公开(公告)号：US20090225822A1

公开(公告)日：2009-09-10

申请号：US12044026

申请日：2008-03-07

申请人： Miika Sakari Tupala ,  Jukka Allan Henriksson ,  Jussi Vesma

发明人： Miika Sakari Tupala ,  Jukka Allan Henriksson ,  Jussi Vesma

IPC分类号： H04B1/707 ,  H04L27/28

CPC分类号： H04L27/2659 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2662 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2678 ,  H04L2027/003 ,  H04L2027/0067 ,  H04L2027/0095 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/6112 ,  H04W28/06

摘要： Systems and methods for receiving an OFDM preamble without knowledge of channel characteristics are provided. An OFDM preamble signal with frequency shifted cyclic extensions is received. Taken together the cyclic extensions form a frequency shifted version of the OFDM preamble signal. Frequency offsets and timing offsets are estimated and corrected in an efficient manner using a simple concatenation approach in the time domain, followed by a summation of the OFDM preamble signal and the concatenation after a transformation of the OFDM preamble and the concatenation into the frequency domain. Phase errors in the frequency domain are estimated and corrected after FFT transformations of the received signals. A valid preamble is detected and additional parameters for receiving subsequently transmitted OFDM symbols in a channel are extracted from the OFDM preamble. The methods are computationally efficient and robust. Receiver implementations for performing the methods in a DVB receiver are disclosed.

摘要翻译： 提供了不知道信道特性的用于接收OFDM前同步码的系统和方法。 接收具有频移循环扩展的OFDM前导码信号。 将循环扩展合并在一起形成OFDM前导码信号的频移版本。 使用时域中的简单级联方法以频率偏移和定时偏移来估计和校正频率偏移量，然后在OFDM前导信号和OFDM前导码的变换和频域之间的级联之后进行总和。 在接收到的信号的FFT变换之后，对频域中的相位误差进行估计和校正。 检测有效的前导码，并且从OFDM前导码中提取用于在信道中接收随后发送的OFDM符号的附加参数。 该方法具有计算效率和鲁棒性。 公开了用于在DVB接收机中执行方法的接收机实现。

公开(公告)号：US20090203326A1

公开(公告)日：2009-08-13

申请号：US12030657

申请日：2008-02-13

申请人： Jussi Vesma ,  Harri J. Pekonen ,  Jani Vare

发明人： Jussi Vesma ,  Harri J. Pekonen ,  Jani Vare

IPC分类号： H04B7/00

CPC分类号： H04H60/73 ,  H04H20/426

摘要： Embodiments are directed to transmitting receiver-capacity-signalling data that specifies a plurality of receiver capacities to be used for receiving a service. The signalled receiver capacities may include: a type of time interleaver being used and a minimum burst interval between two consequent bursts. The signaled receiver capacities may also specify: how often a physical layer pipe appears in frames, and/or a number of a frame in which a physical layer pipe appears for a first time during a super frame. Embodiments are directed to receiving the receiver-capacity-signalling data and if, based on the received receiver-capacity-signalling data, receiver capacity is sufficient for one or more selected services, performing service discovery and decoding the one or more services. Otherwise, decoding the one or more services may not be performed.

摘要翻译： 实施例涉及发送指定要用于接收服务的多个接收机容量的接收机容量信令数据。 信号接收器容量可以包括：正在使用的时间交织器的类型和两个后续突发之间的最小突发间隔。 有信号的接收机容量还可以指定物理层管道出现在帧中的频率，和/或物理层管道在超帧期间第一次出现的帧的数量。 实施例涉及接收接收机容量信令数据，并且如果基于所接收的接收机容量信令数据，接收机容量对于一个或多个所选择的服务是足够的，则执行服务发现和解码所述一个或多个服务。 否则，可能不执行对一个或多个服务的解码。

