公开(公告)号：US20150358120A1

公开(公告)日：2015-12-10

申请号：US14758265

申请日：2014-01-16

Applicant: ST-ERICSSON SA

Inventor： Achraf DHAYNI

IPC: H04L1/06 ,  H04L1/00

CPC classification number: H04L1/0643 ,  H04L1/0041 ,  H04L1/0046 ,  H04L1/0057 ,  H04L1/0631 ,  H04L1/0668

Abstract: This invention deals with a method of communication comprising, at transmitting side, encoding, with one or more space time block codes chosen among a predetermined group of space time block codes (M1, M2, M3, M4), one or more series of several consecutive symbols in a header of a packet of data of a same data format (11 to 44), said space time block code or said succession of space time block codes being chosen so as to be representative of said data format (11 to 44).

Abstract translation: 本发明涉及一种通信方法，其包括在发送侧编码与一组或多组空间时间块码（M1，M2，M3，M4）中选择的一个或多个空时码块码， 选择相同数据格式（11至44）的数据分组的报头中的连续符号，所述空时块代码或所述连续的空时块代码被选择为代表所述数据格式（11至44） 。

公开(公告)号：US20160112236A1

公开(公告)日：2016-04-21

申请号：US14787325

申请日：2014-05-16

Applicant: ST-ERICSSON SA

Inventor： Achraf DHAYNI

IPC: H04L27/26

CPC classification number: H04L27/2663 ,  H04L27/2666

Abstract: A method for determining a symbol boundary in a data packet belonging to a received OFDM signal is provided. The data packet includes a first training filed and a second training field, which begins with a guard interval. The method includes detecting the beginning of the data packet, and starting an automatic gain control process. The method further includes, after the automatic gain control process is locked, determining autocorrelation peaks and estimating the symbol boundary from times of the autocorrelation peaks.

Abstract translation: 提供了一种用于确定属于接收的OFDM信号的数据分组中的符号边界的方法。 数据分组包括以保护间隔开始的第一训练场和第二训练场。 该方法包括检测数据包的开始，并开始自动增益控制处理。 该方法还包括在自动增益控制处理被锁定之后，确定自相关峰值并从自相关峰值的时间估计符号边界。

公开(公告)号：US20150312079A1

公开(公告)日：2015-10-29

申请号：US14428022

申请日：2013-10-10

Applicant: ST-ERICSSON SA

Inventor： Achraf DHAYNI

IPC: H04L27/26

CPC classification number: H04L27/2662 ,  H04L27/2657 ,  H04L27/2672

Abstract: It is proposed a method for receiving and demodulating an orthogonal frequency division multiplexing signal received through a transmission channel (TC) by a receiver (RCV), comprising demultiplexing said signal to generate time symbols (yl(n)) and performing a time-to-frequency conversion of these time symbols to generate frequency bins (Yl(k)) corresponding to received symbols, the received symbols comprising preamble symbols. The method comprises: Determining an estimated carrier frequency offset on the basis of frequency bins corresponding to used subcarriers of the preamble symbols; Applying said estimated carrier frequency offset to the time symbols so as to correct the carrier frequency of these received symbols.

Abstract translation: 提出了一种接收和解调由接收机（RCV）通过传输信道（TC）接收的正交频分复用信号的方法，包括解复用所述信号以产生时间符号（yl（n）），并执行时间到 这些时间符号的频率转换以产生与接收符号相对应的频率仓（Y1（k）），所接收的符号包括前导码符号。 该方法包括：基于与所述前导码符号的所使用的子载波相对应的频率块来确定估计的载波频率偏移; 将所述估计的载波频率偏移应用于时间符号，以便校正这些接收符号的载波频率。

公开(公告)号：US20150303994A1

公开(公告)日：2015-10-22

申请号：US14443680

申请日：2013-11-21

Applicant: ST-ERICSSON SA

Inventor： Achraf DHAYNI

IPC: H04B5/00 ,  H04W4/00

CPC classification number: H04B5/0031 ,  H04B5/0081 ,  H04W4/80

Abstract: A method of conditioning a first signal transmitted between a first and a second near field communication, NFC, device, the method comprising: determining a transfer function representative of a distortion arising from transfer of a signal from the first NFC device to the second NFC device; determining a pre-distortion function from the transfer function; and applying the pre-distortion function to the first signal, wherein the pre-distortion function at least partially compensates for the determined transfer function.

