公开(公告)号：US08130631B2

公开(公告)日：2012-03-06

申请号：US12637271

申请日：2009-12-14

申请人： Jukka Henriksson ,  Miika Tupala ,  Jussi Vesma

发明人： Jukka Henriksson ,  Miika Tupala ,  Jussi Vesma

IPC分类号： H04J11/00 ,  H04J9/00 ,  H04J3/06 ,  H04L5/04

CPC分类号： H04L27/2675 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2657

摘要： Embodiments are directed to first and second OFDM pilot symbols. The first and second pilot symbols may have first and second sets, respectively, of allowed, forbidden, and active carrier frequencies. The second sets of carrier frequencies may be formed by frequency shifting the respective first sets by a predetermined frequency, such as the frequency difference between adjacent carriers. An embodiment is directed to frequency translating part of a first received pilot symbol by one carrier interval in a first direction, frequency translating part of a second received pilot symbol by one carrier interval in a second direction that is opposite from the first direction, and forming a correlation by multiplying the frequency translated parts of the first and second pilot symbols by complex conjugates of parts of the pilot symbols upon which frequency translation has not been performed, and summing the multiplication results.

摘要翻译： 实施例涉及第一和第二OFDM导频符号。 第一和第二导频符号可以分别具有允许，禁止和有效载波频率的第一和第二组。 第二组载波频率可以通过将相应的第一组频移到预定频率（例如相邻载波之间的频率差）来形成。 实施例涉及将第一接收导频符号的一部分频率转换为第一方向上的一个载波间隔，将第二接收导频符号的一部分频率平移到与第一方向相反的第二方向上的一个载波间隔，以及形成 通过将第一和第二导频符号的频率转换部分乘以不进行频率转换的导频符号的部分的复共轭并将乘法结果求和来进行相关。

公开(公告)号：US20100120467A1

公开(公告)日：2010-05-13

申请号：US12530296

申请日：2007-03-08

申请人： Tommi Auranen ,  Harri J. Pekonen ,  Jussi Vesma ,  Jani Petteri Vare ,  Pekka Talmola ,  Jukka Henriksson ,  Visa Koivunen

发明人： Tommi Auranen ,  Harri J. Pekonen ,  Jussi Vesma ,  Jani Petteri Vare ,  Pekka Talmola ,  Jukka Henriksson ,  Visa Koivunen

IPC分类号： H04W88/06

CPC分类号： H04L27/2647 ,  H04L27/2602 ,  H04N21/41407 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/64315

摘要： In a digital broadband broadcast transmitter, digital data is time interleaved for transmission, and the time interleaved digital data is transmitted in a digital broadband broadcast transmission towards a plurality of receivers. A cellular transmitter is operated in an apparatus. In the same apparatus, the digital broadband broadcast transmission transmitted by the digital broadband broadcast transmitter is received, and the received digital broadband broadcast transmission is time deinterleaved.

摘要翻译： 在数字宽带广播发射机中，数字数据被时间交织以用于传输，并且时间交织的数字数据在数字宽带广播传输中向多个接收机传输。 蜂窝发射机在设备中操作。 在同一设备中，接收由数字宽带广播发射机发送的数字宽带广播传输，接收到的数字宽带广播传输是时间去交织的。

公开(公告)号：US06374385B1

公开(公告)日：2002-04-16

申请号：US09318247

申请日：1999-05-25

申请人： Ari Hämäläinen ,  Jukka Henriksson

发明人： Ari Hämäläinen ,  Jukka Henriksson

IPC分类号： H03M1303

CPC分类号： H03M13/6516 ,  H03M13/23 ,  H03M13/39 ,  H03M13/41 ,  H03M13/6597

摘要： The invention relates to a method and an arrangement for decoding a convolutionally encoded signal which comprises code words and the arrangement comprises a neural network which comprises a set of neurons comprising a set of inputs and an output. The received code words are applied to the inputs of the neurons, and the arrangement combines some of the inputs of the neuron in the neuron. In order to enable efficient decoding of the convolutional encoding, some of the output signals of the neural network neurons are fed back to the inputs of the neuron and the neuron multiplies at least some of the inputs of the neuron with one another before combining. The output signal of a predetermined neuron comprises an estimate of a decoded symbol.

