公开(公告)号：US08351529B2

公开(公告)日：2013-01-08

申请号：US11989055

申请日：2006-07-20

申请人： Massimiliano Siti ,  Michael P. Fitz

发明人： Massimiliano Siti ,  Michael P. Fitz

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L25/06 ,  H04L1/0052 ,  H04L1/0054 ,  H04L1/06 ,  H04L25/03292 ,  H04L25/03331 ,  H04L2025/03414

摘要： A method (200a-200b), apparatus (104), and computer program for detecting sequences of digitally modulated symbols transmitted by multiple sources (102, 102a-102t) are provided. A real-domain representation that separately treats in-phase and quadrature components of a received vector, channel gains, and a transmitted vector transmitted by the multiple sources (102, 102a-102t) is determined. The real-domain representation is processed to obtain a triangular matrix. In addition, at least one of the following is performed: (i) hard decision detection of a transmitted sequence and demapping of corresponding bits based on a reduced complexity search of a number of transmit sequences, and (ii) generation of bit soft-output values based on the reduced complexity search of the number of transmit sequences. The reduced complexity search is based on the triangular matrix.

公开(公告)号：US20090154599A1

公开(公告)日：2009-06-18

申请号：US11989055

申请日：2006-07-20

申请人： Massimiliano Siti ,  Michael P. Fitz

发明人： Massimiliano Siti ,  Michael P. Fitz

IPC分类号： H04L27/38 ,  H04L27/06

CPC分类号： H04L25/06 ,  H04L1/0052 ,  H04L1/0054 ,  H04L1/06 ,  H04L25/03292 ,  H04L25/03331 ,  H04L2025/03414

摘要： A method (200a-200b), apparatus (104), and computer program for detecting sequences of digitally modulated symbols transmitted by multiple sources (102, 102a-102t) are provided. A real-domain representation that separately treats in-phase and quadrature components of a received vector, channel gains, and a transmitted vector transmitted by the multiple sources (102, 102a-102t) is determined. The real-domain representation is processed to obtain a triangular matrix. In addition, at least one of the following is performed: (i) hard decision detection of a transmitted sequence and demapping of corresponding bits based on a reduced complexity search of a number of transmit sequences, and (ii) generation of bit soft-output values based on the reduced complexity search of the number of transmit sequences. The reduced complexity search is based on the triangular matrix.

摘要翻译： 提供了一种用于检测由多个源（102,102-102t）发送的数字调制码元的序列的方法（200a-200b），装置（104）和计算机程序。 确定单独处理接收矢量的同相和正交分量，信道增益和由多个源（102,102-102t）发送的发送矢量的实域表示。 处理真实域表示以获得三角矩阵。 另外，执行以下中的至少一个：（i）基于多个发送序列的降低的复杂度搜索，发送序列的硬判决检测和相应比特的解映射，以及（ii）产生位软输出 基于传输序列数量的复杂度降低的搜索值。 降低的复杂度搜索基于三角矩阵。

公开(公告)号：US20080310554A1

公开(公告)日：2008-12-18

申请号：US12077073

申请日：2008-03-14

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

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

IPC分类号： H04L27/06

CPC分类号： H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

摘要： 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.

摘要翻译： 用于检测来自多个源的数字调制符号的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一组发送符号的序列。 该布置估计至少一个另外的发送符号序列集合，计算每个发送符号序列的度量，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：US06785861B2

公开(公告)日：2004-08-31

申请号：US09781130

申请日：2001-02-09

申请人： Fabio Scalise ,  Fabio Osnato ,  Stefano Valle ,  Massimiliano Siti ,  Sergio Benedetto

发明人： Fabio Scalise ,  Fabio Osnato ,  Stefano Valle ,  Massimiliano Siti ,  Sergio Benedetto

IPC分类号： H03M1300

CPC分类号： H03M13/2972 ,  H03M13/256 ,  H03M13/2789 ,  H03M13/6362

摘要： An input digital signal is encoded by subjecting it to a first convolutional coding step followed by an interleaving step and a second convolutional coding step. The serial concatenated convolutional coded signal thus obtained is then subjected to modulation by means of a two-dimensional modulation scheme such as M-PSK or M-QAM. The corresponding decoding process involves an iterative decoding algorithm based on cascaded logarithmic soft-input soft-output processing steps.

