公开(公告)号：US20110206207A1

公开(公告)日：2011-08-25

申请号：US13126983

申请日：2008-10-31

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04L1/02 ,  H04K1/04

CPC分类号： H04L27/2621

摘要： A multi-carrier data communication is selectively operable in one of different communication modes which result in differently structured communication signals, the communication being configured for processing a data item intended to be transmitted to generate different transmission candidate data; selecting one of the transmission candidate data for transmission; selecting one of the communication modes based on the selected data item; and transmitting the selected data item using the selected communication mode.

摘要翻译： 多载波数据通信可选择性地在不同通信模式之一中工作，这导致不同结构的通信信号，该通信被配置用于处理意图被发送的数据项以产生不同的传输候选数据; 选择所述传输候选数据之一进行传输; 基于选择的数据项选择通信模式之一; 以及使用所选择的通信模式发送所选择的数据项。

公开(公告)号：US07760823B2

公开(公告)日：2010-07-20

申请号：US10583664

申请日：2003-12-29

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H03D1/00 ,  H04L27/06 ,  H04B7/08

CPC分类号： H04B7/04 ,  H04L27/2656 ,  H04L27/2675 ,  H04W28/18

摘要： In a robust system and method for detecting packets in SISO and MIMO broadband multicarrier transmission, a packet detector computes continuously the sum of the moduli of the power-normalized auto-correlations of a sequence of received signals (204), tuned on the periodicity of the training symbols. When the power-normalized auto-correlation exceeds a first predetermined threshold (206), then the maximum value of the sum of the moduli of all the cross-correlations between the received signals and the M aperiodic sequences is computed in a given time window (208), sliding in time from −c0 to c0. A packet is identified as received (212) when the maximum value of the sum of the moduli of the cross-correlations exceeds a second predetermined threshold (210).

摘要翻译： 在用于检测SISO和MIMO宽带多载波传输中的分组的鲁棒系统和方法中，分组检测器连续计算接收信号序列（204）的功率归一化自相关的模量之和， 训练符号。 当功率归一化自相关超过第一预定阈值（206）时，在给定的时间窗口中计算接收信号和非周期性序列之间的所有互相关的模数之和的最大值 208），时间从-c0滑动到c0。 当互相关模数之和的最大值超过第二预定阈值（210）时，分组被识别为接收（212）。

公开(公告)号：US20090175362A1

公开(公告)日：2009-07-09

申请号：US10583664

申请日：2003-12-29

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04L27/28

CPC分类号： H04B7/04 ,  H04L27/2656 ,  H04L27/2675 ,  H04W28/18

摘要： In a robust system and method for detecting packets in SISO and MIMO broadband multicarrier transmission, a packet detector computes continuously the sum of the moduli of the power-normalized auto-correlations of a sequence of received signals (204), tuned on the periodicity of the training symbols. When the power-normalized auto-correlation exceeds a first predetermined threshold (206), then the maximum value of the sum of the moduli of all the cross-correlations between the received signals and the M aperiodic sequences is computed in a given time window (208), sliding in time from −c0 to c0. A packet is identified as received (212) when the maximum value of the sum of the moduli of the cross-correlations exceeds a second predetermined threshold (210).

摘要翻译： 在用于检测SISO和MIMO宽带多载波传输中的分组的鲁棒系统和方法中，分组检测器连续计算接收信号序列（204）的功率归一化自相关的模量之和， 训练符号。 当功率归一化自相关超过第一预定阈值（206）时，在给定的时间窗口中计算接收信号和非周期性序列之间的所有互相关的模数之和的最大值 208），时间从-c0滑动到c0。 当互相关模数之和的最大值超过第二预定阈值（210）时，分组被识别为接收（212）。

公开(公告)号：US20130034040A1

公开(公告)日：2013-02-07

申请号：US13642290

申请日：2010-04-20

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04W4/06

CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/048

摘要： A multiple-user multiple input-multiple output wireless communication system uses a set of multiple subcarriers arranged in plural subsets or resource blocks. Precoding of signals transmitted from a base station to user terminals involves acquiring channel state information on the connection channel between the base station and user terminals in the plurality. Channel quality indicators are detected with user terminals for respective subsets of resource blocks to produce user/resource block pairs having associated channel quality indicators. The user/resource block pairs are subjected to selection as a function of the channel quality indicators associated therewith so that precoding is performed by acquiring channel state information exclusively for the user/resource block pairs surviving the selection as a function of the channel quality indicators and, possibly, other selection steps as a function of other parameters, such as, speed, maximum bit rate, and direction of arrival or angular spread in a multiple-stage selection process.