摘要翻译： 本发明涉及用于解码包括码字的卷积编码信号的方法和装置，并且该装置包括神经网络，神经网络包括一组包括一组输入和输出的神经元。 接收到的码字被应用于神经元的输入，并且该装置将神经元中的神经元的一些输入结合在一起。 为了能够进行卷积编码的有效解码，将神经网络神经元的一些输出信号反馈给神经元的输入，并且神经元在组合之前将神经元的至少一些输入彼此相乘。 预定神经元的输出信号包括解码符号的估计。

公开(公告)号：US5828701A

公开(公告)日：1998-10-27

申请号：US636056

申请日：1996-04-22

申请人： Jukka Henriksson

发明人： Jukka Henriksson

IPC分类号： H04L25/03 ,  H03H7/30 ,  H03H7/40

CPC分类号： H04L25/03057

摘要： The invention is related to a method and circuit arrangement for compensating for delayed components of a received transmission signal especially in a digital transmission system based on physical lines. The method and arrangement utilize a decision feedback equalizer, wherein the weighted sum of decisions based on earlier samples is subtracted from a sample. According to the invention, delayed components in the signal are measured in a measuring unit (11). The earlier decisions to be subtracted from a signal sample are selected from a predetermined group of consecutive decisions, and the strength of the delay component in the delay between each decision and the signal sample is used as a selection criterion. Advantageously, the equalizer according to the invention includes a selector (8) which connects some of the taps of the delay line (7) to multiplier units (9). By means of this method and arrangement it is possible to implement with a small number of multiplier units an equalizer capable of compensating for delayed components with long delays.

摘要翻译： 本发明涉及用于补偿接收的传输信号的延迟分量的方法和电路装置，特别是在基于物理线路的数字传输系统中。 该方法和装置利用判决反馈均衡器，其中从样本中减去基于较早样本的判定的加权和。 根据本发明，在测量单元（11）中测量信号中的延迟分量。 从预定的连续判定组中选择要从信号样本中减去的较早的决定，并且将每个决定与信号样本之间的延迟中的延迟分量的强度用作选择标准。 有利地，根据本发明的均衡器包括将延迟线（7）的一些抽头连接到乘法器单元（9）的选择器（8）。 通过该方法和装置，可以用少量的乘法器单元实现能够以长延迟补偿延迟分量的均衡器。

公开(公告)号：US5128965A

公开(公告)日：1992-07-07

申请号：US611111

申请日：1990-11-09

申请人： Jukka Henriksson

发明人： Jukka Henriksson

IPC分类号： H01L27/00 ,  H04B7/005 ,  H04B7/15 ,  H04L27/00 ,  H04L27/36

CPC分类号： H04W52/20 ,  H04W52/12 ,  Y02B60/50

摘要： The invention relates to a digital radio link system and a method of adjusting the transmission power in a digital radio link system. The system comprises at a receiving end a first means for monitoring the error rate estimate and for producing a first control signal if the error rate estimate exceeds a predetermined threshold value. At a transmitting end the system comrises means for adjusting the transmission power, said means responding to the occurrence of the first control signal by increasing the transmission power. In the system of the invention there is further provided at the receiving end a second means for monitoring the rate of change of the received signal level and for producing a second control signal if the rate of change exceeds a predetermined threshold value. The means for adjusting the transmission power respond to the occurrence of the first or the second control signal by increasing the transmission power temporarily close to the maximum transmission power.

公开(公告)号：US20060116095A1

公开(公告)日：2006-06-01

申请号：US10517937

申请日：2002-06-20

申请人： Jukka Henriksson

发明人： Jukka Henriksson

IPC分类号： H04B1/10

CPC分类号： H04L1/0065 ,  H04L1/0045 ,  H04L5/0044 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2691 ,  H04L2027/0077

摘要： Method and system for reducing impulsive burst noise in less delayed reception in pilot based OFDM systems, especially using DVB-T standard such as Digital Video Broadcasting (DVB) is provided. The method contains following steps: 1) recognition of the impulse position and possibly length in the time domain symbol, 2) blanking of those samples of the symbol where significant amount of impulse noise is present, 3) calculating the first estimate of the received signal from the blanked symbol, 4) deriving correction values for the carrier estimates by applying prior information (pilot carriers), and 5) the corrected estimate of the received symbol is derived by subtracting the correction values of step 4 from the first estimate of carriers derived in step 3. The method and arrangement allow correction of fairly long bursts of impulse noise with minor degradation only. The complexity of the scheme and the additional energy consumption are fairly low. The method provides considerably more effective more simple and less delay in broadcast data reception than previously known solutions in interfered multi-carrier signal reception.

