公开(公告)号：US06173301B2

公开(公告)日：2001-01-09

申请号：US09117976

申请日：1998-08-11

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: G06F102

CPC classification number: G06F1/0356

Abstract: The invention relates to a method for generating a signal amplitude behaving according to a desired function and to a converter implementing the method. In the method, a function that is used for controlling the behaviour of a signal amplitude is piecewise linearized to provide straight lines; a slope and a constant term of each straight line is stored in a memory (202 and 203); and a midpoint of each straight line is shifted to form an origin in a common coordinate system. Variable data (213) is used as address data, which is divided into an MSB (207) and an LSB part (208). The MSB part (207) is used for addressing from the memory (202 and 203) the slope and the constant term of the straight line. The LSB part (208) functions as a variable of a common coordinate system of the straight lines. The amplitude is generated by summing in a summer (205) a product determined by the slope and the LSB part to the constant term, the product being generated in means (204) as a selected summing of arithmetically shifted, masked and complemented slopes controlled by the LSB part.

Abstract translation: 本发明涉及一种根据所需功能产生信号幅度行为的方法以及实现该方法的转换器。 在该方法中，用于控制信号幅度行为的函数被分段线性化以提供直线; 每条直线的斜率和常数项被存储在存储器（202和203）中; 并且每个直线的中点被移位以在公共坐标系中形成原点。 可变数据（213）被用作地址数据，其被分成MSB（207）和LSB部分（208）。 MSB部分（207）用于从存储器（202和203）寻址斜率和直线的常数项。 LSB部分（208）用作直线的公共坐标系的变量。 通过在夏季（205）中将由斜率和LSB部分确定的乘积相加到常数项来产生幅度，乘积在装置（204）中作为由算术移位的，掩蔽的和补充的斜率的选择加法生成，由 LSB部分。

公开(公告)号：US6084868A

公开(公告)日：2000-07-04

申请号：US849886

申请日：1997-06-17

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04B7/005 ,  H04B7/26 ,  H04W88/08 ,  H04J3/00

CPC classification number: H04W88/08

Abstract: A base station for a mobile communication system which has switching centers and base stations connected by telecommunication links, each base station transmitting radio signals divided into a plurality of time-slots in a frame structure, a controller unit for controlling the base station; a transmitter for generating a transmission signal, the transmitter being connected to the switch to supply the transmission signal to the antenna via the switch; a counter for counting the length of time-slots in a frame structure synchronized by a frame alignment signal, a programmable memory in which one or more delay values are each stored as a counter value, a selecting unit for selecting a delay value desired by the user, and a power level memory responsive to the counter and storing power level memory momentary power values corresponding to the parts of the time-slots in the frame structure, as well as information on whether the switch supplying the transmission signal of the transmitter to the antenna is switched off or on, or neither, the power level memory being arranged so that each part of the time-slot in a frame structure is represented by a specific memory address of the power level memory, and in the memory location corresponding to the memory address, in addition to momentary power values of the curve indicating the power level, information is stored on whether the switch supplying the transmission signal of the transmitter to the antenna is switched off or on, or neither.

Abstract translation: PCT No.PCT / FI95 / 00688 Sec。 371日期：1997年6月17日 102（e）日期1997年6月17日PCT 1995年12月19日PCT PCT。 公开号WO96 / 19878 日期1996年6月27日一种具有通过电信链路连接的交换中心和基站的移动通信系统的基站，每个基站以帧结构发送划分为多个时隙的无线信号，控制单元 基站; 用于产生传输信号的发射机，所述发射机连接到所述开关，以经由所述开关将所述发射信号提供给所述天线; 用于计数由帧对准信号同步的帧结构中的时隙的长度的计数器，其中每个存储一个或多个延迟值作为计数器值的可编程存储器;选择单元，用于选择所需的延迟值 用户和功率电平存储器，其响应于计数器并且存储对应于帧结构中的时隙的部分的功率电平存储器瞬时功率值，以及关于将发射机的发送信号提供给 天线被切断或接通，或者两者都不是功率级存储器被布置，使得帧结构中的时隙的每个部分由功率电平存储器的特定存储器地址表示，并且在对应于 存储器地址除了表示功率电平的曲线的瞬时功率值之外，还存储有将发送器的发送信号提供给t的开关的信息 他的天线被关闭或打开，或者两者都没有。

