公开(公告)号：US20080064337A1

公开(公告)日：2008-03-13

申请号：US11897962

申请日：2007-08-31

申请人： Mikko Saily ,  Olli Piirainen ,  Kari Niemela ,  Jari Hulkkonen

发明人： Mikko Saily ,  Olli Piirainen ,  Kari Niemela ,  Jari Hulkkonen

IPC分类号： H04B15/00 ,  H04B1/00

CPC分类号： H04B17/345

摘要： 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.

摘要翻译： 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：US07340004B2

公开(公告)日：2008-03-04

申请号：US10493396

申请日：2002-10-23

申请人： Tapio Vuopala ,  Olli Piirainen

发明人： Tapio Vuopala ,  Olli Piirainen

IPC分类号： H04L27/00

CPC分类号： H04B1/70755 ,  H04B2201/70706 ,  H04L27/2624 ,  H04L27/366

摘要： A method for limiting a signal in a radio transmitter comprises giving a signal a limiting threshold, taking at least two samples from the signal for obtaining sample values, adding one or more sample values between the obtained first and at least one subsequent sample values, searching for sample values exceeding the limiting threshold, and if at least one sample value exceeding the limiting threshold is found determining limiting coefficients for a predetermined number of sample values by means of the at least one sample value exceeding the limiting threshold, and limiting the signal by one or more determined coefficients.

摘要翻译： 一种用于限制无线电发射机中的信号的方法包括：向信号提供限制阈值，从所述信号获取至少两个样本以获得样本值，在获得的第一和至少一个后续采样值之间加上一个或多个采样值，搜索 对于超过限制阈值的采样值，并且如果发现超过限制阈值的至少一个采样值通过超过限制阈值的至少一个采样值确定预定数量的采样值的限制系数，并且通过 一个或多个确定的系数。

公开(公告)号：US07339918B2

公开(公告)日：2008-03-04

申请号：US10080509

申请日：2002-02-25

申请人： Olli Piirainen

发明人： Olli Piirainen

IPC分类号： H04B7/212

CPC分类号： H04L1/0047 ,  H04B17/318

摘要： A method for improving the quality of data transmission in cellular radio systems utilizes time division multiple access, in which the strength of a signal received at a base station is measured and a decoder for soft decision-making is employed. The method includes measuring the strength of the signal the base station receives in at least two consecutive time slots and determining a weighting coefficient by comparing the signal strengths and reducing, using the determined weighting coefficient in a soft bit decision-making, the significance of at least one symbol at the beginning of the burst the base station receives in a time slot if the difference between the measured signal strengths is considerable.

摘要翻译： 用于提高蜂窝无线电系统中的数据传输质量的方法利用时分多址接入，其中测量在基站接收的信号的强度，并采用用于软判决的解码器。 该方法包括测量基站在至少两个连续时隙中接收的信号的强度，并且通过比较信号强度来确定加权系数，并且通过软比特决策中的确定的加权系数来减少在 如果测量的信号强度之间的差异是相当大的，则基站在时隙中接收的突发的开始处的最少一个符号。

公开(公告)号：US20080037411A1

公开(公告)日：2008-02-14

申请号：US11897025

申请日：2007-08-27

申请人： Kari Niemela ,  Olli Piirainen ,  Mikko Saily ,  Jari Hulkkonen

发明人： Kari Niemela ,  Olli Piirainen ,  Mikko Saily ,  Jari Hulkkonen

IPC分类号： H04J3/06

CPC分类号： H04B1/406 ,  H04B1/04 ,  H04W88/06

摘要： The specification and drawings present a new method, system, apparatus and software product for variable filtering of a mobile station (MS) for supporting uplink communications using available capabilities of a network element in wireless communication systems (e.g., evolved GERAN). The MS may have at least two different pulse shaping filter capabilities providing at least two different bandwidths: one narrower being suitable for legacy transceivers and another wider and thus optimal for variable symbol rate from performance point of view. A BSS (base station subsystem) may then request to use one of those filter capabilities according to BSS available resources

