公开(公告)号：US06895044B2

公开(公告)日：2005-05-17

申请号：US10001156

申请日：2001-11-01

Applicant: Aki Happonen ,  Olli Piirainen

Inventor： Aki Happonen ,  Olli Piirainen

IPC: H04J3/00 ,  H04B7/005 ,  H04B17/318 ,  H04L1/20 ,  H03K5/59

CPC classification number: H04L1/20 ,  H04B17/318

Abstract: The present invention proposes a method for estimating a signal variance of a received signal (y) transmitted via a transmission channel, said method comprising the steps of: estimating the energy (RSSI) of the received signal (y), estimating the energy (Emax) of channel impulse response (h) taps, and estimating said signal variance (VAR) of said received signal by subtracting said estimated energy of channel impulse response taps (Emax) from said estimated energy (RSSI) of said received signal, such that said signal variance is obtained as VAR=RSSI−Emax. The present invention also proposes a correspondingly adapted device.

Abstract translation: 本发明提出了一种用于估计经由传输信道发送的接收信号（y）的信号方差的方法，所述方法包括以下步骤：估计接收信号（y）的能量（RSSI），估计能量（Emax ），并且通过从所述接收信号的所述估计能量（RSSI）中减去所述信道脉冲响应抽头（Emax）的所述估计能量来估计所述接收信号的所述信号方差（VAR），使得所述信号脉冲响应 获得信号方差为VAR = RSSI-Emax。 本发明还提出了一种相应适应的装置。

公开(公告)号：US06654844B1

公开(公告)日：2003-11-25

申请号：US09423134

申请日：2000-02-04

Applicant: Olli Piirainen ,  Aki Happonen

Inventor： Olli Piirainen ,  Aki Happonen

IPC: G06F1300

CPC classification number: G06F13/4213

Abstract: The invention relates to a method and arrangement for connecting a processor to an ASIC. In the arrangement, the processor generates control signals employed when the processor reads data from and writes data to the ASIC. The arrangement comprises means (10) for receiving control signals from the processor and generating read and write signals on the basis of the received signals. The means (10) are implemented by an asynchronous state machine that changes its state on the basis of the received signals. The means (10) change their state without a synchronizing clock signal.

Abstract translation: 本发明涉及将处理器连接到ASIC的方法和装置。 在该布置中，处理器产生当处理器从ASIC读取数据并向ASIC写入数据时所采用的控制信号。 该装置包括用于从处理器接收控制信号并基于接收到的信号产生读取和写入信号的装置（10）。 所述装置（10）由异步状态机实现，所述异步状态机基于所接收的信号改变其状态。 装置（10）改变它们的状态而没有同步时钟信号。

公开(公告)号：US06778598B2

公开(公告)日：2004-08-17

申请号：US09846987

申请日：2001-05-01

Applicant: Aki Happonen ,  Olli Piirainen

Inventor： Aki Happonen ,  Olli Piirainen

IPC: H03H740

CPC classification number: H04L25/0212 ,  H04L25/0232

Abstract: The present invention proposes a device for processing received signals (y) having been transmitted via a transmission channel (1), comprising: estimation means (2, 2a) adapted to obtain an estimated impulse response function (hk) of said channel (1) based on said received signals (y) which are received at a first time; derivation means (3; 3a-3f) adapted to derive history information (wink) based on at least one previously estimated impulse response function, calculation means (4; 4a, 4b) adapted to calculate modifying information (mwink) on the basis of said history information (wink), and modification means (5) adapted to modify said estimated impulse response function (hk) of said channel (1) obtained on the basis of said received signals (y), by applying said modifying information (mwink) to said estimated impulse response function (hk) of said channel obtained on the basis of said received signals (y), and adapted to output a modified impulse response function (hmk). The present invention also proposes a corresponding method.

Abstract translation: 本发明提出一种用于处理经由传输信道（1）发送的接收信号（y）的装置，包括：适于获得所述信道（1）的估计脉冲响应函数（hk）的估计装置， 基于在第一次接收的所述接收信号（y）; 适于基于至少一个先前估计的脉冲响应函数导出历史信息（wink）的推导装置（3; 3a-3f），适于基于所述估计脉冲响应函数计算修改信息（mwink）的计算装置（4; 4a，4b） 历史信息（wink）和修改装置（5），适用于通过将所述修改信息（mwink）应用于所述修改信息（mwink）来修改基于所述接收信号（y）获得的所述信道（1）的所述估计脉冲响应函数（hk） 基于所述接收信号（y）获得的所述信道的估计脉冲响应函数（hk），并且适于输出修正的脉冲响应函数（hmk）。 本发明还提出了相应的方法。