公开(公告)号：US6009127A

公开(公告)日：1999-12-28

申请号：US875200

申请日：1997-08-01

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H03M13/23 ,  H03M13/41 ,  H04L1/00 ,  H03D1/00 ,  H04L27/06

CPC classification number: H03M13/6505 ,  H03M13/41 ,  H04L1/0054 ,  H04L1/0059

Abstract: A method and a receiver for forming transition metrics in the receiver of a digital cellular radio system. The receiver includes a hardware implementation of a transition metrics calculation unit for Viterbi decoding. The receiver includes a shift register for storing coefficients of a generator polynomial of a convolutional code. The receiver also includes masking means arranged to mask a state of the Viterbi decoding by the coefficients of the polynomial. The receiver has odd parity means arranged to form a parity bit of the state of the masked Viterbi decoding, the parity bit being arranged to control a block forming the transition metrics.

Abstract translation: PCT No.PCT / FI96 / 00646 Sec。 371日期：1997年8月1日 102（e）日期1997年8月1日PCT 1996年12月3日PCT公布。 公开号WO97 / 21275 日期1997年6月12日用于在数字蜂窝无线电系统的接收机中形成转换度量的方法和接收器。 接收机包括用于维特比解码的转换度量计算单元的硬件实现。 接收机包括用于存储卷积码的生成多项式的系数的移位寄存器。 接收机还包括被设置为通过多项式的系数来屏蔽维特比解码的状态的掩蔽装置。 接收机具有奇偶校验装置，被布置成形成被屏蔽的维特比解码状态的奇偶校验位，奇偶校验位被布置为控制形成转换度量的块。

公开(公告)号：US5944844A

公开(公告)日：1999-08-31

申请号：US894599

申请日：1997-08-22

Applicant: Olli Piirainen ,  Kari Jyrkka

Inventor： Olli Piirainen ,  Kari Jyrkka

IPC: H03M13/23 ,  H04B17/00 ,  H04L1/00 ,  H04L1/20 ,  G06F11/10 ,  H04L27/06

CPC classification number: H04L1/0054 ,  H04L1/20

Abstract: A receiver and a method for determining connection quality in a cellular radio system. Received signals are decoded with a Viterbi decoder. Decision variables, representing decisions, are converted into a float value format. The converted decision variables are stored in a memory unit. During a traceback step of a Viterbi algorithm, a sum of absolute values of stored ones of the decision variables, which are in a correct path, are calculated and a minimum value of the absolute values of the stored ones of the decision variables in the correct path is calculated. The sum of the absolute values is averaged over a desired measurement period and compared to a predetermined threshold to obtain a bit error rate over a connection. Faulty signal frames are detected based on the minimum value of the absolute values.

Abstract translation: PCT No.PCT / FI96 / 00106 Sec。 371日期1997年8月22日 102（e）日期1997年8月22日PCT提交1996年2月22日PCT公布。 公开号WO96 / 26583 日期：1996年8月29日一种用于确定蜂窝无线电系统中的连接质量的接收机和方法。 接收信号用维特比解码器解码。 表示决策的决策变量将转换为浮点值格式。 转换的决定变量存储在存储单元中。 在维特比算法的回溯步骤期间，计算存储在正确路径中的一个决策变量的绝对值之和，并确定所存储的一个决策变量的绝对值的最小值在正确的 路径被计算。 在期望的测量周期内对绝对值的和进行平均，并与预定阈值进行比较，以获得连接上的误码率。 基于绝对值的最小值检测到故障信号帧。

公开(公告)号：US07672642B2

公开(公告)日：2010-03-02

申请号：US11312492

申请日：2005-12-21

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04B1/00 ,  H04B1/04 ,  H04B7/00 ,  H04M3/00 ,  H04M1/00

CPC classification number: H04L5/06

Abstract: Embodiments of the invention relate to uplink communication in a GSM/EDGE telecommunication system. A method according to certain embodiments of the invention include at least one wide-band carrier wave in the group of carrier waves being generated in a mobile station by applying linear modulation at a first modulation symbol rate, the first modulation symbol rate being a multiple of a second modulation symbol rate, while preserving a predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

Abstract translation: 本发明的实施例涉及GSM / EDGE电信系统中的上行链路通信。 根据本发明的某些实施例的方法包括在移动站中通过以第一调制符号速率应用线性调制来生成载波组中的至少一个宽带载波，第一调制符号速率是 第二调制符号速率，同时保留预定义的载波间隔，并允许所述至少一个宽带载波与至少一个相邻载波重叠。