公开(公告)号：US20090187949A1

公开(公告)日：2009-07-23

申请号：US12017242

申请日：2008-01-21

申请人： Jani Vare ,  Jussi Vesma

发明人： Jani Vare ,  Jussi Vesma

IPC分类号： H04N5/445

CPC分类号： H04L5/0053 ,  H04L5/0094

摘要： Aspects of the invention are directed to a cell-frequency-link descriptor configured to map network-specific parameters with time frequency slicing (TFS) information in a digital video broadcast system. The cell-frequency-link descriptor may include fields that provide a mapping between a cell identifier, a TFS group identifier, a bandwidth, a guard interval, a transmission mode, and a frequency. The fields may provide a mapping between cells, frequencies, TFS groups, related guard intervals, bandwidths, and transmission modes for multiple cells within the digital video broadcast system. The fields may include: a cell identifier field, a TFS-group identifier field, a bandwidth field, a guard interval field, a transmission mode field, a frequency field, a cell identifier extension field, and a transposer frequency field.

摘要翻译： 本发明的方面涉及一种细胞 - 频率 - 链路描述符，其被配置为在数字视频广播系统中将具有时间频率分割（TFS）信息的网络特定参数映射。 小区 - 频率 - 链路描述符可以包括提供小区标识符，TFS组标识符，带宽，保护间隔，传输模式和频率之间的映射的字段。 这些字段可以提供数字视频广播系统内的多个小区的小区，频率，TFS组，相关的保护间隔，带宽和传输模式之间的映射。 这些字段可以包括：小区标识符字段，TFS组标识符字段，带宽字段，保护间隔字段，传输模式字段，频率字段，小区标识符扩展字段和转置器频率字段。

公开(公告)号：US20090103651A1

公开(公告)日：2009-04-23

申请号：US11874359

申请日：2007-10-18

申请人： Jyrki Lahtonen ,  Jussi Vesma ,  Miika Tupala

发明人： Jyrki Lahtonen ,  Jussi Vesma ,  Miika Tupala

IPC分类号： H04L27/20 ,  H04L27/22

CPC分类号： H04L27/2613 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2331 ,  H04L27/2659 ,  H04L27/2675 ,  H04L27/2685

摘要： Embodiments are directed to binary phase shift key modulating a first pilot symbol according to a reference sequence, and differentially binary phase shift key modulating a second pilot symbols. The original reference sequence and the delayed differentially modulated sequence are then combined before performing an Inverse Fast Fourier Transform and inserting a guard interval. Receiver operations are an inverse of the transmitter operations, which were just discussed. The receiver does not have to know the reference sequence. Embodiments are directed to specifying a plurality of seeds that are bit patterns each having r bits not all of which have a value of zero, extending the seeds into respective sequences by applying to each seed a recurrence formula; and using one of the sequences as a comb sequence and using the sequences other than the comb sequence as binary phase shift keying patterns.

摘要翻译： 实施例涉及根据参考序列调制第一导频符号的二进制相移键，以及调制第二导频符号的差分二进制相移键。 然后在执行快速傅立叶逆变换和插入保护间隔之前组合原始参考序列和延迟差分调制序列。 接收机操作是发射机操作的倒数，这些操作刚刚讨论过。 接收器不必知道参考序列。 实施例涉及指定多个种子，其是每个具有r位的位模式，并不都具有零值，通过向每个种子应用递归公式将种子延伸到各个序列中; 并使用序列之一作为梳状序列，并使用除了梳状序列以外的序列作为二进制相移键控模式。

公开(公告)号：US08675752B2

公开(公告)日：2014-03-18

申请号：US13239465

申请日：2011-09-22

申请人： Jyrki Lahtonen ,  Jussi Vesma ,  Miika Tupala

发明人： Jyrki Lahtonen ,  Jussi Vesma ,  Miika Tupala

IPC分类号： H04L27/28

CPC分类号： H04L27/2613 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2331 ,  H04L27/2659 ,  H04L27/2675 ,  H04L27/2685

摘要： Embodiments are directed to binary phase shift key modulating a first pilot symbol according to a reference sequence, and differentially binary phase shift key modulating a second pilot symbols. The original reference sequence and the delayed differentially modulated sequence are then combined before performing an Inverse Fast Fourier Transform and inserting a guard interval. Receiver operations are an inverse of the transmitter operations, which were just discussed. The receiver does not have to know the reference sequence. Embodiments are directed to specifying a plurality of seeds that are bit patterns each having r bits not all of which have a value of zero, extending the seeds into respective sequences by applying to each seed a recurrence formula; and using one of the sequences as a comb sequence and using the sequences other than the comb sequence as binary phase shift keying patterns.

