公开(公告)号：EP2317712A1

公开(公告)日：2011-05-04

申请号：EP10188991.3

申请日：2010-10-27

Applicant: STMicroelectronics S.r.l.

Inventor： Siti, Massimiliano ,  Assalini, Antonio ,  Pupolin, Silvano

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L27/2649 ,  H04B7/0456 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/024

Abstract: The time-variant channel estimation in an OFDM transmission system envisages the operations of:
a) determining the received signal vector Y j,k for one or more of R receiving antennas, j = 1,..., R, and at the current time instant k together with the frequency-domain channel-estimate vector Ĥ j,k -1 at a preceding time instant k-1 and for each antenna j of one or more of R receiving antennas;
b) producing a first estimate  k of the transmitted digital symbols at the current time instant k on the basis of the aforesaid frequency-domain channel-estimate vectors Ĥ j,k -1 at the preceding time instant k-1;
c) computing an updated version of the frequency-domain channel-estimate vectors Ĥ j,k at the current time instant k and for each antenna j of one or more of R receiving antennas on the basis of the received signal vectors Y j,k at the current time instant k and for each antenna j of one or more of R receiving antennas, using the aforesaid estimate  k of the transmitted digital symbols at the current time instant k as set of known transmitted digital symbols;
d) using the aforesaid updated version of the frequency-domain channel-estimate vectors Ĥ j,k at the current time instant k and for each antenna j of one or more of R receiving antennas, for equalizing (414) the paths of the transmission channel (20, 22) and decoding the received signal vectors Y j,k at the current time instant k and for each antenna j of one or more of R receiving antennas; and
e) storing (412) the updated versions of the channel-estimate vectors for using them in steps a) and b) at the next time instant k+1.

Abstract translation: OFDM传输系统中的时变信道估计设想了以下操作：a）确定R个接收天线中的一个或多个接收信号矢量Y j，k，j = 1，...，R，并且在当前 时刻k与前一时刻k-1处的频域信道估计向量H j，k -1和R个接收天线中的一个或多个的每个天线j一起; b）基于前一时刻k-1处的上述频域信道估计向量H j，k -1产生当前时刻k发送的数字符号的第一估计A k; c）基于接收信号矢量Y j，k计算当前时刻k的频域信道估计向量H j，k的一个或多个的接收天线的每个天线j的更新版本 在当前时刻k和对于R个接收天线中的一个或多个的每个天线j，使用在当前时刻k的所发射的数字符号的上述估计A k作为已知发射数字符号的集合; d）使用上述更新版本的当前时刻k的频域信道估计向量H j，k和R个接收天线中的一个或多个的每个天线j，以均衡（414）传输路径 信道（20,22），并且对当前时刻k的接收信号矢量Y j，k以及R个接收天线中的一个或多个的每个天线j进行解码; 以及e）在下一个时刻k + 1的步骤a）和b）中存储（412）用于使用它们的信道估计向量的更新版本。

公开(公告)号：EP2293483A2

公开(公告)日：2011-03-09

申请号：EP10174589.1

申请日：2010-08-31

Applicant: STMicroelectronics S.r.l. ,  Politecnico Di Milano

Inventor： Siti, Massimiliano ,  Cupaiuolo, Teo ,  Tomasoni, Alessandro ,  Bellini, Sandro

IPC: H04L1/06 ,  H04L25/02

CPC classification number: H04L25/0202 ,  H04L1/06 ,  H04L25/03184 ,  H04L25/03267 ,  H04L25/03286 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: An embodiment of a method and device for detecting a signal and generating bit soft-output of a multiple-input multiple-output system is provided.
The device includes at least one channel estimates pre-processing unit, one received vector processing and one detection and soft-output generation unit.
The pre-processing unit calculates multiple QR Decompositions of the input channel estimation matrix.
The detection and soft-output generation unit computes near optimal bit soft output information with a deterministic complexity and latency.
It may implement a reduced complexity search method.
Globally, embodiments of the invention may allow achieving low complexity, high data rate, scalability in terms of the dimension of the MIMO system and flexibility versus the supported modulation order, all potentially key factors for most MIMO wireless transmission applications.

Abstract translation: 提供了用于检测的信号，并且生成位的多输入多输出系统的软输出的方法和装置的实施例。 该装置包括至少一个信道估计前处理部，一个接收到的矢量处理和一个检测和软输出产生单元。 预处理单元计算输入信道估计矩阵的多个QR分解。 检测和软输出生成单元计算与附近确定性的复杂性和延迟最佳比特软输出信息。 它可以实现降低复杂度的搜索方法。 在全球范围内，本发明的实施例可以允许在MIMO系统和灵活性相对于支持的调制顺序的尺寸方面实现低复杂度，高数据速率，可扩展性，所有潜在的关键因素为最MIMO无线传输应用。

公开(公告)号：EP1257064B1

公开(公告)日：2008-11-19

申请号：EP01111406.3

申请日：2001-05-10

Applicant: STMicroelectronics S.r.l.

