公开(公告)号：US20090207746A1

公开(公告)日：2009-08-20

申请号：US12242569

申请日：2008-09-30

申请人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

发明人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

IPC分类号： H04L12/26

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. Thermal noise in a sideband may be measured and used as an estimate of thermal noise in a signal band. In one design, samples containing a desired signal centered at DC or a frequency higher than DC may be partitioned into blocks of K samples. Each block of K samples may be transformed with an FFT to obtain a corresponding block of K transform coefficients for K frequency bins. The power of transform coefficients for frequency bins in the sideband may be computed. Thermal noise may be estimated based on power values for the frequency bins in the sideband. Power values for frequency bins in the signal band may also be obtained and used to estimate total received power. RoT may then be estimated based on the estimated thermal noise and the estimated total received power.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 可以测量边带中的热噪声并将其用作信号频带中的热噪声的估计。 在一种设计中，包含以DC或高于DC的频率为中心的期望信号的样本可被划分为K个样本的块。 可以用FFT对K个采样的每个块进行变换，以获得用于K个频率仓的K个变换系数的相应块。 可以计算边带中频率仓的变换系数的幂。 可以基于边带中的频率仓的功率值来估计热噪声。 也可以获得信号频带中的频率仓的功率值并用于估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。

公开(公告)号：US08320373B2

公开(公告)日：2012-11-27

申请号：US12194447

申请日：2008-08-19

申请人： Mehraban Iraninejad ,  Jeff Levin ,  Michael-David N. Canoy ,  Michael Alexander Howard ,  Noam A. Ziv ,  Rohan Sudhakar Salvi

发明人： Mehraban Iraninejad ,  Jeff Levin ,  Michael-David N. Canoy ,  Michael Alexander Howard ,  Noam A. Ziv ,  Rohan Sudhakar Salvi

IPC分类号： H04L12/56

CPC分类号： H04W24/02 ,  H04L49/90 ,  H04L69/22 ,  H04W88/02 ,  H04W88/08

摘要： A packet-based processing system suitable for various applications, such as for a base station or a terminal in a wireless communication system, is described. The packet-based processing system may include multiple processing modules and at least one transport module. The processing modules may send packets to one another via a common packet interface and may operate asynchronously. The transport module(s) may forward the packets sent by the processing modules and may operate asynchronously with respect to the processing modules. Each processing module may include a network interface, at least one buffer, a packet parser, a packet builder, and at least one processing unit. Each processing module may support at least one service. Each packet may include a header and a payload. The header may include a source service address for a source service sending the packet and a destination service address for a recipient service receiving the packet.

摘要翻译： 描述适用于各种应用的基于分组的处理系统，诸如用于无线通信系统中的基站或终端。 基于分组的处理系统可以包括多个处理模块和至少一个传输模块。 处理模块可以通过公共分组接口彼此发送分组，并且可以异步地操作。 传输模块可以转发由处理模块发送的分组，并且可以相对于处理模块异步地操作。 每个处理模块可以包括网络接口，至少一个缓冲器，分组解析器，分组构建器和至少一个处理单元。 每个处理模块可以支持至少一个服务。 每个分组可以包括报头和有效载荷。 报头可以包括用于发送分组的源服务的源服务地址和接收分组的接收方服务的目的地服务地址。

公开(公告)号：US06519237B1

公开(公告)日：2003-02-11

申请号：US09321680

申请日：1999-05-28

申请人： John McDonough ,  Mehraban Iraninejad

发明人： John McDonough ,  Mehraban Iraninejad

IPC分类号： H04B7216

CPC分类号： H04B1/708 ,  H04B2201/70701

摘要： A method to expediently perform search/correlation operation between an internal pilot pseudonoise (PN) sequence and an incoming pilot PN sequence. This operation is used to acquire base stations in a Code Division Multiple Access (CDMA) system. In one embodiment, the present invention recites a method comprising several steps. First, a plurality of PN sequence values are provided internally and an input signal sample is received. The input signal sample is correlated, in parallel, with the plurality of PN sequence values. The correlation operation is performed at a rate equivalent to the input sample rate times the number of PN sequence values being correlated in parallel, assuming a resolution of one. The resultant products are respectively summed and stored in a plurality of accumulators.

摘要翻译： 一种方便地在内部导频伪噪声（PN）序列和输入导频PN序列之间执行搜索/相关操作的方法。 该操作用于在码分多址（CDMA）系统中采集基站。 在一个实施方案中，本发明描述了包括几个步骤的方法。 首先，在内部提供多个PN序列值，并接收输入信号样本。 输入信号样本与多个PN序列值并行地相关。 假设分辨率为1，以与输入采样率相等的速率乘以相关联的PN序列值的数量进行相关运算。 所得产物分别相加并存储在多个蓄电池中。

