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：US06643675B2

公开(公告)日：2003-11-04

申请号：US10187443

申请日：2002-07-02

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: G06F1717

CPC classification number: H03H17/0288 ,  H03H17/0671

Abstract: The invention relates to a filtering method and a filter implementing the filtering method. In the solution, a signal is filtered by at least one real FIR filter having at least one stop frequency pair whose different frequencies are symmetrically on different sides of at least one alias frequency.

Abstract translation: 本发明涉及一种实现滤波方法的滤波方法和滤波器。 在该解决方案中，信号被至少一个具有至少一个停止频率对的实际FIR滤波器滤波，其中不同频率对称地在至少一个别名频率的不同侧上。

公开(公告)号：US06526102B1

公开(公告)日：2003-02-25

申请号：US09284121

申请日：1999-04-28

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04K102

CPC classification number: H04W52/343 ,  H04W52/346

Abstract: The invention relates to a method of optimizing transmission, and a transmitter receiving digital signals, in which the transmitter is used in a radio system to optimally transmit the signals. The transmitter includes modulation means arranged to modulate the received signals, and converter means for converting the digital signal into an analog signal before signal transmission. The position of the signal received by the converter means within the dynamic range of the converter means affects optimality of the signal obtained from the conversion. The transmitter further include means for generating weighting coefficients, and means for weighting each modulated signal by a specific weighting coefficient so as to set the mutual power levels of the signals into predetermined relations and to optimally dispose the signals within the dynamic range of the converter means. In addition, the transmitter includes means for combining the weighted signals, after which the converter means converts the combined signal into an analog signal, and means for scaling the signal converted into the analog signal into a predetermined power level.

Abstract translation: 本发明涉及一种优化传输的方法，以及接收数字信号的发射机，其中发射机用于无线电系统以最佳地传输信号。 发射机包括调制装置，用于调制接收的信号;以及转换器装置，用于在信号传输之前将数字信号转换为模拟信号。 在转换器装置的动态范围内由转换器装置接收的信号的位置影响从转换获得的信号的最优性。 发射机还包括用于产生加权系数的装置，以及用于通过特定加权系数对每个调制信号进行加权的装置，以便将信号的相互功率电平设置成预定关系并且最佳地将该信号置于转换器装置的动态范围内 。 此外，发射机包括用于组合加权信号的装置，之后转换器装置将组合信号转换为模拟信号，以及用于将转换成模拟信号的信号缩放为预定功率电平的装置。

公开(公告)号：US06473016B2

公开(公告)日：2002-10-29

申请号：US09851429

申请日：2001-05-09

Applicant: Olli Piirainen ,  Markku Tirkkonen

Inventor： Olli Piirainen ,  Markku Tirkkonen

IPC: H03M162

CPC classification number: H03G3/3078 ,  H03G1/0088 ,  H03M1/185

Abstract: The invention relates to a method and an apparatus for implementing automatic gain control in a system where an analog signal is converted into a digital signal. The apparatus comprises means (208) for performing automatic gain control of the adjustable signal in an analog manner using a gain control step of predetermined size and means (446, 448) for performing inverse gain control of the digitized signal in such a way that, after the digital adjustment, the power of the signal is the same as before the analog adjustment. To enable an accurate gain control, the apparatus further comprises means (410, 412, 214, 420) for determining the maximum energy of the signal during a predetermined measurement period, means (426, 428) for comparing the determined maximum energy to preset threshold values (430, 432), and means (436) for performing an automatic gain control of the analog signal and a compensation for the gain control to the digital signal, if the measured value exceeds the threshold.

Abstract translation: 本发明涉及一种在将模拟信号转换为数字信号的系统中实现自动增益控制的方法和装置。 该装置包括用于使用预定尺寸的增益控制步骤以模拟方式执行可调节信号的自动增益控制的装置（208）和用于以这样的方式执行数字化信号的逆增益控制的装置（446,448） 数字调节后，信号的功率与模拟调整前相同。 为了实现精确的增益控制，装置还包括用于在预定测量周期内确定信号的最大能量的装置（410,412,214,420），用于将确定的最大能量与预设阈值进行比较的装置（426,428） 值（430,432）和用于执行模拟信号的自动增益控制的装置（436）以及对数字信号的增益控制的补偿，如果测量值超过阈值。