公开(公告)号：US07643801B2

公开(公告)日：2010-01-05

申请号：US11074006

申请日：2005-03-08

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04B1/04

CPC classification number: H04L27/2623 ,  H03F1/0205 ,  H03F1/32 ,  H03F2201/3236 ,  H04B1/04 ,  H04B2001/0416

Abstract: A transmitter clips a transmission signal before transmission in order to reduce the strength of at least one peak of the transmission signal exceeding a predetermined threshold. The transmitter includes a clipper having a minimizer, a filter and an adder. The minimizer minimizes of a cost function with respect to an optimization signal, the cost function having weighted terms as a function of the optimization signal. The terms relate to an effective modulation distortion and an effective overshoot exceeding the predetermined threshold. The filter forms a clipping signal by filtering the optimization signal formed as a result of the minimization according to the spectrum emission mask requirements of the radio system. The adder subtracts the clipping signal from the transmission signal.

Abstract translation: 发射机在传输之前剪切传输信号，以便减少超过预定阈值的传输信号的至少一个峰值的强度。 发射机包括具有最小化器，滤波器和加法器的限幅器。 最小化器相对于优化信号最小化成本函数，成本函数具有作为优化信号的函数的加权项。 这些术语涉及超过预定阈值的有效调制失真和有效超调。 滤波器通过根据无线电系统的频谱发射掩模要求对作为最小化的结果形成的优化信号进行滤波来形成限幅信号。 加法器从发送信号中减去削波信号。

公开(公告)号：US20090202031A1

公开(公告)日：2009-08-13

申请号：US12069524

申请日：2008-02-11

Applicant: Juha P. Karjalainen ,  Markku J. Vainikka ,  Olli Piirainen

Inventor： Juha P. Karjalainen ,  Markku J. Vainikka ,  Olli Piirainen

IPC: H04L7/00

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：US07260162B2

公开(公告)日：2007-08-21

申请号：US10168632

申请日：2000-12-15

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H03D1/06

CPC classification number: H04L1/0036 ,  H04L1/0009 ,  H04L1/0046 ,  H04L25/03006 ,  H04L2025/03726

Abstract: A method and apparatus for improving the quality of a signal which has been detrimentally affected by inter-symbol interference due to time dispersion. The invention includes selecting one of at least two algorithms of equalization and after the selection, and processing the signal by performing steps according to the selected algorithm.

Abstract translation: 一种用于改善由于时间分散而不利地受到符号间干扰的影响的信号质量的方法和装置。 本发明包括选择均衡和选择之后的至少两种算法中的一种，并且通过根据所选择的算法执行步骤来处理信号。

公开(公告)号：US20070161361A1

公开(公告)日：2007-07-12

申请号：US11357084

申请日：2006-02-21

Applicant: Petri Vaisanen ,  Olli Piirainen ,  Markku Vainikka

Inventor： Petri Vaisanen ,  Olli Piirainen ,  Markku Vainikka

IPC: H04B1/00 ,  H04B1/18 ,  H04B1/10

CPC classification number: H04L25/03159 ,  H04B1/1036 ,  H04L25/0224 ,  H04L25/0328

Abstract: An interference suppression scheme is provided for a radio receiver. According to the provided interference suppression scheme, the bandwidth of a received pilot signal and a data signal is divided into a plurality of frequency sub-bands. The pilot signal and the data signal have been transmitted according to single carrier data transmission technology. Interference parameters are calculated for each frequency sub-band separately. Interference suppression may be carried out jointly or separately for each frequency sub-band. After the interference suppression, the frequency sub-bands are combined. A filter bank may be used for dividing the total frequency band into sub-bands.

Abstract translation: 为无线电接收机提供干扰抑制方案。 根据所提供的干扰抑制方案，接收到的导频信号和数据信号的带宽被划分成多个频率子带。 导频信号和数据信号已经根据单载波数据传输技术进行了传输。 分别计算每个频率子带的干扰参数。 干扰抑制可以针对每个频率子带共同地或单独地执行。 在干扰抑制之后，频率子带被组合。 可以使用滤波器组来将总频带划分成子带。

公开(公告)号：US20070054633A1

公开(公告)日：2007-03-08

申请号：US11247324

申请日：2005-10-12

Applicant: Olli Piirainen

Inventor： Olli Piirainen

IPC: H04B17/00 ,  H03C1/62

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。