摘要翻译： 多用户多输入多输出无线通信系统使用以多个子集或资源块排列的一组多个子载波。 从基站向用户终端发送的信号的预编码涉及在多个基站与用户终端之间的连接信道上取得信道状态信息。 用资源块的各个子集的用户终端检测信道质量指示符，以产生具有相关信道质量指示符的用户/资源块对。 用户/资源块对作为与其相关联的信道质量指示符的函数进行选择，使得通过仅针对作为信道质量指示符的函数的选择存在的用户/资源块对获取信道状态信息来执行预编码，并且 可能的其他选择步骤作为其他参数的函数，诸如在多级选择过程中的速度，最大比特率以及到达方向或角度扩展。

公开(公告)号：US20130003812A1

公开(公告)日：2013-01-03

申请号：US13520028

申请日：2009-12-30

申请人： Ivano Salvatore Collotta ,  Gian Michele Dell'Aera ,  Bruno Melis ,  Fabio Mondin ,  Paolo Priotti

发明人： Ivano Salvatore Collotta ,  Gian Michele Dell'Aera ,  Bruno Melis ,  Fabio Mondin ,  Paolo Priotti

IPC分类号： H04B7/06 ,  H04B17/00

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0697

摘要： A method for selecting a precoding matrix to be used in a MIMO communication system includes a transmitter, a receiver and a communication channel, wherein the precoding matrix is used by the transmitter to precode codewords to be transmitted to the receiver over the communication channel. At the receiver, an optimum precoding matrix within a codebook of precoding matrices is determined on the base of a metric related to the power of received signal layers. An indication is then fed back from the receiver to the transmitter useful to enable the transmitter to select the optimum precoding matrix from the codebook.

摘要翻译： 用于选择要在MIMO通信系统中使用的预编码矩阵的方法包括发射机，接收机和通信信道，其中，所述预编码矩阵由所述发射机用于通过所述通信信道对要发送到所述接收机的码字进行预编码。 在接收机处，在与接收信号层的功率相关的度量的基础上确定预编码矩阵码本内的最佳预编码矩阵。 然后，指示从接收机反馈到发射机，有助于使发射机从码本中选择最佳预编码矩阵。

公开(公告)号：US20100159841A1

公开(公告)日：2010-06-24

申请号：US12449438

申请日：2007-10-03

申请人： Sergio Barberis ,  Paolo Priotti

发明人： Sergio Barberis ,  Paolo Priotti

IPC分类号： H04B17/00

CPC分类号： H04B17/005 ,  H04B17/24 ,  H04B17/345 ,  H04L27/2602 ,  H04W24/00 ,  H04W28/04

摘要： A method for characterizing interference in a radio communication system including a plurality of user equipment communicating with transceiver stations, includes: determining quantities indicative of interference (attenuation or power) experienced by a transceiver station interfered by interfering user equipment; and exchanging between transceiver stations information based on these quantities and concerning interference from the interfering user equipment. In particular, the user equipment is in communication with respective serving transceiver stations, and exchanging includes sending from the serving transceiver stations to the interfered transceiver stations information concerning interference from user equipment served by the serving transceiver stations and interfering with the interfered transceiver stations. The method further includes grouping, by the serving transceiver station, the interfering user equipment according to a given grouping criterion in order to form groups thereof.

摘要翻译： 一种用于表征包括与收发机台通信的多个用户设备的无线电通信系统中的干扰的方法，包括：确定指示由干扰用户设备干扰的收发机所经历的干扰（衰减或功率）的量; 并且基于这些数量和收到来自干扰用户设备的干扰的收发台之间的信息交换。 特别地，用户设备与各个服务收发台进行通信，并且交换包括从服务收发台向受干扰的收发台发送关于由服务收发台服务的用户设备的干扰以及干扰受干扰的收发信台的信息。 该方法还包括由服务收发台根据给定的分组标准对干扰用户设备进行分组，以便形成其组。

公开(公告)号：US20100027608A1

公开(公告)日：2010-02-04

申请号：US12311353

申请日：2006-09-29

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04L27/28 ,  H04B7/02 ,  H03H7/30 ,  H04L27/00 ,  H03D1/00 ,  H04L9/00

CPC分类号： H04L25/03866 ,  H04L25/03159 ,  H04L25/03343 ,  H04L27/2607 ,  H04L27/261 ,  H04L2025/03414

摘要： Signals (typically in the form of OFDM signals) are transmitted between one or more transmitting antennas and one or more receiving antennas. The signals transmitted are subject to addition of a guard interval before scrambling in the time domain, while the signals received are subject to removal of the guard interval after scrambling in the time domain. Preferably time-scrambling of the OFDM signal being transmitted occurs after IFFT processing and guard interval insertion, while time de-scrambling of the signal being received occurs before both guard interval removal and FFT processing. Optionally, unscrambled pilot symbols (e.g. in the form of a training sequence), can be present at regular intervals inside the signal structure. At the receiver, equalization is carried out preferably in the frequency domain.