摘要翻译： 实施例涉及根据参考序列调制第一导频符号的二进制相移键，以及调制第二导频符号的差分二进制相移键。 然后在执行快速傅立叶逆变换和插入保护间隔之前组合原始参考序列和延迟差分调制序列。 接收机操作是发射机操作的倒数，这些操作刚刚讨论过。 接收器不必知道参考序列。 实施例涉及指定多个种子，其是每个具有r位的位模式，并不都具有零值，通过向每个种子应用递归公式将种子延伸到各个序列中; 并使用序列之一作为梳状序列，并使用除了梳状序列以外的序列作为二进制相移键控模式。

公开(公告)号：US08599884B2

公开(公告)日：2013-12-03

申请号：US12047231

申请日：2008-03-12

申请人： Harri J. Pekonen ,  Tommi Auranen ,  Jussi Vesma ,  Jani Väre

发明人： Harri J. Pekonen ,  Tommi Auranen ,  Jussi Vesma ,  Jani Väre

IPC分类号： H04L12/26

CPC分类号： H04W72/005 ,  H04L1/0041 ,  H04L1/0075 ,  H04W72/1257 ,  Y02D70/168

摘要： A system and method for implementing optimized multiplexing and power saving in a broadcast/multicast network. According to various embodiments, frame and slot structures are designed in such a way so as to adapt based upon the bit rate variation of the input stream, while at the same time not compromising the receiver's power consumption.

摘要翻译： 一种用于在广播/组播网络中实现优化的复用和省电的系统和方法。 根据各种实施例，以这样的方式设计帧和时隙结构，以便基于输入流的比特率变化来适应，同时不损害接收机的功率消耗。

公开(公告)号：US08498262B2

公开(公告)日：2013-07-30

申请号：US12030657

申请日：2008-02-13

申请人： Jussi Vesma ,  Harri J. Pekonen ,  Jani Vare

发明人： Jussi Vesma ,  Harri J. Pekonen ,  Jani Vare

IPC分类号： H04W4/00

CPC分类号： H04H60/73 ,  H04H20/426

摘要： Embodiments are directed to transmitting receiver-capacity-signalling data that specifies a plurality of receiver capacities to be used for receiving a service. The signalled receiver capacities may include: a type of time interleaver being used and a minimum burst interval between two consequent bursts. The signaled receiver capacities may also specify: how often a physical layer pipe appears in frames, and/or a number of a frame in which a physical layer pipe appears for a first time during a super frame. Embodiments are directed to receiving the receiver-capacity-signalling data and if, based on the received receiver-capacity-signalling data, receiver capacity is sufficient for one or more selected services, performing service discovery and decoding the one or more services. Otherwise, decoding the one or more services may not be performed.

摘要翻译： 实施例涉及发送指定要用于接收服务的多个接收机容量的接收机容量信令数据。 信号接收器容量可以包括：正在使用的时间交织器的类型和两个后续突发之间的最小突发间隔。 有信号的接收机容量还可以指定物理层管道出现在帧中的频率，和/或物理层管道在超帧期间第一次出现的帧的数量。 实施例涉及接收接收机容量信令数据，并且如果基于所接收的接收机容量信令数据，接收机容量对于一个或多个所选择的服务是足够的，则执行服务发现和解码所述一个或多个服务。 否则，可能不执行对一个或多个服务的解码。