公开(公告)号：US07317767B2

公开(公告)日：2008-01-08

申请号：US10490596

申请日：2002-09-27

Applicant: Aki Happonen ,  Olli Piirainen

Inventor： Aki Happonen ,  Olli Piirainen

IPC: H04L25/06

CPC classification number: H04L27/0008 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/062 ,  H04L27/2017 ,  H04L27/2067

Abstract: A method of simultaneously determining a DC offset and a channel impulse response from a received signal in a mobile communication system. The received signal comprising a set of training sequence bits that have been modulated prior to transmission. The modulated signals experience a certain phase shift and are rotated by a certain angle. The received signal may also comprise a DC offset component that needs to be removed By manipulation of the received signal samples with the knowledge of the original training sequence and method of modulation used, it is possible to simultaneously estimate the communication channel's impulse response and the DC offset by finding the Least Squares solution to a linear equation, such that the energy of the noise term introduced into the communication channel may be kept to a minimum. An improved technique utilising a priori information is also described.

Abstract translation: 一种在移动通信系统中同时确定来自接收信号的DC偏移和信道脉冲响应的方法。 所接收的信号包括在发送之前被调制的一组训练序列比特。 调制信号经历一定的相移并旋转一定角度。 接收的信号还可以包括需要去除的DC偏移分量通过使用原始训练序列和调制方法的知识来操纵接收到的信号样本，可以同时估计通信信道的脉冲响应和DC 通过找到线性方程的最小二乘解来偏移，使得引入通信信道的噪声项的能量可以保持最小。 还描述了利用先验信息的改进技术。

公开(公告)号：US06816558B2

公开(公告)日：2004-11-09

申请号：US09765492

申请日：2001-01-18

Applicant: Olli Piirainen ,  Aki Happonen

Inventor： Olli Piirainen ,  Aki Happonen

IPC: H03K900

CPC classification number: H04L25/0212

Abstract: The present invention proposes a device (1) for processing received signals transmitted via a transmission channel (4), said device comprising obtaining means (2a) adapted to obtain an estimated response function (h+e) of said transmission channel (4), based on said received signals (y); deriving means (2b) adapted to derive and estimated variance (&dgr;2) of said received signals (y); and modifying means (2c) adapted to modify said estimated response function (h+e) by applying said estimated variance (&dgr;2) to said estimated response function (h+e), thereby obtaining a modified impulse response (h). The present invention also proposes a corresponding method.

Abstract translation: 本发明提出了一种用于处理经由传输信道（4）发送的接收信号的装置（1），所述装置包括适于获得所述传输信道（4）的估计响应函数（h + e）的获取装置（2a） 基于所述接收信号（y）; 导出装置（2b），适于导出和估计所述接收信号（y）的方差（δ2）; 以及修改装置（2c），其适于通过将所述估计方差（Δ> 2）应用于所述估计响应函数（h + e）来修改所述估计响应函数（h + e），从而获得修改的脉冲响应（h）。 本发明还提出了相应的方法。

公开(公告)号：US06631160B2

公开(公告)日：2003-10-07

申请号：US09848751

申请日：2001-05-01

Applicant: Olli Piirainen ,  Aki Happonen

Inventor： Olli Piirainen ,  Aki Happonen

IPC: H03H730

CPC classification number: H04L25/0228 ,  H04L25/0212 ,  H04L25/0242

Abstract: The present invention proposes a signal processing device for processing received signals having been transmitted via a transmission channel, wherein said received signals (y) are supplied to an estimation means (2) adapted to estimated a channel impulse response function (h) of said transmission channel (1), with said estimation means being adapted to perform a Linear-Minimum-Mean-Square-Error-(LMMSE-) processing based on a training sequence (TR_SEQ) transmitted together with received samples contained in said received signals (y), and a noise and interference energy estimate represented by a noise and interference variance (&dgr;2) as well as an impulse response energy distribution estimate represented by an estimated parameter covariance matrix (Chh) for said channel (1). The present invention also proposes a corresponding method for signal processing.

Abstract translation: 本发明提出了一种用于处理已经经由传输信道发送的接收信号的信号处理装置，其中所述接收信号（y）被提供给适于估计所述传输的信道脉冲响应函数（h）的估计装置（2） 信道（1），所述估计装置适于基于与包含在所述接收信号（y）中的接收样本一起发送的训练序列（TR_SEQ）来执行线性 - 最小均方误差 - （LMMSE-）处理， 以及由噪声和干扰方差（δ<2>）表示的噪声和干扰能量估计以及由所述信道（1）的估计参数协方差矩阵（Chh）表示的脉冲响应能量分布估计。 本发明还提出了一种相应的信号处理方法。

公开(公告)号：US07920635B2

公开(公告)日：2011-04-05

申请号：US11892963

申请日：2007-08-28

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04L27/28

CPC classification number: H03F1/02 ,  H04L27/2623

Abstract: There is provided a method of clipping a transmission signal. The method comprises: providing a residual signal of a complex envelope clipper based on the transmission signal to be clipped; providing a reference signal respective to the residual signal, the reference signal corresponding to an ideal residual signal; forming a clipping signal on the basis of the residual signal and the reference signal; subtracting the clipping signal from the residual signal for removing higher amplitudes of the residual signal; and subtracting the clipping signal from the reference signal for providing a reference signal respective to the clipped residual signal.