摘要翻译： 在一个或多个发射天线和一个或多个接收天线之间传送信号（通常以OFDM信号的形式）。 所发送的信号在时域加扰之前加上保护间隔，而接收到的信号在时域加扰之后会被去除。 优选地，正在发送的OFDM信号的时间加扰在IFFT处理和保护间隔插入之后发生，而在接收到的信号的时间去加扰在保护间隔去除和FFT处理之前发生。 可选地，未加扰的导频符号（例如以训练序列的形式）可以以信号结构内的规则间隔存在。 在接收机处，优选地在频域中进行均衡。

公开(公告)号：US07298787B2

公开(公告)日：2007-11-20

申请号：US10877787

申请日：2004-06-25

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04B7/02

CPC分类号： H04B7/022 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675

摘要： A method for facilitating broadband multi-carrier wireless transmission, whereby a plurality of transmit antennas are divided into two or more transmit antenna groups of transmit antennas so that the correlation between antennas in each group is minimized, and each group of antennas transmits on a predetermined frequency with a different time periodicity, and each transmit antenna in each group transmits training sequences which are reciprocally time-orthogonal. Each of a plurality of receive antennas receives signals from each transmit antenna group. The signals from each group are separated via a band-pass filter, and a maximum estimation range of a frequency offset estimation algorithm is determined by the group having the shortest time period, and the accuracy of the frequency offset estimation algorithm is determined by the group having the longest time period. The received signal is corrected with the frequency offset.

摘要翻译： 一种促进宽带多载波无线传输的方法，由此多个发射天线被分成发射天线的两个或更多个发射天线组，使得每个组中的天线之间的相关性最小化，并且每组天线以预定的 频率具有不同的时间周期，并且每组中的每个发射天线发射相互时间正交的训练序列。 多个接收天线中的每一个接收来自每个发射天线组的信号。 来自各组的信号经由带通滤波器分离，频偏估计算法的最大估计范围由具有最短时间段的组确定，频偏估计算法的精度由组确定 具有最长的时间段。 接收到的信号用频率偏移校正。

公开(公告)号：US20070173261A1

公开(公告)日：2007-07-26

申请号：US11340348

申请日：2006-01-26

申请人： Paolo Priotti ,  Kodo Shu ,  Tsuyoshi Kashima

发明人： Paolo Priotti ,  Kodo Shu ,  Tsuyoshi Kashima

IPC分类号： H04Q7/20

CPC分类号： H04B17/382 ,  H04B17/309 ,  H04B17/345 ,  H04W52/36

摘要： A system for using a predetermined sequence of transmission modes together with power sequencing in order to reduce signaling while improving SNIR levels. Each sequence comprises a vector of transmission modes, where each mode can include a signal constellation, a concatenated channel coding type and rate and, for multiple-input multiple-output systems, one type of matrix modulation. Base transceiver stations can estimate the interference condition for each piece of user equipment and, based on this information, will preferably decide an optimal sequence for each item of user equipment.

摘要翻译： 一种用于使用预定的传输模式序列与电源排序的系统，以便在改善SNIR电平的同时减少信令。 每个序列包括传输模式的向量，其中每个模式可以包括信号星座图，级联的信道编码类型和速率，并且对于多输入多输出系统，一种类型的矩阵调制。 基站收发台可以估计每个用户设备的干扰条件，并且基于该信息，将优选地为每个用户设备项目确定最佳序列。

公开(公告)号：US20050041693A1

公开(公告)日：2005-02-24

申请号：US10646524

申请日：2003-08-22

申请人： Paolo Priotti

发明人： Paolo Priotti

IPC分类号： H04B7/02 ,  H04L27/00 ,  H04L27/26 ,  H04J3/06 ,  H04J11/00

CPC分类号： H04L27/2657 ,  H04B7/02 ,  H04L27/2656 ,  H04L27/2675 ,  H04L2027/0028 ,  H04L2027/0095 ,  H04L2027/0097

摘要： A method and apparatus for synchronizing in the receiver of an orthogonal frequency division multiplexing (OFDM) wireless communication system, and in particular a multiple input multiple output (MIMO) OFDM system. The OFDM transmitter inserts training symbols into the transmission signals, and when the transmission is received a frequency synchronization module develops from them a weighted representation of the received signal from which frequency offset estimates for use in frequency offset compensation may be made.

摘要翻译： 一种用于在正交频分复用（OFDM）无线通信系统的接收机中进行同步的方法和装置，特别是多输入多输出（MIMO）OFDM系统。 OFDM发射机将训练符号插入到传输信号中，并且当接收到传输时，频率同步模块从它们发展出可以进行用于频偏补偿的频率偏移估计的接收信号的加权表示。