Abstract translation: 一种调节在第一和第二近场通信NFC装置之间传输的第一信号的方法，所述方法包括：确定代表从第一NFC设备传送到第二NFC设备的信号所产生的失真的传递函数 ; 从传递函数确定预失真函数; 以及将所述预失真函数应用于所述第一信号，其中所述预失真函数至少部分地补偿所确定的传递函数。

公开(公告)号：US20140349586A1

公开(公告)日：2014-11-27

申请号：US14273650

申请日：2014-05-09

Applicant: ST-Ericsson SA

Inventor： Achraf DHAYNI

IPC: G06F11/27 ,  H04B17/00

CPC classification number: G06F11/27 ,  H04B5/0062 ,  H04B17/00 ,  H04B17/17 ,  H04B17/19

Abstract: The invention proposes a built-in self-testing method of a near field communication device including several functions, comprising testing a first internal communication link between a first function and a second function, by sending, on said first internal communication link, a first command from said first function used as a transmitter to said second function used as a receiver, and by checking said first command has been correctly executed by said second function.

Abstract translation: 本发明提出了一种包括若干功能的近场通信设备的内置自检方法，包括：测试第一功能和第二功能之间的第一内部通信链路，通过在所述第一内部通信链路上发送第一命令 从用作发射机的所述第一功能到用作接收机的所述第二功能，以及通过检查所述第一命令已被所述第二功能正确地执行。

公开(公告)号：US20150372847A1

公开(公告)日：2015-12-24

申请号：US14767960

申请日：2013-11-25

Applicant: ST-Ericsson SA

Inventor： Achraf DHAYNI

IPC: H04L27/26

CPC classification number: H04L27/266 ,  H04L27/265

Abstract: A method and an apparatus determine a time of start of series of OFDM symbols forming an OFDM packet, wherein one or more symbols of the OFDM signal includes a plurality of copies of a short training sequence made of a plurality of time-domain samples. The method includes determining a coarse time index, determining a fine time index, and determining the time of start of each OFDM symbols based on the fine time index. The coarse time-domain sample of the coarse time index is within a coarse estimation error interval, and the time-domain samples of the coarse estimation error interval are converted into frequency domain samples. A metric value is determined for each frequency domain samples, and the fine time index is the time index corresponding to one of the coarse estimation error interval having its associated frequency domain sample having the lowest metric value.

Abstract translation: 一种方法和装置确定形成OFDM分组的一系列OFDM符号的起始时间，其中OFDM信号的一个或多个符号包括由多个时域采样构成的短训练序列的多个副本。 该方法包括：确定粗略时间索引，确定精细时间索引，以及基于精细时间索引确定每个OFDM符号的开始时间。 粗略时间索引的粗时域样本在粗估计误差区间内，粗估计误差区间的时域样本被转换为频域采样。 对于每个频域样本确定度量值，并且精细时间索引是对应于具有具有最低度量值的其相关联的频域采样的粗估计误差间隔之一的时间索引。

公开(公告)号：US20150303997A1

公开(公告)日：2015-10-22

申请号：US14438733

申请日：2013-11-20

Applicant: ST-Ericsson SA

Inventor： Achraf DHAYNI

IPC: H04B5/00 ,  G06K7/10

CPC classification number: H04B5/0062 ,  G06K7/10128 ,  G06K7/10237 ,  G06K7/10297

Abstract: The invention concerns a Near Field Communication method of detection of a tag presence by a tag reader, comprising: stimulating (S2) the transmitter of the reader so as to generate an impulse response of said transmitter, evaluating (S3) the generated impulse response of said transmitter, assessing (S4), from the evaluated impulse response of said transmitter, the presence (S5) or the absence (S6) of a tag.

Abstract translation: 本发明涉及一种用于检测标签读取器的标签存在的近场通信方法，包括：刺激（S2）读取器的发射器以产生所述发射机的脉冲响应，评估（S3）产生的脉冲响应 所述发射机根据所述发射机的评估脉冲响应，评估（S4）标签的存在（S5）或不存在（S6）。

公开(公告)号：US20140086362A1

公开(公告)日：2014-03-27

申请号：US14030305

申请日：2013-09-18

Applicant: ST-Ericsson SA

Inventor： Achraf DHAYNI

IPC: H04B1/10 ,  H04L27/26 ,  H04L25/02

CPC classification number: H04B1/10 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2647 ,  H04L27/2649 ,  H04L27/2691

Abstract: Receiver adapted for determining an estimation of interferences when receiving an OFDM signal made of packets, each packet comprising a first training field, a second training field, at least two header fields and data field, comprising: Means for detecting a first symbol value of a first header fields and a second symbol value of a second header field, said first and second header fields beholding to said at least two header fields and the modulation scheme being different between said first and second header fields; and Means for determining said estimation from said first and second symbol values.

Abstract translation: 接收器，适于在接收到由分组构成的OFDM信号时确定干扰的估计，每个分组包括第一训练场，第二训练场，至少两个报头字段和数据场，包括：用于检测第一符号值 第一标题字段和第二标题字段的第二符号值，所述第一和第二标题字段指向所述至少两个报头字段，并且所述调制方案在所述第一和第二报头字段之间是不同的; 以及用于从所述第一和第二符号值确定所述估计的装置。