公开(公告)号：US08264975B2

公开(公告)日：2012-09-11

申请号：US12242569

申请日：2008-09-30

申请人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

发明人： Lu Yuan ,  Danlu Zhang ,  Mehraban Iraninejad ,  Sharad Sambhwani

IPC分类号： H04L12/26 ,  H04J11/00

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. Thermal noise in a sideband may be measured and used as an estimate of thermal noise in a signal band. In one design, samples containing a desired signal centered at DC or a frequency higher than DC may be partitioned into blocks of K samples. Each block of K samples may be transformed with an FFT to obtain a corresponding block of K transform coefficients for K frequency bins. The power of transform coefficients for frequency bins in the sideband may be computed. Thermal noise may be estimated based on power values for the frequency bins in the sideband. Power values for frequency bins in the signal band may also be obtained and used to estimate total received power. RoT may then be estimated based on the estimated thermal noise and the estimated total received power.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 可以测量边带中的热噪声并将其用作信号频带中的热噪声的估计。 在一种设计中，包含以DC或高于DC的频率为中心的期望信号的样本可被划分为K个样本的块。 可以用FFT对K个采样的每个块进行变换，以获得用于K个频率仓的K个变换系数的相应块。 可以计算边带中频率仓的变换系数的幂。 可以基于边带中的频率仓的功率值来估计热噪声。 也可以获得信号频带中的频率仓的功率值并用于估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。

公开(公告)号：US08254279B2

公开(公告)日：2012-08-28

申请号：US12107013

申请日：2008-04-21

申请人： Charles E. Wheatley, III ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

发明人： Charles E. Wheatley, III ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

IPC分类号： H04J3/14 ,  H04W4/00

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. In an aspect, thermal noise in a sideband may be measured and used to estimate thermal noise in a signal band. In one design, received power in the sideband may be measured, e.g., by computing total power of FFT transform coefficients within the sideband. Thermal noise may be estimated based on (e.g., by filtering) the measured received power in the sideband. Received power in the signal band may also be measured. Total received power may be estimated based on (e.g., by filtering) the measured received power in the signal band. RoT may then be estimated based on the estimated thermal noise and the estimated total received power. The estimated RoT may be used to estimate an available load for a cell, which may be used to admit and/or schedule users in the cell.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 在一方面，边带中的热噪声可以被测量并用于估计信号频带中的热噪声。 在一种设计中，边带中的接收功率可以例如通过计算边带内的FFT变换系数的总功率来测量。 可以基于（例如，通过滤波）边带中的测量的接收功率来估计热噪声。 也可以测量信号频带中的接收功率。 可以基于（例如，通过滤波）在信号频带中测量的接收功率来估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。 估计的RoT可以用于估计小区的可用负载，其可以用于接纳和/或调度小区中的用户。

公开(公告)号：US20100158161A1

公开(公告)日：2010-06-24

申请号：US12487117

申请日：2009-06-18

申请人： Sharad D. Sambhwani ,  Wei Zeng ,  Wei Zhang ,  Jan Krzys Wegrzyn ,  Mehraban Iraninejad

发明人： Sharad D. Sambhwani ,  Wei Zeng ,  Wei Zhang ,  Jan Krzys Wegrzyn ,  Mehraban Iraninejad

IPC分类号： H04B1/10 ,  H03M13/00 ,  H04L27/06 ,  G06F11/10

CPC分类号： H03M13/6306 ,  H03M13/2957 ,  H03M13/2975 ,  H03M13/3776 ,  H03M13/6331 ,  H03M13/6525 ,  H03M13/653 ,  H03M13/6577 ,  H04B1/7107 ,  H04B2001/71077 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/1829

摘要： The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.

摘要翻译： 本专利申请公开了一种用于解码的方法和装置，包括迭代地解码信号，相互交换外在信息，计算系统和奇偶校验位的APP LLR，并且在基于累积的软信息完成多次迭代之后进行硬判决。 本专利申请还公开了一种用于后解码软干扰消除的方法和装置，包括从turbo解码器生成用于系统和奇偶校验位的更新的后验概率，将后验概率映射到软符号，量化软符号，重新编码 数据分组，滤波芯片序列，重建干扰波形，以及使用符号缩放重建滤波器系数。

公开(公告)号：US20080267086A1

公开(公告)日：2008-10-30

申请号：US12107013

申请日：2008-04-21

申请人： Charles E. Wheatley ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

发明人： Charles E. Wheatley ,  Avneesh Agrawal ,  Danlu Zhang ,  Sharad Deepak Sambhwani ,  Lu Yuan ,  Mehraban Iraninejad

IPC分类号： H04L12/26

CPC分类号： H04B17/382 ,  H04B17/345

摘要： Techniques for estimating thermal noise and rise-over-thermal (RoT) in a communication system are described. In an aspect, thermal noise in a sideband may be measured and used to estimate thermal noise in a signal band. In one design, received power in the sideband may be measured, e.g., by computing total power of FFT transform coefficients within the sideband. Thermal noise may be estimated based on (e.g., by filtering) the measured received power in the sideband. Received power in the signal band may also be measured. Total received power may be estimated based on (e.g., by filtering) the measured received power in the signal band. RoT may then be estimated based on the estimated thermal noise and the estimated total received power. The estimated RoT may be used to estimate an available load for a cell, which may be used to admit and/or schedule users in the cell.