公开(公告)号：US06327315B1

公开(公告)日：2001-12-04

申请号：US09194040

申请日：1998-11-20

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04L2738

CPC classification number: H04L25/0212 ,  H04L25/0202 ,  H04L25/0236 ,  H04L25/025

Abstract: A method for estimating an impulse response and a receiver in a radio system where the signal to be sent comprises a known training sequence, which receiver comprises means for sampling the received signal, and means for calculating a first estimate for the impulse response by means of the known training sequence. To enable an accurate determination of impulse response, the receiver comprises means for making preliminary decisions of the received samples by means of the first impulse response estimate, means for calculating an error value of the estimated samples and the received samples calculated by means of the preliminary decisions, means for calculating a second estimate of the impulse response by minimizing said error value, and means for calculating a new estimate for the impulse response by combining the first and second estimates to one another.

Abstract translation: 一种在无线电系统中估计脉冲响应的方法和接收机，其中要发送的信号包括已知训练序列，该接收机包括用于对接收到的信号进行采样的装置，以及用于通过以下步骤计算脉冲响应的第一估计的装置： 已知的训练序列。 为了能够准确地确定脉冲响应，接收机包括用于通过第一脉冲响应估计对接收到的采样进行初步判定的装置，用于计算估计采样的误差值的装置和通过初步计算的接收样本 决定，用于通过使所述误差值最小来计算脉冲响应的第二估计的装置，以及用于通过将第一和第二估计相互组合来计算脉冲响应的新估计的装置。

公开(公告)号：US06173302B2

公开(公告)日：2001-01-09

申请号：US09117318

申请日：1998-07-27

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: G06F1717

CPC classification number: H03H17/0671 ,  H03H17/0621

Abstract: The invention relates to a decimation method and a decimation filter, which provide the transfer function of a CIC decimation filter. Decimation of the number of order N is performed by coefficient M, whereby FIR filtering is carried out in the main branch (100) of the decimation filter by M-tap FIR filters (20) N times in sequence, decimation is carried out by decimation means (21) by coefficient M and comb-filtering is carried out by means (22) N−1 times. The effect of sample cycles M preceding the sample cycle M to be processed is taken into account by using side branches (101, 102, 104) and additional branches (103, 105, 106, 107).

Abstract translation: 本发明涉及提供CIC抽取滤波器的传递函数的抽取方法和抽取滤波器。 通过系数M执行N次数的抽取，由此通过M抽头FIR滤波器（20）在抽头滤波器的主分支（100）中依次执行FIR滤波，次序N次抽取，通过抽取进行抽取 通过系数M的装置（21），并且通过（22）N-1次进行梳状滤波。 通过使用侧分支（101,102,104）和附加分支（103,105,106,107）来考虑在待处理的采样周期M之前的采样周期M的影响。

公开(公告)号：US6075830A

公开(公告)日：2000-06-13

申请号：US973276

申请日：1997-11-28

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: G06F13/42 ,  G06F13/40 ,  H04L7/00 ,  G06F13/00 ,  G06F13/14 ,  G06F13/28

CPC classification number: G06F13/405

Abstract: Many digital processors have an asynchronous bus controlled by two control signals. To interface a synchronous memory to an asynchronous bus, interface logic is required. In an interface for transferring data from an asynchronous circuit to a synchronous circuit, data to be written are written in an intermediate register while timing control signals are being synchronized to a system clock by means of flip-flops. Correspondingly, in an interface for transferring data from the synchronous circuit to the asynchronous circuit, a signal indicating a read transaction from the synchronous circuit is synchronized to the system clock by means of a flip-flop circuit.

Abstract translation: PCT No.PCT / FI96 / 00285 Sec。 371日期1997年11月28日 102（e）1997年11月28日PCT PCT 1996年5月23日PCT公布。 公开号WO96 / 38793 日期1996年12月5日许多数字处理器都有一个由两个控制信号控制的异步总线。 为了将同步存储器连接到异步总线，需要接口逻辑。 在用于将数据从异步电路传送到同步电路的接口中，将定时控制信号通过触发器与系统时钟同步而写入中间寄存器中。 相应地，在用于将数据从同步电路传送到异步电路的接口中，指示来自同步电路的读取事务的信号通过触发器电路与系统时钟同步。

