公开(公告)号：US07512868B2

公开(公告)日：2009-03-31

申请号：US10506521

申请日：2003-03-03

申请人： Alexandre Rouxel

发明人： Alexandre Rouxel

IPC分类号： H03M13/03

CPC分类号： H03M13/3955 ,  H03M13/3905 ,  H03M13/3933

摘要： The invention concerns a method for processing a signal using an approximate MAP (maximum a posteriori) algorithm for determining a likelihood ratio ΛkX of a set of states X of a lattice at a time k, with each of said states being associated at least one intermediate variable belonging to a group comprising a so-called forward variable and a so-called backward variable, propagated by said MAP algorithm and recursively calculated respectively in a direct orientation and in an indirect orientation at said time k relative to said lattice. The invention is characterized in that said process comprises a step which consists in reducing the number of selected states by said MAP algorithm so as to calculate said likelihood ratio, and, for at least some unselected states, in assigning to said forward variable and/or said backward variable at least one specific value, to calculate an approximate likelihood ratio.

摘要翻译： 本发明涉及一种使用近似MAP（最大后验）算法来处理信号的方法，用于确定在时间k的格子状态集合的似然比LambdakX，其中每个状态与至少一个中间 属于包括所谓的前向变量和所谓的后向变量的组的变量，由所述MAP算法传播并且相对于所述格子在所述时间k处以直接取向和间接取向分别递归计算。 本发明的特征在于所述方法包括一个步骤，该步骤包括通过所述MAP算法减少所选状态的数量，以便计算所述似然比，并且对于至少一些未选择的状态，在分配给所述前向变量和/或 所述向后变量至少具有一个特定值，以计算近似似然比。

公开(公告)号：US20050198551A1

公开(公告)日：2005-09-08

申请号：US10506521

申请日：2003-03-03

申请人： Alexandre Rouxel

发明人： Alexandre Rouxel

IPC分类号： H03M13/29 ,  H03M13/41 ,  H03M13/45 ,  G06F11/00

CPC分类号： H03M13/3955 ,  H03M13/3905 ,  H03M13/3933

摘要： The invention concerns a method for processing a signal using an approximate MAP (maximum a posteriori) algorithm for determining a likelihood ratio ΛkX of a set of states X of a lattice at a time k, with each of said states being associated at least one intermediate variable belonging to a group comprising a so-called forward variable and a so-called backward variable, propagated by said MAP algorithm and recursively calculated respectively in a direct orientation and in an indirect orientation at said time k relative to said lattice. The invention is characterized in that said process comprises a step which consists in reducing the number of selected states by said MAP algorithm so as to calculate said likelihood ratio, and, for at least some unselected states, in assigning to said forward variable and/or said backward variable at least one specific value, to calculate an approximate likelihood ratio.

摘要翻译： 本发明涉及一种使用近似MAP（最大后验）算法来处理信号的方法，用于确定格子状态集合的似然比λX SUP 在时间k，每个所述状态被关联至少一个属于包括所谓的前向变量和所谓的后向变量的组的中间变量，由所述MAP算法传播并分别以直接方向递归计算， 在所述时间k处相对于所述晶格的间接取向。 本发明的特征在于所述方法包括一个步骤，该步骤包括通过所述MAP算法减少所选状态的数量，以便计算所述似然比，并且对于至少一些未选择的状态，在分配给所述前向变量和/或 所述向后变量至少具有一个特定值，以计算近似似然比。

公开(公告)号：US08023557B2

公开(公告)日：2011-09-20

申请号：US11968105

申请日：2007-12-31

申请人： Nicolas Constantinidis ,  Guillaume Crinon ,  Alexandre Rouxel ,  Alan Westwick ,  Gary Franzosa ,  Didier Gallais ,  Marty Lynn Pflum

发明人： Nicolas Constantinidis ,  Guillaume Crinon ,  Alexandre Rouxel ,  Alan Westwick ,  Gary Franzosa ,  Didier Gallais ,  Marty Lynn Pflum

IPC分类号： H04B1/38 ,  H04B1/16 ,  H04L23/00

CPC分类号： H04W52/028 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

摘要： A method is disclosed for controlling the operation of a low power radio platform that realizes the physical layer (PHY) with a software portion and an analog front end, the analog front end disposed between the DSP and an antenna, and realizes the MAC layer with a microcontroller unit (MCU). The DSP, analog front end and MCU are maintained in a low power mode of operation when not in data communication. When data communication is initiated, a hardware controller controls at least one hardware interface disposed between the DSP and the analog front end to initiate multiple time based tasks to transfer data to and from a buffer. During the execution of these tasks, the controller causes a task in the DSP to be initiated for processing of data in the buffers and, upon completion of at least one of the tasks, notifying the MCU of such. The controller controls the hardware interface to terminate operation when predetermined time based events have occurred. The MCU in at least one mode of operation thereof is operable to initiate the operation of the hardware controller and then convert to a low power mode of operation to await notification.