摘要翻译： 描述了用于估计通信系统中的热噪声和上升热（RoT）的技术。 在一方面，边带中的热噪声可以被测量并用于估计信号频带中的热噪声。 在一种设计中，边带中的接收功率可以例如通过计算边带内的FFT变换系数的总功率来测量。 可以基于（例如，通过滤波）边带中的测量的接收功率来估计热噪声。 也可以测量信号频带中的接收功率。 可以基于（例如，通过滤波）在信号频带中测量的接收功率来估计总接收功率。 然后可以基于估计的热噪声和估计的总接收功率来估计RoT。 估计的RoT可以用于估计小区的可用负载，其可以用于接纳和/或调度小区中的用户。

公开(公告)号：US07333614B2

公开(公告)日：2008-02-19

申请号：US09991506

申请日：2001-11-16

申请人： Tad Jarosinski ,  Daniel H. Agre ,  Stephen S. Carter ,  Mehraban Iraninejad ,  Joseph P. Odenwalder ,  Roy Franklin Quick ,  Charles E. Wheatley

发明人： Tad Jarosinski ,  Daniel H. Agre ,  Stephen S. Carter ,  Mehraban Iraninejad ,  Joseph P. Odenwalder ,  Roy Franklin Quick ,  Charles E. Wheatley

IPC分类号： H04N7/167

CPC分类号： H04J13/0022 ,  H04B1/707 ,  H04L9/0656 ,  H04L2209/34 ,  H04L2209/80

摘要： A system and method for encrypting all channels of a wireless spread spectrum communication at the chip level. The PN sequence is encrypted with one or more encryption sequences and then used to spread the signal.

摘要翻译： 一种用于在芯片级加密无线扩频通信的所有信道的系统和方法。 PN序列用一个或多个加密序列加密，然后用于扩展信号。

公开(公告)号：US08254502B2

公开(公告)日：2012-08-28

申请号：US12487117

申请日：2009-06-18

申请人： Sharad D. Sambhwani ,  Wei Zeng ,  Wei Zhang ,  Jan K Wegrzyn ,  Mehraban Iraninejad

发明人： Sharad D. Sambhwani ,  Wei Zeng ,  Wei Zhang ,  Jan K Wegrzyn ,  Mehraban Iraninejad

IPC分类号： H04L27/06

CPC分类号： H03M13/6306 ,  H03M13/2957 ,  H03M13/2975 ,  H03M13/3776 ,  H03M13/6331 ,  H03M13/6525 ,  H03M13/653 ,  H03M13/6577 ,  H04B1/7107 ,  H04B2001/71077 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/1829

摘要： The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.

摘要翻译： 本专利申请公开了一种用于解码的方法和装置，包括迭代地解码信号，相互交换外在信息，计算系统和奇偶校验位的APP LLR，并且在基于累积的软信息完成多次迭代之后进行硬判决。 本专利申请还公开了一种用于后解码软干扰消除的方法和装置，包括从turbo解码器生成用于系统和奇偶校验位的更新的后验概率，将后验概率映射到软符号，量化软符号，重新编码 数据分组，滤波芯片序列，重建干扰波形，以及使用符号缩放重建滤波器系数。

公开(公告)号：US20090080429A1

公开(公告)日：2009-03-26

申请号：US12194447

申请日：2008-08-19

申请人： Mehraban Iraninejad ,  Jeff Levin ,  Michael-David N. Canoy ,  Michael Alexander Howard ,  Noam A. Ziv ,  Rohan Sudhakar Salvi

发明人： Mehraban Iraninejad ,  Jeff Levin ,  Michael-David N. Canoy ,  Michael Alexander Howard ,  Noam A. Ziv ,  Rohan Sudhakar Salvi

IPC分类号： H04L12/56

CPC分类号： H04W24/02 ,  H04L49/90 ,  H04L69/22 ,  H04W88/02 ,  H04W88/08

摘要： A packet-based processing system suitable for various applications, such as for a base station or a terminal in a wireless communication system, is described. The packet-based processing system may include multiple processing modules and at least one transport module. The processing modules may send packets to one another via a common packet interface and may operate asynchronously. The transport module(s) may forward the packets sent by the processing modules and may operate asynchronously with respect to the processing modules. Each processing module may include a network interface, at least one buffer, a packet parser, a packet builder, and at least one processing unit. Each processing module may support at least one service. Each packet may include a header and a payload. The header may include a source service address for a source service sending the packet and a destination service address for a recipient service receiving the packet.

摘要翻译： 描述适用于各种应用的基于分组的处理系统，诸如用于无线通信系统中的基站或终端。 基于分组的处理系统可以包括多个处理模块和至少一个传输模块。 处理模块可以通过公共分组接口彼此发送分组，并且可以异步地操作。 传输模块可以转发由处理模块发送的分组，并且可以相对于处理模块异步地操作。 每个处理模块可以包括网络接口，至少一个缓冲器，分组解析器，分组构建器和至少一个处理单元。 每个处理模块可以支持至少一个服务。 每个分组可以包括报头和有效载荷。 报头可以包括用于发送分组的源服务的源服务地址和接收分组的接收方服务的目的地服务地址。