公开(公告)号：US20120201285A1

公开(公告)日：2012-08-09

申请号：US13020168

申请日：2011-02-03

申请人： Sergei Semenov ,  Kjell Ostman ,  Andre Malkov ,  Jussi Vesma ,  Risto Paatelma

发明人： Sergei Semenov ,  Kjell Ostman ,  Andre Malkov ,  Jussi Vesma ,  Risto Paatelma

IPC分类号： H04L27/01 ,  H04B17/00

CPC分类号： H04B17/336

摘要： In an example embodiment a method comprises receiving at least one data stream from at least two transmitter antennas, wherein the at least one data stream is pre-coded by a set of weighting coefficients; receiving a pilot channel from each of the at least two transmitter antennas; processing the received at least one data stream by an equalizer with a set of equalizer filter coefficients; calculating for each of the at least one data stream following: a signal power and an interference power from other stream, if there is any intererence, at least in part based on a set of post equalizer channel coefficients and the set of weighting coefficients; a noise power at least in part based on the received pilot channels and the set of weighting coefficients; and a signal to interference and noise ratio based on the corresponding calculated signal power, interference power and noise power.

摘要翻译： 在示例实施例中，一种方法包括从至少两个发射机天线接收至少一个数据流，其中所述至少一个数据流被一组加权系数预编码; 从所述至少两个发射机天线中的每一个接收导频信道; 通过均衡器处理所接收的至少一个数据流与一组均衡器滤波器系数; 至少部分地基于一组后均衡器信道系数和所述加权系数集合来计算所述至少一个数据流中的每一个，其中：来自其他流的信号功率和干扰功率，如果存在任何干扰， 至少部分地基于所接收的导频信道和所述一组加权系数的噪声功率; 并且基于相应的计算出的信号功率，干扰功率和噪声功率的信号与干扰和噪声比。

公开(公告)号：US08213383B2

公开(公告)日：2012-07-03

申请号：US12204750

申请日：2008-09-04

申请人： Harri J. Pekonen ,  Heidi Himmanen ,  Jani Väre ,  Jussi Vesma ,  Pekka Talmola

发明人： Harri J. Pekonen ,  Heidi Himmanen ,  Jani Väre ,  Jussi Vesma ,  Pekka Talmola

IPC分类号： H04W4/00 ,  H04J3/06 ,  H04B1/40 ,  H01Q11/12

CPC分类号： H04L27/2626 ,  H04H20/26 ,  H04H20/33 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2662

摘要： A system and method is provided for ensuring that time for tuning to another RF channel between two TF frames in TF slicing exists while reception with a single hopping-tuner is enabled, and reception for terminals can be guaranteed when transmitting and receiving common services. An additional time for tuning is introduced for TF-sliced services, where the time for tuning can be inserted either before of after the P1 & P2 symbols, and the symbols allocated for the tuning time can also be used for transmission of low-bit rate services. Alternatively, additional padding bits and a guard period can be added in the event that slots or slot fragments exceed a cyclic transfer border upon time shifting. Alternatively still, the tuning time is represented by a complete TF frame, where the complete TF frame carries services other than those in the first TF frame, so that a service is transmitted in every second TF frame and a receiver can perform tuning during the TF frames which do not carry the service.

摘要翻译： 提供了一种系统和方法，用于确保在使用单跳频调谐器的接收时存在用于在TF切片中的两个TF帧之间调谐到另一RF信道的时间，并且当发送和接收公共服务时可以保证终端的接收。 为TF分片服务引入了一个额外的调谐时间，其中可以在P1和P2符号之前插入调谐时间，并且为调谐时间分配的符号也可以用于传输低比特率 服务。 或者，在时隙或时隙片段在时移时超过循环传输边界的情况下，可以添加额外的填充比特和保护周期。 或者，调谐时间由完整的TF帧表示，其中完整的TF帧承载不同于第一TF帧中的服务的服务，使得在每秒TF帧中发送服务，并且接收机可以在TF期间执行调谐 不携带服务的帧。

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。