摘要翻译： 通过对输入数字信号进行经过交织步骤和第二卷积编码步骤的第一卷积编码步骤进行编码。 然后通过诸如M-PSK或M-QAM的二维调制方案对如此获得的串行级联卷积编码信号进行调制。 相应的解码过程涉及基于级联对数软输入软输出处理步骤的迭代解码算法。

公开(公告)号：US08358685B2

公开(公告)日：2013-01-22

申请号：US12640927

申请日：2009-12-17

申请人： Massimiliano Siti ,  Oscar Volpatti

发明人： Massimiliano Siti ,  Oscar Volpatti

IPC分类号： H04L27/10

CPC分类号： H04L25/03178 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/067 ,  H04L2025/03426

摘要： One or more embodiments to iteratively detect and decode data transmitted in a wireless communication system, featuring a MIMO detector and a soft input soft-output error-correction-code decoder. More specifically, a method suitable for iterative detection and decoding schemes is proposed, which is able to output near optimal bit soft information processing efficiently given input bit soft information. First, a transmitting source is selected as a reference layer, wherein the associated symbol represents a reference transmit symbol. Subsequently, a set of candidate values are identified for the reference transmit symbol. For each candidate value a candidate transmit sequence is estimated through a novel spatial decision feedback equalization process based on both Euclidean distance metrics and the a-priori soft information provided by the SISO ECC decoder. The novel DFE technique uses a novel bit metric. Techniques are provided to identify a reduced size transmit symbol candidate set and generate from it near-optimal LLRs, also processing input a-priori LLRs in an iterative fashion.

摘要翻译： 迭代地检测和解码在无线通信系统中发送的数据的一个或多个实施例，其特征在于MIMO检测器和软输入软输出纠错码解码器。 更具体地，提出了一种适用于迭代检测和解码方案的方法，其能够在输入位软信息有效地输出近似最优位软信息处理。 首先，选择发送源作为参考层，其中相关联的符号表示参考发送符号。 随后，为参考发送符号识别一组候选值。 对于每个候选值，通过基于欧几里德距离度量和由SISO ECC解码器提供的先验软信息的新颖的空间判决反馈均衡处理来估计候选发送序列。 新颖的DFE技术使用新的比特度量。 提供技术来识别缩小尺寸的传输符号候选集并从其生成近最优LLR，并且还以迭代方式处理输入先验LLR。

公开(公告)号：US20100111160A1

公开(公告)日：2010-05-06

申请号：US12531297

申请日：2007-03-14

申请人： Massimiliano Siti

发明人： Massimiliano Siti

IPC分类号： H04L27/01 ,  H04L27/06 ,  H04L27/38 ,  H04L27/18

CPC分类号： H04L25/03318 ,  H04L1/005 ,  H04L25/03006 ,  H04L27/2601 ,  H04L2025/03426

摘要： Embodiments of a method and an apparatus for detecting multiple complex-valued symbols belonging to discrete constellations. The method and apparatus is a detector that finds a closest vector, or a close approximation of it, to a received vector. The invention also gets (optimally, in case of two transmit sources) or closely approximates (for more than two transmit sources) the most likely sequences required for an optimal bit or symbol a-posteriori probability computation. Also part of the present invention is represented by Also embodiments of a method and an apparatus to determine a near-optimal ordering algorithms for the aforementioned purpose. The method and apparatus achieves optimal performance for two transmit antennas and achieves near-optimal performance for a higher number of antennas, with a lower complexity as compared to a maximum-likelihood detection method and apparatus. The method and apparatus are suitable for highly parallel hardware architectures.

摘要翻译： 用于检测属于离散星座的多个复值符号的方法和装置的实施例。 该方法和装置是一种检测器，其向接收的矢量找到最接近的矢量或其近似值。 本发明还获得（最佳情况下，在两个发射源的情况下）或近似近似（对于两个以上的发射源）最佳比特或符号后验概率计算所需的最可能的序列。 本发明的一部分也由为上述目的确定近似最优排序算法的方法和装置的实施例。 与最大似然检测方法和装置相比，该方法和装置实现了对于两个发射天线的最佳性能并且对于更多数量的天线实现了接近最佳性能，具有较低的复杂度。 该方法和装置适用于高度并行的硬件架构。

公开(公告)号：US08588322B2

公开(公告)日：2013-11-19

申请号：US12875100

申请日：2010-09-02

申请人： Massimiliano Siti ,  Teo Cupaiuolo ,  Alessandro Tomasoni ,  Sandro Bellini

发明人： Massimiliano Siti ,  Teo Cupaiuolo ,  Alessandro Tomasoni ,  Sandro Bellini

IPC分类号： H04B7/02

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

摘要： 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.