公开(公告)号：US08081717B2

公开(公告)日：2011-12-20

申请号：US12069524

申请日：2008-02-11

Applicant: Juha P Karjalainen ,  Markku Vainikka ,  Olli Piirainen

Inventor： Juha P Karjalainen ,  Markku Vainikka ,  Olli Piirainen

IPC: H04L27/06

CPC classification number: H04W56/0045 ,  H04B7/2681 ,  H04L7/0054

Abstract: An apparatus includes a radio frequency receiver and a timing adjustment unit that contains at least two channel impulse response estimators. The at least two channel impulse response estimators include an on-time estimator and at least one of an early estimator and a late estimator. The apparatus also includes a calculation unit that is configurable to obtain a channel estimate for each measured channel impulse response and to average obtained channel estimates over a plurality of received signal events to determine a timing adjustment in accordance with residual signal power.

Abstract translation: 一种装置包括射频接收机和包含至少两个信道脉冲响应估计器的定时调整单元。 所述至少两个信道脉冲响应估计器包括接通时间估计器和早期估计器和后期估计器中的至少一个。 该装置还包括计算单元，其可配置为获得针对每个测量的信道脉冲响应的信道估计，并且在多个接收信号事件上平均获得的信道估计，以根据剩余信号功率确定定时调整。

公开(公告)号：US07885318B2

公开(公告)日：2011-02-08

申请号：US11897962

申请日：2007-08-31

Applicant: Mikko Saily ,  Olli Piirainen ,  Kari Niemela ,  Jari Hulkkonen

Inventor： Mikko Saily ,  Olli Piirainen ,  Kari Niemela ,  Jari Hulkkonen

IPC: H04B1/00

CPC classification number: H04B17/345

Abstract: A method, mobile device, network device, system, and software are devised for soft value scaling with a single antenna interference cancellation (SAIC) receiver, or with an interference rejection combining (IRC) receiver, in an unsynchronized network. A signal is received having interference that is caused by a non-synchronized network. A desired power level of that signal is calculated. Then the desired power is compared to a total power of the signal, in order to identify a portion of a received burst having substantial interference. Then that portion of the received burst is weighted, to reduce its importance during decoding.

Abstract translation: 设计了一种方法，移动设备，网络设备，系统和软件，用于在不同步网络中使用单天线干扰消除（SAIC）接收机或与干扰抑制组合（IRC）接收机进行软值缩放。 接收到具有由非同步网络引起的干扰的信号。 计算该信号的期望功率电平。 然后将期望的功率与信号的总功率进行比较，以便识别具有实质干扰的接收脉冲串的一部分。 然后对接收到的突发的那部分进行加权，以减少它在解码过程中的重要性。

公开(公告)号：US20080212666A1

公开(公告)日：2008-09-04

申请号：US11712474

申请日：2007-03-01

Applicant: Kiran Kuchi ,  Olli Piirainen ,  Olav Tirkkonen

Inventor： Kiran Kuchi ,  Olli Piirainen ,  Olav Tirkkonen

IPC: H03K5/159

CPC classification number: H04L25/0228 ,  H04B7/0413 ,  H04B17/345 ,  H04L27/2647

Abstract: An interference rejection algorithm for a radio receiver is presented. According to the present solution a signal comprising a training sequence and a data sequence is received at the radio receiver. A radio channel response may be estimated from the received training sequence, and interference parameters may be estimated from at least one of the received training sequence and the received data sequence, the estimation of the interference parameters comprising smoothing a frequency spectrum of at least one of the estimated channel response and the estimated interference parameters through averaging. Then, frequency domain interference suppression weights are calculated from the estimated channel response and the interference parameters, and weighting of the received data sequence is carried out with the calculated weights.

Abstract translation: 提出了无线电接收机的干扰抑制算法。 根据本解决方案，在无线电接收机处接收包括训练序列和数据序列的信号。 可以从接收到的训练序列估计无线电信道响应，并且可以从接收到的训练序列和接收的数据序列中的至少一个估计干扰参数，干扰参数的估计包括平滑以下中的至少一个的频谱： 通过平均估计的信道响应和估计的干扰参数。 然后，根据估计的信道响应和干扰参数计算频域干扰抑制权重，并且使用所计算的权重来执行接收数据序列的加权。