摘要翻译： 公开了一种用于控制利用软件部分和模拟前端实现物理层（PHY）的低功率无线电平台的操作的方法，模拟前端设置在DSP和天线之间，并且实现MAC层与 微控制器单元（MCU）。 DSP，模拟前端和MCU在不进行数据通信时，都处于低功耗操作模式。 当数据通信发起时，硬件控制器控制至少一个配置在DSP和模拟前端之间的硬件接口，以启动多个基于时间的任务，以将数据传送到缓冲器和从缓冲器传输数据。 在执行这些任务期间，控制器使得DSP中的任务被启动以处理缓冲器中的数据，并且在完成至少一个任务时通知MCU。 当发生预定的基于时间的事件时，控制器控制硬件接口终止操作。 MCU中的至少一种操作模式可操作以启动硬件控制器的操作，然后转换为低功率操作模式以等待通知。

公开(公告)号：US20090168849A1

公开(公告)日：2009-07-02

申请号：US12060256

申请日：2008-03-31

申请人： ALEXANDRE ROUXEL

发明人： ALEXANDRE ROUXEL

IPC分类号： H04B1/707

CPC分类号： H04J13/00 ,  H04B1/707 ,  H04B2201/70709 ,  H04L27/2278

摘要： A single chip radio platform is disclosed for communicating with an RF channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.

摘要翻译： 公开了用于与RF信道通信的单芯片无线电平台。 提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。 提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据， 由射频前端传输。 提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。 提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考 时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟都具有稳定的第一个固定时钟。 提供了周期性电源管理电路，用于控制无线电平台在睡眠中操作的操作。

公开(公告)号：US20090168848A1

公开(公告)日：2009-07-02

申请号：US11968113

申请日：2007-12-31

申请人： Nicolas CONSTANTINIDIS ,  Guillaume CRINON ,  Alexandre ROUXEL ,  Alan WESTWICK ,  Gary FRANZOSA

发明人： Nicolas CONSTANTINIDIS ,  Guillaume CRINON ,  Alexandre ROUXEL ,  Alan WESTWICK ,  Gary FRANZOSA

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/69 ,  H04B2201/70709

摘要： A single chip radio platform is disclosed for communicating with an RE channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.

摘要翻译： 公开了用于与RE信道通信的单芯片无线电平台。 提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。 提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据， 由射频前端传输。 提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。 提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考 时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟都具有稳定的第一个固定时钟。 提供定期功率管理电路用于控制无线电平台在睡眠中操作的操作。

公开(公告)号：US07991047B2

公开(公告)日：2011-08-02

申请号：US11659242

申请日：2005-06-17

申请人： Eric Coupain ,  Alexandre Rouxel

发明人： Eric Coupain ,  Alexandre Rouxel

IPC分类号： H03H7/30 ,  H03D1/04 ,  H04B7/212

CPC分类号： H04L25/03006 ,  H04L25/03993

摘要： A method is provided for designing a digital reception filter for a wanted signal. The method includes modeling at least one transmission channel of at least one signal interfering with said wanted signal in such a way that the pattern of an interfering channel is obtainable, in bleaching said at least one interfering signal by a bleaching filter taking into consideration said interfering channel pattern and a noise thereon (pattern noise) and in calculating the coefficients of said digital reception filter using at least one coefficient of the bleaching filter.

摘要翻译： 提供了一种用于设计有用信号的数字接收滤波器的方法。 该方法包括以干扰信道的至少一个信号的至少一个传输信道建模干扰信道的模式，在漂白所述至少一个干扰信号时，考虑到所述干扰 通道图案和其上的噪声（图案噪声），并且使用漂白滤波器的至少一个系数来计算所述数字接收滤波器的系数。

公开(公告)号：US20070281640A1

公开(公告)日：2007-12-06

申请号：US11659242

申请日：2005-06-17

申请人： Eric Coupain ,  Alexandre Rouxel

发明人： Eric Coupain ,  Alexandre Rouxel

IPC分类号： H04B1/00

CPC分类号： H04L25/03006 ,  H04L25/03993

摘要： The invention relates to a method for designing a digital reception filter for a main signal. According to the invention, such a method includes the steps of: modelling at least one channel for transmission of at least one signal interfering with said main signal, so as to obtain an interfering channel model; whitening of said at least one interfering signal, by means of a whitening filter taking into account said interfering channel model and a noise on said model, referred to as a model noise; calculating coefficients of said digital receiving filter on the basis of least one coefficient of said whitening filter.