摘要翻译： 提供了用于检测信号并产生多输入多输出系统的位软输出的方法和装置的实施例。 该设备包括至少一个信道估计预处理单元，一个接收向量处理和一个检测和软输出生成单元。 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以确定性的复杂性和延迟计算近似最优位软输出信息。 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系统的尺寸方面实现低复杂度，高数据速率，可扩展性以及所支持的调制阶数的灵活性，这些都是大多数MIMO无线传输应用的潜在关键因素。

公开(公告)号：US07210075B2

公开(公告)日：2007-04-24

申请号：US10143531

申请日：2002-05-09

申请人： Marco Ferrari ,  Massimiliano Siti ,  Stefano Valle ,  Fabio Osnato ,  Fabio Scalise

发明人： Marco Ferrari ,  Massimiliano Siti ,  Stefano Valle ,  Fabio Osnato ,  Fabio Scalise

IPC分类号： G06F11/00

CPC分类号： H03M13/2957 ,  H03M13/2746 ,  H03M13/2771 ,  H03M13/2789

摘要： A method for designing a new prunable S-random interleaver class to be used as a constituent part of turbo codes. 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 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.

摘要翻译： 一种用于设计新的可修剪的S随机交织器类的方法，以用作turbo码的组成部分。 对于先前提出的解决方案，该方法的优点是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码方案中找到应用，这得益于需要单一定律存储（即，一个ROM存储而不是几个ROM）​​的优点， 其他人通过修剪获得，而不会影响整体错误率性能。

公开(公告)号：US09231794B2

公开(公告)日：2016-01-05

申请号：US12531297

申请日：2007-03-14

申请人： Massimiliano Siti

发明人： Massimiliano Siti

IPC分类号： H04L27/01 ,  H04L27/06 ,  H04L27/38 ,  H04L27/18 ,  H04L25/03 ,  H04L1/00 ,  H04L27/26

CPC分类号： H04L25/03318 ,  H04L1/005 ,  H04L25/03006 ,  H04L27/2601 ,  H04L2025/03426

摘要： Embodiments of a method and an apparatus for detecting multiple complex-valued symbols belonging to discrete constellations. The method and apparatus is a detector that finds a closest vector, or a close approximation of it, to a received vector. The disclosure also gets (optimally, in case of two transmit sources) or closely approximates (for more than two transmit sources) the most likely sequences required for an optimal bit or symbol a-posteriori probability computation. Also part of the present disclosure is represented by Also embodiments of a method and an apparatus to determine a near-optimal ordering algorithms for the aforementioned purpose. The method and apparatus achieves optimal performance for two transmit antennas and achieves near-optimal performance for a higher number of antennas, with a lower complexity as compared to a maximum-likelihood detection method and apparatus. The method and apparatus are suitable for highly parallel hardware architectures.

摘要翻译： 用于检测属于离散星座的多个复值符号的方法和装置的实施例。 该方法和装置是一种检测器，其向接收的矢量找到最接近的矢量或其近似值。 本公开还获得（最佳情况下，在两个发射源的情况下）或近似近似（对于两个以上的发射源）最佳比特或符号进行后验概率计算所需的最可能的序列。 本公开的一部分也由为上述目的确定近似最优排序算法的方法和装置的实施例。 与最大似然检测方法和装置相比，该方法和装置实现了对于两个发射天线的最佳性能并且对于更多数量的天线实现了接近最佳性能，具有较低的复杂度。 该方法和装置适用于高度并行的硬件架构。

公开(公告)号：US08432987B2

公开(公告)日：2013-04-30

申请号：US12077073

申请日：2008-03-14

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

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

IPC分类号： H04B7/02 ,  H04L27/06

CPC分类号： H04L25/03292 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0064 ,  H04L1/0656 ,  H04L25/03331

摘要： An embodiment of an arrangement detects 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 sequences 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 based on the information coming from a channel-state-information matrix and a-priori information on the modulated symbols from a second module, such as a forward error-correction-code (ECC) decoder.