Abstract translation: 提供了一种限制传输信号的方法。 该方法包括：基于待剪切的传输信号提供复信封限幅器的残留信号; 提供相应于残留信号的参考信号，所述参考信号对应于理想的残余信号; 基于残留信号和参考信号形成限幅信号; 从残差信号中减去削波信号，以去除残留信号的较高幅度; 以及从所述参考信号中减去所述限幅信号，以提供与所述限幅残差信号相对应的参考信号。

公开(公告)号：US07561648B2

公开(公告)日：2009-07-14

申请号：US10494207

申请日：2002-10-30

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04B1/10

CPC classification number: H04L27/2331 ,  H04L2027/0065

Abstract: There is disclosed a technique for generating an improved estimate of the frequency error in a received signal, and more particularly the application of such a technique in the equalization circuitry of a wireless network element.

Abstract translation: 公开了一种用于产生对接收信号中的频率误差的改进估计的技术，更具体地说，这种技术在无线网元的均衡电路中的应用。

公开(公告)号：US07561643B1

公开(公告)日：2009-07-14

申请号：US10111533

申请日：1999-10-27

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H03D1/04 ,  H03D1/06

CPC classification number: H04L25/0212 ,  H04L25/0228 ,  H04L25/025 ,  H04L25/062

Abstract: A method of simultaneously determining a DC offset and a channel impulse response from a received signal in a mobile communication system. The received signal Y comprising a set of training sequence bits that have been modulated prior to transmission. The modulated signals experience a certain phase shift and are rotated by a certain angle. The received signal may also comprise a DC offset component ADC that needs to be removed. By manipulation of the received signal samples with the knowledge of the original training sequence TRS and method of modulation used, it is possible to simultaneously estimate the communication channel's impulse response H and the DC offset ADC by finding the Least Square solution to a linear equation, such that the energy of the noise term introduced into the communication channel may be kept to a minimum.

Abstract translation: 一种在移动通信系统中同时确定来自接收信号的DC偏移和信道脉冲响应的方法。 接收信号Y包括在发送之前被调制的一组训练序列比特。 调制信号经历一定的相移并旋转一定角度。 所接收的信号还可以包括需要去除的DC偏移分量ADC。 通过利用原始训练序列TRS和所使用的调制方法的知识来操纵接收到的信号样本，可以通过找到线性方程的最小二乘解来同时估计通信信道的脉冲响应H和DC偏移ADC， 使得引入通信信道的噪声项的能量可以保持最小。

公开(公告)号：US07542734B2

公开(公告)日：2009-06-02

申请号：US11247324

申请日：2005-10-12

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H03C7/02 ,  H04B1/02 ,  H04B7/02 ,  H04L1/02

CPC classification number: H04B7/0697 ,  H04B7/063

Abstract: The invention provides a data transmission solution in a telecommunication system. According to the invention, a data transmission scheme is selected for a first transceiver unit, which comprises a plurality of transmit antennas, on the basis of the quality of a communication link and transmit antenna correlation information associated with the first transceiver unit, from a list including at least the following data transmission schemes: transmitting different data from each antenna of the first transceiver unit, the data transmitted from one antenna being independent of the data transmitted from another antenna; and transmitting the same data from each antenna of the first transceiver unit and controlling the direction of the transmitted data according to the properties of a radio channel. The selection of the data transmission scheme is carried out during an active communication link between the first and a second transceiver unit.

Abstract translation: 本发明提供一种电信系统中的数据传输解决方案。 根据本发明，从列表中选择基于通信链路的质量和与第一收发器单元相关联的发射天线相关信息的第一收发器单元的数据传输方案，其包括多个发射天线 至少包括以下数据传输方案：从第一收发器单元的每个天线发送不同数据，从一个天线发送的数据独立于从另一个天线发送的数据; 并且从第一收发器单元的每个天线发送相同的数据，并且根据无线电信道的属性来控制所发送的数据的方向。 在第一和第二收发器单元之间的主动通信链路期间执行数据传输方案的选择。