摘要翻译： 本发明涉及一种用于设计主信号的数字接收滤波器的方法。 根据本发明，这种方法包括以下步骤：对至少一个信道进行建模以传输干扰所述主信号的至少一个信号，以获得干扰信道模型; 通过考虑所述干扰信道模型的白化滤波器和被称为模型噪声的所述模型上的噪声，对所述至少一个干扰信号进行白化; 基于所述白化滤波器的至少一个系数来计算所述数字接收滤波器的系数。

公开(公告)号：US07242721B2

公开(公告)日：2007-07-10

申请号：US10479190

申请日：2002-05-15

申请人： Michel Alard ,  Alexandre Rouxel ,  Nathalie Goudard ,  Franck Bietrix

发明人： Michel Alard ,  Alexandre Rouxel ,  Nathalie Goudard ,  Franck Bietrix

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/0232 ,  H04L25/0248 ,  H04L27/2647

摘要： The invention concerns a method for estimating the transfer function of a multicarrier signal transmission channel consisting of a temporal succession of symbols of a set of data elements, each of the data elements modulating a carrier frequency of the signal, the data elements comprising pilots and so-called informative data elements. The invention is characterized in that said method comprises: a step which consists in determining a set of two-dimensional discrete prolate spheroidal sequences (DPSS); a step which consists in writing the transfer function in the form of a combination of at least some of the two-dimensional discrete prolate spheroidal sequences (DPSS); a step which consists in time-based and frequency-based two-dimensional interpolation of at least some of the coefficients of the combination, so as to obtain an estimation of the transfer function at any point of a time-frequency network.

摘要翻译： 本发明涉及一种用于估计由一组数据元素的时间序列符号组成的多载波信号传输信道的传递函数的方法，每个数据元素调制信号的载波频率，包括导频等的数据元素 所提供的信息数据元素。 本发明的特征在于所述方法包括：确定一组二维离散长椭球序列（DPSS）的步骤。 包括以至少一些二维离散长椭球序列（DPSS）的组合的形式书写传递函数的步骤; 包括组合中的至少一些系数的基于时间和频率的二维插值的步骤，以获得在时间频率网络的任何点处的传递函数的估计。

公开(公告)号：US08223820B2

公开(公告)日：2012-07-17

申请号：US12060256

申请日：2008-03-31

申请人： Alexandre Rouxel

发明人： Alexandre Rouxel

IPC分类号： H04B1/69 ,  H04B7/216 ,  H04L27/06

CPC分类号： H04J13/00 ,  H04B1/707 ,  H04B2201/70709 ,  H04L27/2278

摘要： A technique for receiving a data stream including a spreading sequence packet of information containing a data payload and, in addition to the data payload, packet overhead including at least periodic information and at least one unique section of known coded information that defines a unique position within the packet, includes performing a plurality of processing steps to detect the position of the unique section within the packet of information. The steps include detecting the periodicity of the periodic information in a first processing step; in a second processing step after periodicity in the received data stream has been determined, estimating the position of the unique section within the packet of information; and in a third processing step, correlating the information in the packet of information about the estimated position with the known coded information.

摘要翻译： 一种用于接收数据流的技术，包括包含数据有效载荷的信息的扩展序列分组，并且除了数据有效载荷之外，包括至少周期性信息的分组开销和至少一个已知编码信息的唯一部分，该唯一部分定义了在 分组包括执行多个处理步骤以检测信息分组内的唯一部分的位置。 这些步骤包括在第一处理步骤中检测周期性信息的周期; 在接收到的数据流的周期性已被确定之后的第二处理步骤中，估计信息包内的唯一部分的位置; 并且在第三处理步骤中，将关于估计位置的信息分组中的信息与已知编码信息相关联。

公开(公告)号：US08050313B2

公开(公告)日：2011-11-01

申请号：US11968113

申请日：2007-12-31

申请人： Nicolas Constantinidis ,  Guillaume Crinon ,  Alexandre Rouxel ,  Alan Westwick ,  Gary Franzosa

发明人： Nicolas Constantinidis ,  Guillaume Crinon ,  Alexandre Rouxel ,  Alan Westwick ,  Gary Franzosa

IPC分类号： H04B1/38 ,  H04B1/16

CPC分类号： H04B1/707 ,  H04B1/69 ,  H04B2201/70709

摘要： A single chip radio platform is disclosed for communicating with an RF channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.

摘要翻译： 公开了用于与RF信道通信的单芯片无线电平台。 提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。 提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据， 由射频前端传输。 提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。 提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考 时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟均具有第一个固定时钟的稳定性。 提供了周期性电源管理电路，用于控制无线电平台在睡眠中操作的操作。