Carrier frequency shifting in mobile communications
    31.
    发明申请
    Carrier frequency shifting in mobile communications 审中-公开
    移动通信中载波频移

    公开(公告)号:US20080014877A1

    公开(公告)日:2008-01-17

    申请号:US11726734

    申请日:2007-03-22

    IPC分类号: H04B1/02

    CPC分类号: H04W72/082

    摘要: The specification and drawings present a new method, system, apparatus and software product for carrier frequency shifting in mobile communication systems, e.g., for eliminating or reducing interference, e.g., for a communication between a mobile station and a network element. The communication between the mobile station and the network element may be performed within a GSM/EDGE radio access network. A signal (e.g., a DSR or MDSR carrier) and at least one further signal (e.g., a speech carrier) are identified, wherein bandwidths of the signal and of the at least one further signal overlap. Then, a frequency shift for said signal may be determined according to a predetermined criterion and a carrier frequency of the signal may be shifted by the determined frequency shift, e.g., for eliminating or reducing the interference.

    摘要翻译: 说明书和附图提出了用于移动通信系统中的载波频移的新方法,系统,装置和软件产品,例如用于消除或减少干扰,例如用于移动台和网络元件之间的通信。 移动台与网元之间的通信可以在GSM / EDGE无线接入网内进行。 识别信号(例如,DSR或MDSR载波)和至少一个另外的信号(例如,语音载波),其中信号和至少一个另外的信号的带宽重叠。 然后,可以根据预定标准确定所述信号的频移,并且可以将信号的载波频率移位所确定的频移,例如用于消除或减少干扰。

    Clipping of transmission signal
    32.
    发明申请
    Clipping of transmission signal 有权
    剪切传输信号

    公开(公告)号:US20060154622A1

    公开(公告)日:2006-07-13

    申请号:US11074006

    申请日:2005-03-08

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    IPC分类号: H04B1/04 H04B17/00

    摘要: 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.

    摘要翻译: 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。

    Optimization of channel equalizer
    33.
    发明授权
    Optimization of channel equalizer 失效
    通道均衡器优化

    公开(公告)号:US06954495B2

    公开(公告)日:2005-10-11

    申请号:US09998183

    申请日:2001-12-03

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    CPC分类号: H04L25/03006 H04B17/309

    摘要: A method for carrying out channel equalization in a radio receiver wherein an impulse response is estimated, noise power is determined by estimating a co-variance matrix of the noise contained in a received signal before prefiltering, and tap coefficients of prefilters and an equalizer are calculated. The method comprises determining the noise power after prefiltering by estimating a noise covariance matrix, after which input signals of the channel equalizer are weighted by weighting coefficients obtained from the noise covariance estimation.

    摘要翻译: 一种用于在无线电接收机中执行信道均衡的方法,其中估计出脉冲响应,通过估计包含在预滤波之前的接收信号中的噪声的协方差矩阵来确定噪声功率,并且计算预滤波器和均衡器的抽头系数 。 该方法包括通过估计噪声协方差矩阵来确定预滤波后的噪声功率,之后通过从噪声协方差估计获得的加权系数来加权信道均衡器的输入信号。

    Method and arrangement for connecting processor to ASIC
    34.
    发明授权
    Method and arrangement for connecting processor to ASIC 失效
    将处理器连接到ASIC的方法和装置

    公开(公告)号:US06654844B1

    公开(公告)日:2003-11-25

    申请号:US09423134

    申请日:2000-02-04

    IPC分类号: G06F1300

    CPC分类号: G06F13/4213

    摘要: 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.

    摘要翻译: 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。

    Reception method and a receiver
    35.
    发明授权
    Reception method and a receiver 有权
    接收方式和接收方

    公开(公告)号:US06590939B1

    公开(公告)日:2003-07-08

    申请号:US09367399

    申请日:1999-08-13

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    IPC分类号: H04L512

    CPC分类号: H04L25/067 H03M13/39

    摘要: The invention relates to a reception method and a receiver. Mechanisms are used for generating, at each level, numbers relating to a bit 1 and a bit 2 and representing a probability of a transition metric of survivor paths. Mechanisms are used for separately summing the numbers relating to the bit 1 and the bit 0 of more than one state and representing the probability of the transition metric. Mechanisms are used for generating logarithms of the sums and means for generating a difference of the logic numbers relating to the bit 1 and the bit 0 representing the probability of the transition metric, whereby a received bit can be determined without a correct path tracing phase.

    摘要翻译: 本发明涉及一种接收方法和接收机。 机制用于在每个级别生成与位1和位2有关的数字,并且表示幸存路径的转换度​​量的概率。 机制用于对与多于一个状态的位1和位0相关的数字进行单独求和,并表示转换度量的概率。 机制用于产生和的对数和用于产生与位1相关的逻辑数字和表示转换度量的概率的位0的差异的装置,由此可以在没有正确的路径跟踪阶段的情况下确定接收的位。

    Reception method and a receiver
    36.
    发明授权
    Reception method and a receiver 失效
    接收方式和接收方

    公开(公告)号:US06396878B1

    公开(公告)日:2002-05-28

    申请号:US09171881

    申请日:1998-10-28

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    IPC分类号: H04L512

    CPC分类号: H03M13/39

    摘要: The present invention relates to reception method and apparatus. The invention is characterized in that received symbols are function of bits which are determined by means of temporally successive trellis levels, which comprises a predetermined number of states, with a transition from each of the states to a state at the next level being performed on the basis of a received signal.

    摘要翻译: 本发明涉及接收方法和装置。 本发明的特征在于,接收的符号是通过时间上相继的网格级别确定的比特的功能,其包括预定数量的状态,从每个状态到下一级的状态的转换在 接收信号的基础。

    Method of generating signal amplitude responsive to desired function, and converter
    37.
    发明授权
    Method of generating signal amplitude responsive to desired function, and converter 有权
    产生响应所需功能的信号幅度的方法和转换器

    公开(公告)号:US06173301B2

    公开(公告)日:2001-01-09

    申请号:US09117976

    申请日:1998-08-11

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    IPC分类号: G06F102

    CPC分类号: G06F1/0356

    摘要: 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.

    摘要翻译: 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。

    Base station having transmitter power adjustment system
    38.
    发明授权
    Base station having transmitter power adjustment system 失效
    基站具有发射机功率调整系统

    公开(公告)号:US6084868A

    公开(公告)日:2000-07-04

    申请号:US849886

    申请日:1997-06-17

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    CPC分类号: H04W88/08

    摘要: 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.

    摘要翻译: 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。

    Method for forming transition metrics and a receiver of a cellular radio
system
    39.
    发明授权
    Method for forming transition metrics and a receiver of a cellular radio system 失效
    用于形成转换度量的方法和蜂窝无线电系统的接收机

    公开(公告)号:US6009127A

    公开(公告)日:1999-12-28

    申请号:US875200

    申请日:1997-08-01

    申请人: Olli Piirainen

    发明人: Olli Piirainen

    摘要: 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.

    摘要翻译: 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。

    Method for determining connection quality in a receiver utilizing a
Viterbi decoder
    40.
    发明授权
    Method for determining connection quality in a receiver utilizing a Viterbi decoder 失效
    一种使用维特比解码器确定接收机连接质量的方法

    公开(公告)号:US5944844A

    公开(公告)日:1999-08-31

    申请号:US894599

    申请日:1997-08-22

    CPC分类号: H04L1/0054 H04L1/20

    摘要: 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.

    摘要翻译: 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。