Inventor： Ferrari, Marco, c/o CNR-CSTS, Dip. Elettronica ,  Siti, Massimiliano ,  Valle, Stefano ,  Osnato, Fabio ,  Scalise, Fabio

IPC: H03M13/27 ,  H03M13/00 ,  H03M13/29

CPC classification number: H03M13/2957 ,  H03M13/2746 ,  H03M13/2771 ,  H03M13/2789

公开(公告)号：EP1971063A1

公开(公告)日：2008-09-17

申请号：EP08152722.8

申请日：2008-03-13

Applicant: STMicroelectronics S.r.l. ,  Politecnico di Milano

Inventor： Siti, Massimiliano ,  Tomasoni, Alessandro ,  Ferrari, Marco Pietro ,  Bellini, Sandro ,  Volpatti, Oscar

IPC: H04L1/00 ,  H04L25/03

CPC classification number: H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

Abstract: An embodiment of an arrangement for detecting sequences of digitally modulated symbols from multiple sources. The arrangement identifies a suitable set of candidate values for at least one transmitted sequence of symbols and determines for each candidate value a set of sequences of transmitted symbols. The arrangement estimates at least one further set of sequence of transmitted symbols, calculates a metric for each sequence of transmitted symbols and selects the sequence that maximizes the metric. At the end, a-posteriori bit soft output information for the selected sequence is calculated from the metrics for said sequences. Generally, these calculations are base on the information coming from a channel state information matrix and a-priori information on said modulated symbols from a second module, such as a forward error correction code decoder.

Abstract translation: 用于检测来自多个源的数字调制符号序列的装置的实施例。 该装置为至少一个发送的符号序列识别适当的一组候选值，并且为每个候选值确定发送符号的一组序列。 该装置估计至少一组另外的发送符号序列集合，计算发送符号的每个序列的度量，并选择使度量最大化的序列。 最后，从所述序列的度量计算所选序列的后验位软输出信息。 通常，这些计算基于来自信道状态信息矩阵的信息和来自诸如前向纠错码解码器的第二模块的关于所述调制符号的先验信息。

公开(公告)号：EP1257064A1

公开(公告)日：2002-11-13

申请号：EP01111406.3

申请日：2001-05-10

Applicant: STMicroelectronics S.r.l.

Inventor： Ferrari, Marco, c/o CNR-CSTS, Dip. Elettronica ,  Siti, Massimiliano ,  Valle, Stefano ,  Osnato, Fabio ,  Scalise, Fabio

IPC: H03M13/27 ,  H03M13/00 ,  H03M13/29

CPC classification number: H03M13/2957 ,  H03M13/2746 ,  H03M13/2771 ,  H03M13/2789

Abstract: A method is described for designing a new prunable S-random interleaver (I) class to be used as a constituent part of turbo codes (C1, C2). With respect to previously proposed solutions the method has the advantage of being prunable to different block sizes while exhibiting at the same time, for any considered block size, performance comparable with the optimized "ad hoc" S-random interleavers. Another advantage is that, as for every S-random interleaver, the design rules are independent of the constituent codes and of the puncturing rate applied to the turbo code. Therefore, these interleavers potentially can find applications in any turbo code scheme (C1, C2) that requires interleaver size flexibility and code rate versatility, thanks to the advantage of requiring a single law storage (i.e. one ROM storage instead of several ROMs) from which all the others are obtained by pruning, without compromising the overall error rate performance.

Abstract translation: 描述了一种用于设计要用作turbo码（C1，C2）的组成部分的新的可修剪的S随机交织器（I）类的方法。 对于先前提出的解决方案，该方法的优点在于可以同时展现不同的块大小，对于任何考虑的块大小，与优化的“ad hoc”S随机交织器相当的性能。 另一个优点是，对于每个S随机交织器，设计规则独立于构成码和应用于turbo码的打孔率。 因此，这些交织器潜在地可以在需要交织器大小灵活性和代码率多功能性的任何turbo码方案（C1，C2）中找到应用，这得益于需要单规则存储（即，一个ROM存储而不是几个ROM）​​的优点， 所有其他的都是通过修剪获得的，而不会影响整体错误率性能。

公开(公告)号：EP1971063B1

公开(公告)日：2018-10-10

申请号：EP08152722.8

申请日：2008-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Siti, Massimiliano ,  Tomasoni, Alessandro ,  Ferrari, Marco Pietro ,  Bellini, Sandro ,  Volpatti, Oscar

IPC: H04L1/00 ,  H04L25/03

CPC classification number: H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

Abstract: An embodiment of an arrangement for detecting sequences of digitally modulated symbols from multiple sources. The arrangement identifies a suitable set of candidate values for at least one transmitted sequence of symbols and determines for each candidate value a set of sequences of transmitted symbols. The arrangement estimates at least one further set of sequence of transmitted symbols, calculates a metric for each sequence of transmitted symbols and selects the sequence that maximizes the metric. At the end, a-posteriori bit soft output information for the selected sequence is calculated from the metrics for said sequences. Generally, these calculations are base on the information coming from a channel state information matrix and a-priori information on said modulated symbols from a second module, such as a forward error correction code decoder.