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1. 发明申请

US20060093056A1 Signal reception in mobile communication network 审中-公开
标题翻译：移动通信网络中的信号接收
公开(公告)号：US20060093056A1
公开(公告)日：2006-05-04
申请号：US11125408
申请日：2005-05-10
申请人： Pekka Kaasila , Marko Lampinen , Jorma Kaikkonen
发明人： Pekka Kaasila , Marko Lampinen , Jorma Kaikkonen
IPC分类号： H04L1/02 , H04B1/10 , H04B1/707
CPC分类号： H04L1/0631 , H04B1/707 , H04B7/0669 , H04B7/0891 , H04L1/0618 , H04L25/0204 , H04L25/0206
摘要： A receiver in a mobile communication network, including a receiving unit to receive signals transmitted in at least two channels, a channel estimator to form a channel estimate for each transmit channel, at least two linear filters, wherein each linear filter is configured to filter a signal received on a channel, each filter having a filter coefficient defining the filtering, a calculating unit to form at least one combining weight by convolving a channel estimate and a filter coefficient, a combiner, which is configured to form at least two filter-specific weighted signals by weighting a filtered signal with at least one combining weight; and the combiner is configured to combine at least two filter-specific weighted signals to provide an estimate for the transmitted signal.
摘要翻译：一种移动通信网络中的接收机，包括接收单元，用于接收在至少两个信道中发送的信号，信道估计器，以形成每个发射信道的信道估计，至少两个线性滤波器，其中每个线性滤波器被配置为对每个滤波器具有限定滤波的滤波器系数;计算单元，用于通过卷积信道估计和滤波器系数来形成至少一个组合权重;组合器，其被配置成形成至少两个滤波器特定的加权信号，通过用至少一个组合权重对滤波信号进行加权; 并且所述组合器被配置为组合至少两个滤波器专用加权信号以提供所发射信号的估计。

2. 发明申请

US20090258621A1 Noise/signal estimation for wireless systems 有权
标题翻译：无线系统的噪声/信号估计
公开(公告)号：US20090258621A1
公开(公告)日：2009-10-15
申请号：US12292613
申请日：2008-11-21
申请人： Pirkka Silvola , Veli-Pekka Kaasila
发明人： Pirkka Silvola , Veli-Pekka Kaasila
IPC分类号： H04B17/00
CPC分类号： H04B17/345 , H04B17/318
摘要： A method, apparatus, and computer program product, wherein received signal components are determined for a selected group of sub-carriers based on individual noise and signal contributions of the sub-carriers. At least one of noise and a parameter relating to at least one of noise and a signal of a received signal is estimated by combining the determined received signal components depending on a sign of preamble symbols of the sub-carriers.
摘要翻译：一种方法，装置和计算机程序产品，其中基于子载波的单独噪声和信号贡献，为所选择的子载波组确定接收信号分量。通过根据子载波的前导码符号的符号组合所确定的接收信号分量来估计噪声和与接收信号的信号中的至少一个有关的参数中的至少一个。

3. 发明授权

US07042938B2 Soft bit computation for a reduced state equalizer 失效
公开(公告)号：US07042938B2
公开(公告)日：2006-05-09
申请号：US09928927
申请日：2001-08-13
申请人： Andrei Malkov , Heikki Berg , Pekka Kaasila , Kiran Kumar Kuchi , Jan C. Olivier
发明人： Andrei Malkov , Heikki Berg , Pekka Kaasila , Kiran Kumar Kuchi , Jan C. Olivier
IPC分类号： H04B1/38
CPC分类号： H04L25/03318 , H04L25/03235 , H04L2025/03401 , H04L2025/0342
摘要： Method and apparatus for soft bit computation with a reduced state equalizer. The method assures that the number of states in the equalizer is reduced to obtain acceptable complexity, while also ensuring that soft bit computation is performed for substantially all bits. The method involves computing a first set of soft bits from bits transmitted in a received signal, using a reduced-state trellis with finite non-zero delay, calculating hard decisions in response to the received signal, and also ensuring that substantially all soft bits are computed by employing zero-delay soft decision-making or decision-feedback equalization to compute a second set of soft bits. Furthermore, the hard decisions are used to compute the second set.

4. 发明授权

US08185073B2 Noise/signal estimation for wireless systems 有权
标题翻译：无线系统的噪声/信号估计
公开(公告)号：US08185073B2
公开(公告)日：2012-05-22
申请号：US12292613
申请日：2008-11-21
申请人： Pirkka Silvola , Veli-Pekka Kaasila
发明人： Pirkka Silvola , Veli-Pekka Kaasila
IPC分类号： H04B17/00
CPC分类号： H04B17/345 , H04B17/318
摘要： A method, apparatus, and computer program product, wherein received signal components are determined for a selected group of sub-carriers based on individual noise and signal contributions of the sub-carriers. At least one of noise and a parameter relating to at least one of noise and a signal of a received signal is estimated by combining the determined received signal components depending on a sign of preamble symbols of the sub-carriers.
摘要翻译：一种方法，装置和计算机程序产品，其中基于子载波的单独噪声和信号贡献，为所选择的子载波组确定接收信号分量。通过根据子载波的前导码符号的符号组合所确定的接收信号分量来估计噪声和与接收信号的信号中的至少一个有关的参数中的至少一个。

5. 发明授权

US06717934B1 Wireless telecommunication system having improved recognition of modulation type in GPRS 失效
标题翻译：无线电信系统具有改进的GPRS调制类型识别
公开(公告)号：US06717934B1
公开(公告)日：2004-04-06
申请号：US09425712
申请日：1999-10-22
申请人： Pekka Kaasila , Risto Paatelma
发明人： Pekka Kaasila , Risto Paatelma
IPC分类号： H04B7212
CPC分类号： H04L27/0012
摘要： A method is disclosed for operating a wireless mobile station to receive a time slot sent through a radio channel from a transmitter. In a GPRS embodiment the time slot has a Header portion and a Data portion, wherein the Header portion contains information for specifying whether the Data portion is modulated using 8-PSK modulation or &pgr;/4-shifted DQPSK modulation. When modulated using 8-PSK modulation, the Data portion includes a plurality of Pilot symbol sequences at predetermined locations. The method has steps of (a) estimating the quality of the radio channel using symbol sequences found at the predetermined locations, the symbol sequences being assumed to be Pilot symbol sequences; (b) determining a magnitude of a detection error between assumed transmitted Pilot symbol sequences and the detected symbols found at the predetermined locations; (c) calculating a mean of the detection error powers; (d) comparing the calculated mean of the detection error powers with a threshold value; and (e) selecting the modulation type of the Data portion as being one of 8-PSK or &pgr;/4-shifted DQPSK based on the result of the step of comparing.
摘要翻译：公开了一种用于操作无线移动台以从发射机接收通过无线电信道发送的时隙的方法。在GPRS实施例中，时隙具有报头部分和数据部分，其中标题部分包含用于指定使用8-PSK调制或者pi / 4位移DQPSK调制来调制数据部分的信息。当使用8-PSK调制进行调制时，数据部分在预定位置包括多个导频符号序列。该方法具有以下步骤：（a）使用在预定位置处发现的符号序列来估计无线电信道的质量，假设符号序列为导频符号序列; （b）确定假定发送的导频符号序列与在预定位置处发现的检测符号之间的检测误差的幅度; （c）计算检测误差功率的平均值; （d）将计算的检测误差功率的平均值与阈值进行比较; 和（e）基于比较步骤的结果，将Data部分的调制类型选择为8-PSK或者pi / 4移位DQPSK之一。

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