q21/28 ,  H01Q25/00

摘要： An indoor antenna system comprises one or more antenna modules. Each antenna module comprises an antenna array configured to receive an input signal and generate a plurality of outputs, a selector that selects a subset of the plurality of outputs, and a converter that converts the subset of the plurality of outputs into a set of digital streams. The antenna system further includes a processor that receives and analyzes outputs from the one or more antenna modules and generates an output signal corresponding to the input signal, and a controller that controls states of the one or more antenna modules. Each antenna module is configurable to be in any of a plurality of states to receive the incoming signal. The controller is configured to cause the state of each antenna module to change.