摘要翻译： 说明书和附图提出了一种用于使用无线通信系统（例如，演进GERAN）中的网元的可用能力支持上行链路通信的移动台（MS）的可变过滤的新方法，系统，装置和软件产品。 MS可以具有提供至少两个不同带宽的至少两个不同的脉冲整形滤波器能力：一个较窄的适用于传统收发器，另一个较窄，因此从性能的角度来看，可变符号率最佳。 然后，BSS（基站子系统）可以根据BSS可用资源请求使用那些过滤能力之一

公开(公告)号：US07317767B2

公开(公告)日：2008-01-08

申请号：US10490596

申请日：2002-09-27

申请人： Aki Happonen ,  Olli Piirainen

发明人： Aki Happonen ,  Olli Piirainen

IPC分类号： H04L25/06

CPC分类号： H04L27/0008 ,  H04L25/0212 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/062 ,  H04L27/2017 ,  H04L27/2067

摘要： 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.

摘要翻译： 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：US07224705B2

公开(公告)日：2007-05-29

申请号：US10731427

申请日：2003-12-10

申请人： Olli Piirainen

发明人： Olli Piirainen

IPC分类号： H04J3/06 ,  G04C11/02 ,  H04L7/00

CPC分类号： H04W56/0015 ,  H04B7/2668 ,  H04J3/0688 ,  H04W88/10

摘要： A method for synchronizing a multi-mode base station using one clock, when the systems to be synchronized are a GSM-type telecommunications system, for instance a GSM or EDGE system, and a WCDMA-type telecommunications system. In the method, the clock of the WCDMA-type system or a multiple thereof is selected as the system clock of the multi-mode base station, the system clock of the GSM-type system is implemented using multiples of the frequency of the selected clock, and the frame structure of the GSM-type system is synchronized at intervals of thirteen frames or a multiple of thirteen frames.

摘要翻译： 当要同步的系统是例如GSM或EDGE系统的GSM型电信系统以及WCDMA型电信系统时，使用一个时钟同步多模式基站的方法。 在该方法中，WCDMA系统的时钟或其倍数被选择为多模式基站的系统时钟，GSM系统的系统时钟使用选定时钟频率的倍数来实现 ，GSM系统的帧结构以13帧或13帧的倍数进行同步。

公开(公告)号：US20070005352A1

公开(公告)日：2007-01-04

申请号：US11441117

申请日：2006-05-26

申请人： Petri Vaisanen ,  Olli Piirainen ,  Markku Vainikka

发明人： Petri Vaisanen ,  Olli Piirainen ,  Markku Vainikka

IPC分类号： G10L19/02

CPC分类号： H04B1/16 ,  G10L25/18

摘要： Solutions for receiving and transmitting variable transmission bandwidth signal are provided. A receiver comprises square-root raised cosine filter bank, each filter of the filter bank configured to filter a subband, and an adder configured to add up the output signals of one or more filters of the filter bank to obtain a sum signal, the sum of the subbands of the one or more filters being equal to the transmission bandwidth of the received signal. A transmitter comprises a transmission filter, the roll-off factor of the transmission filter being selected on the basis of the bandwidth of the signal to be transmitted.

摘要翻译： 提供了用于接收和发送可变传输带宽信号的解决方案。 接收机包括平方根升余弦滤波器组，滤波器组的每个滤波器被配置为滤波子带，以及加法器，被配置为将滤波器组的一个或多个滤波器的输出信号相加以获得和信号，该和 的一个或多个滤波器的子带等于接收信号的传输带宽。 发送机包括发送滤波器，根据要发送的信号的带宽选择发送滤波器的滚降因子。