摘要翻译： 提供了一种用于在基于导频的OFDM系统中更少延迟接收中减少脉冲突发噪声的方法和系统，特别是使用诸如数字视频广播（DVB）的DVB-T标准。 该方法包括以下步骤：1）识别时域符号中的脉冲位置和可能的长度，2）消除具有显着量的脉冲噪声的符号的那些样本，3）计算接收信号的第一估计 4）通过应用先验信息（导频载波）导出用于载波估计的校正值，以及5）通过从导出的载波的第一估计中减去步骤4的校正值来导出接收符号的校正估计 在步骤3中。该方法和装置允许校正相当长的脉冲噪声突发，并且只有较小的降级。 该计划的复杂性和额外的能源消耗相当低。 广播数据接收中的方法比干扰多载波信号接收中的先前已知的解决方案提供了更加有效的更简单和更少的延迟。

公开(公告)号：US20060062314A1

公开(公告)日：2006-03-23

申请号：US10522689

申请日：2002-08-13

申请人： Arto Palin ,  Jukka Henriksson

发明人： Arto Palin ,  Jukka Henriksson

IPC分类号： H04K1/10

CPC分类号： H04L1/0041 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0032 ,  H04L1/0038 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

摘要： The invention relates to a method for communicating digital data using an orthogonal frequency division multiplexing (OFDM) transmission system (10) including at least one transmitter (600, 601) and receivers (700, 701). The method comprises selecting a mode of operation in a transmitter among at least one mode, each mode of operation being associated with a number of active carriers for payload data transmission, selecting a symbol interleaver in the transmitter from a set of symbol interleavers for symbol interleaving in said selected mode of operation, applying symbol interleaving in the transmitter on blocks of data units, mapping the interleaved data units onto the active carriers of said selected mode of operation, receiving the interleaved data units in the receiver, recognizing in the receiver the symbol interleaver used in the data transmission, selecting a de-interleaver in the receiver to correspond to the recognized symbol interleaver, and de-interleaving in the receiver the received data units using the selectedde-interleaver.

摘要翻译： 本发明涉及使用包括至少一个发射机（600,601）和接收机（700,701）的正交频分复用（OFDM）传输系统（10）来传送数字数据的方法。 该方法包括在至少一种模式中选择发射机中的操作模式，每个操作模式与用于有效载荷数据传输的多个活动载波相关联，从用于符号交织的一组码元交织器中选择发射机中的符号交织器 在所述选择的操作模式中，在数据单元块上的发射机中应用符号交织，将交织的数据单元映射到所述选择的操作模式的有效载波上，接收接收机中的交错数据单元，在接收机中识别符号 在数据传输中使用的交织器，在接收机中选择解交织器以对应于识别的符号交织器，以及使用所选择的交织器在接收机中解交织所接收的数据单元。

公开(公告)号：US4731801A

公开(公告)日：1988-03-15

申请号：US795239

申请日：1985-11-05

申请人： Jukka Henriksson

发明人： Jukka Henriksson

IPC分类号： H04L27/38 ,  H04L1/02 ,  H04L27/22 ,  H04B1/10

CPC分类号： H04L1/02

摘要： Described herein is a method for the reception and the detection of digital signals. According to the method at least two signals (s.sub.1, s.sub.2, . . . , s.sub.M) having at least approximately the same information content are received and out of each received signal (S.sub.i) is generated by means of a phase shift one in-phase baseband signal (s.sub.iI) and one quadrature baseband signal (s.sub.iQ). All in-phase baseband signals (s.sub.iI) are summed in a first summing point (3a) and all quadrature baseband signals (s.sub.iQ) in a second summing point (3b), both sum signals (y.sub.Ik and y.sub.Qk) are fed to a detector (4) for detection and generating two detected output signals (s.sub.Ik and s.sub.Qk), and a reference carrier (ca) is generated as a function of said two sum signals (y.sub.Ik and y.sub.Qk) for carrying out a coherent demodulation. According to the invention a projection voltage (z.sub.k) defined by the equation z.sub.k =y.sub.Qk s.sub.Ik -y.sub.Ik s.sub. Qk is generated, wherein y.sub.Ik is a signal sample in the in-phase branch before threshold decision in the detector, y.sub.Qk is the signal sample in the quadrature branch before decision, s.sub.Ik is the detected signal in the in-phase branch, and s.sub.Qk is the detected signal in the quadrature branch.