公开(公告)号：US20060291596A1

公开(公告)日：2006-12-28

申请号：US11266359

申请日：2005-11-04

申请人： Olli Piirainen

发明人： Olli Piirainen

IPC分类号： H03D1/04

CPC分类号： H04B1/1027 ,  H04B17/373

摘要： The invention relates to a method of estimating a noise and interference covariance matrix and to a receiver. The method comprises: estimating an initial noise and interference covariance matrix on the basis of a received signal; reducing the impact of the background noise of the receiver from the initial noise and interference covariance matrix for obtaining a residual matrix; accepting the obtained residual matrix when the residual matrix is at least approximately positive semidefinite; modifying the obtained residual matrix such that the positive semidefinity of the residual matrix is achieved when the residual matrix is not at least approximately positive semidefinite; and adding the impact of background noise back to the residual matrix for estimating a final noise and interference covariance matrix.

摘要翻译： 本发明涉及一种估计噪声和干扰协方差矩阵和接收机的方法。 该方法包括：基于接收信号估计初始噪声和干扰协方差矩阵; 从初始噪声和干扰协方差矩阵减小接收机的背景噪声对获得残余矩阵的影响; 当残余矩阵至少约为正半定数时，接受所获得的残余矩阵; 修改所获得的残余矩阵，使得当残余矩阵不至少近似为正半固定时，实现残余矩阵的正半精度; 并将背景噪声的影响加回到残差矩阵中，以估计最终的噪声和干扰协方差矩阵。

公开(公告)号：US07031419B2

公开(公告)日：2006-04-18

申请号：US09893735

申请日：2001-06-29

申请人： Olli Piirainen

发明人： Olli Piirainen

IPC分类号： H04L7/00

CPC分类号： H04L1/0668 ,  H04L1/1607 ,  H04L1/1819 ,  H04L1/1845

摘要： The invention relates to a data transmission system between two transceivers, including: dividing the symbols to be transmitted into blocks, the number of which is divisible by the number of transmitting antennas; transmitting one block using each antenna; receiving the blocks using one or more antennas; checking whether the blocks were received successfully; and, if the reception of the blocks failed, storing the received blocks in memory; retransmitting the same blocks in a predetermined format; receiving the retransmitted blocks and combining them with the blocks in memory, the predetermined format being selected in the method so that the blocks transmitted first and the retransmitted blocks form space-time block coding.

摘要翻译： 本发明涉及两个收发机之间的数据传输系统，包括：将要发送的符号划分成块，其数量可以被发送天线的数量除尽; 使用每个天线发射一个块; 使用一个或多个天线接收所述块; 检查块是否被成功接收; 并且如果块的接收失败，则将接收到的块存储在存储器中; 以预定格式重传相同的块; 接收重发块并将其与存储器中的块组合，在该方法中选择预定格式，使得首先发送的块和重发块形成空时块编码。

公开(公告)号：US07012973B1

公开(公告)日：2006-03-14

申请号：US09936540

申请日：1999-03-10

申请人： Olli Piirainen

发明人： Olli Piirainen

IPC分类号： H04L27/06

CPC分类号： H04L27/3809 ,  H04B7/01 ,  H04L25/0224 ,  H04L25/03019 ,  H04L27/0014 ,  H04L2027/0038 ,  H04L2027/0065 ,  H04L2027/0095

摘要： A system and method for estimating Doppler shift compensation in a mobile communication system is described. A channel impulse response determination circuit determines a channel impulse response for the channel on which the signal is received. A reference vector is generated using a set of known symbols and the channel impulse response, and an error vector is then generated by comparing the reference vector with received samples of the signal. In addition, the noise variance of the incoming signal can be determined. Then, a Doppler correction factor is estimated having a real part representing amplitude correction and an imaginary part representing phase correction.

摘要翻译： 描述了用于估计移动通信系统中的多普勒频移补偿的系统和方法。 信道脉冲响应确定电路确定接收信号的信道的信道脉冲响应。 使用一组已知符号和信道脉冲响应来生成参考矢量，然后通过将参考矢量与信号的接收采样进行比较来生成误差矢量。 此外，可以确定输入信号的噪声方差。 然后，估计具有表示幅度校正的实部和表示相位校正的虚部的多普勒校正因子。