摘要翻译： 这里描述了一种用于接收和检测数字信号的方法。 根据该方法，接收具有至少近似相同信息内容的至少两个信号（s1，s2，...，sM），并且通过相移一个同相产生每个接收信号（Si） 基带信号（siI）和一个正交基带信号（siQ）。 所有同相基带信号（siI）在第一求和点（3a）中相加，并且在第二求和点（3b）中的所有正交基带信号（siQ），两个和信号（yIk和yQk）被馈送到检测器 4），用于检测和产生两个检测到的输出信号（sIk和sQk），并且作为用于执行相干解调的所述两个和信号（yIk和yQk）的函数产生参考载波（ca）。 根据本发明，生成由方程zk = yQksIk-yIksQk定义的投影电压（zk），其中yIk是在检测器中阈值判定之前的同相分支中的信号样本，yQk是正交中的信号样本 在决定之前分支，sIk是同相分支中的检测信号，sQk是正交分支中检测到的信号。

公开(公告)号：US08243659B2

公开(公告)日：2012-08-14

申请号：US11686661

申请日：2007-03-15

申请人： Jukka Henriksson ,  Jussi Vesma ,  Jani Väre ,  Harri J. Pekonen ,  Tommi Auranen ,  Pekka Talmola

发明人： Jukka Henriksson ,  Jussi Vesma ,  Jani Väre ,  Harri J. Pekonen ,  Tommi Auranen ,  Pekka Talmola

IPC分类号： H04W4/00

CPC分类号： H04H20/30 ,  H04H20/42 ,  H04H20/65 ,  H04H40/27 ,  Y02D70/142 ,  Y02D70/168

摘要： The invention is directed to efficient transfer of low bit rate services in a communication system. A synchronization symbol which has known characteristics may be included as a first symbol of digital broadcast frames. The synchronization symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. Low bit rate services are allocated to time slots following the pilot symbol used for synchronization allowing for fast access times with maximum power saving capabilities. A user terminal wakes up just before the synchronization symbol and received the data allocated for the low bit rate services. The user terminal may power off for the remaining time slots which are allocated for higher bit services to conserve power.

摘要翻译： 本发明涉及在通信系统中低比特率服务的有效传输。 可以包括具有已知特征的同步符号作为数字广播帧的第一符号。 可以解码而不必诉诸试验和误差方法的同步符号包含信号其余部分的参数。 低比特率服务被分配到用于同步的导频符号之后的时隙，允许具有最大功率节省能力的快速接入时间。 用户终端在同步符号之前醒来并接收分配给低比特率服务的数据。 用户终端可以为分配给较高位服务的剩余时隙断电以节省功率。

公开(公告)号：US07620111B2

公开(公告)日：2009-11-17

申请号：US10522689

申请日：2002-08-13

申请人： Arto Palin ,  Jukka Henriksson

发明人： Arto Palin ,  Jukka Henriksson

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L1/0041 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0032 ,  H04L1/0038 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647

摘要： The invention relates to a method for communicating digital data using an orthogonal frequency division multiplexing (OFDM) transmission system (10) including at least one transmitter (600, 601) and receivers (700, 701). The method comprises selecting a mode of operation in a transmitter among at least one mode, each mode of operation being associated with a number of active carriers for payload data transmission, selecting a symbol interleaver in the transmitter from a set of symbol interleavers for symbol interleaving in said selected mode of operation, applying symbol interleaving in the transmitter on blocks of data units, mapping the interleaved data units onto the active carriers of said selected mode of operation, receiving the interleaved data units in the receiver, recognizing in the receiver the symbol interleaver used in the data transmission, selecting a de-interleaver in the receiver to correspond to the recognized symbol interleaver, and de-interleaving in the receiver the received data units using the selected de-interleaver.

摘要翻译： 本发明涉及使用包括至少一个发射机（600,601）和接收机（700,701）的正交频分复用（OFDM）传输系统（10）来传送数字数据的方法。 该方法包括在至少一种模式中选择发射机中的操作模式，每个操作模式与用于有效载荷数据传输的多个活动载波相关联，从用于符号交织的一组码元交织器中选择发射机中的符号交织器 在所述选择的操作模式中，在数据单元块上的发射机中应用符号交织，将交织的数据单元映射到所述选择的操作模式的有效载波上，接收接收机中的交错数据单元，在接收机中识别符号 在数据传输中使用的交织器，在接收机中选择解交织器以对应于识别的符号交织器，以及使用所选择的解交织器在接收机中对接收到的数据单元进行解交织。