公开(公告)号：WO2007058769A3

公开(公告)日：2007-07-05

申请号：PCT/US2006042516

申请日：2006-10-30

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L ,  SCHARF LOUIS L

IPC: H04B1/00

CPC classification number: H04L1/0631 ,  H04L1/0048 ,  H04L1/005 ,  H04L5/023 ,  H04L25/0328 ,  H04L27/2647

Abstract: An OFDMA-MIMO receiver performs a recursive interference cancellation across several correlated subbands and several receive antenna elements to demodulate complex source symbols for several users that have been coded across several subbands and transmit antennas. The iterative parallel interference canceller (PIC) is configured to work in the presence of both spatial and frequency structure introduced by the transmitter space- frequency mapping and the actual frequency selective wireless channel. The interference canceller uses mixed decisions, confidence weights, and stabilizing step sizes in a PIC receiver, which may be used with a successive decoding architecture in a receiver that employs a combination of modulation level interference cancellation with successive decoding.

Abstract translation: OFDMA-MIMO接收机在几个相关子带和几个接收天线单元之间执行递归干扰消除，以解调已经在多个子带和发射天线上编码的几个用户的复数源符号。 迭代并行干扰消除器（PIC）被配置为在存在由发射机空间频率映射和实际频率选择性无线信道引入的空间和频率结构的情况下工作。 干扰消除器在PIC接收器中使用混合判定，置信度权重和稳定步长，其可以与接收器中的连续解码架构一起使用，该接收器采用调制等级干扰消除与连续解码的组合。

公开(公告)号：WO2007058754A3

公开(公告)日：2007-07-05

申请号：PCT/US2006042130

申请日：2006-10-30

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L

IPC: H04B1/00 ,  H04B1/707 ,  H04B7/216

CPC classification number: H04B1/7107 ,  H04B1/71072 ,  H04B1/71075 ,  H04B1/7115 ,  H04B7/0634 ,  H04L25/03006 ,  H04L2025/03375

Abstract: An interference-canceling receiver processes coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels from multiple transmit antennas to multiple receive antennas in a closed-loop transmit-diversity channel. The receiver provides for repeated use of symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimation. Receivers may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware, either within a Rake receiver at the finger level or outside the Rake at the user or subchannel symbol level. The receiver may be employed in user equipment on the forward link or in a base station on the reverse link.

Abstract translation: 干扰消除接收机处理通过频率选择通信信道从闭环发射分集信道中的多个发射天线传播到多个接收天线的编码，多址，扩频传输。 接收机提供重复使用符号估计加权，具有稳定步长的减法消除和混合判决符号估计。 接收器可以在软件或编程硬件中明确设计，适应和实现，或隐含地在标准的基于Rake的硬件中，无论是在手指级别的Rake接收器内还是在用户或子信道符号级别的Rake外部。 接收机可以被用在前向链路上的用户设备中或在反向链路上的基站中。

公开(公告)号：WO2007038015A3

公开(公告)日：2007-12-06

申请号：PCT/US2006036002

申请日：2006-09-15

Applicant: TENSORCOMM INC

Inventor： MCCLOUD MICHAEL L ,  VIJAY NAGARAJAN

IPC: H04B3/20 ,  H03D1/04 ,  H04B1/10

CPC classification number: H04J11/0023 ,  H04B1/10 ,  H04B1/7103 ,  H04B1/7107 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04J13/0003 ,  H04J13/20 ,  H04J2011/0006 ,  H04W24/06

Abstract: An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft-projection operator, and a soft-projection canceller configured for performing a soft projection of the received baseband signal to output an interference-cancelled signal. Weights used in the soft-projection operator are selected to maximize a post-processing SINR.

Abstract translation: 干扰消除器包括被配置为通过组合干扰的软和/或硬估计来生成CIV的复合干扰向量（CIV）生成器，被配置用于生成软投影算子的干扰消除运算符，以及被配置用于 执行所接收的基带信号的软投影以输出干扰消除的信号。 选择软投影算子中使用的权重以最大化后处理SINR。

公开(公告)号：WO2007038018A3

公开(公告)日：2007-12-13

申请号：PCT/US2006036018

申请日：2006-09-15

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L ,  NAGARAJAN VIJAY ,  GAGANDEEP SINGH LAMBA

IPC: H03D1/04 ,  H04B1/00

CPC classification number: H04B1/71075 ,  H04B1/7115 ,  H04B2201/70702

Abstract: A receiver is configured for canceling intra-cell and inter-cell interference in coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels. The receiver employs iterative symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware either within the Rake (i.e., at the finger level) or outside the Rake (i.e., at the user or subchannel symbol level).

Abstract translation: 接收机被配置为用于消除在通过频率选择性通信信道传播的编码的多址扩频传输中的小区内和小区间干扰。 接收机采用迭代符号估计加权，具有稳定步长的减法消除以及混合决策符号估计。 接收机实施例可以用软件或编程硬件明确地实现，或者隐式地在Rake内（即在手指级）或在Rake外（即在用户或子信道符号级）在标准的基于Rake的硬件中实现。

公开(公告)号：WO2007038039A3

公开(公告)日：2007-06-07

申请号：PCT/US2006036207

申请日：2006-09-15

Applicant: TENSORCOMM INC

Inventor： MCCLOUD MICHAEL L ,  NAGARAJAN VIJAY ANAND

IPC: H04B1/00 ,  H04B7/216

CPC classification number: H04B1/1027 ,  H04B1/7103 ,  H04B1/7107 ,  H04B1/712

Abstract: Interference is cancelled from a baseband signal by synthesizing interference from estimated symbols in interfering subchannels. The estimated symbols are hard-coded, soft weighted, or zeroed, depending on the value of an estimated pre-processed signal-to-interference-and-noise ratio (SINR) in each subchannel in order to maximize a post-processed SINR. The estimated pre-processed SINR is obtained from averages of estimated symbol energies and estimated noise variances, or from related statistical procedures.

Abstract translation: 通过合成来自干扰子信道中的估计符号的干扰，从基带信号中消除干扰。 所估计的符号是硬编码的，软加权的或归零的，这取决于每个子信道中估计的预处理的信号与干扰噪声比（SINR）的值，以便最大化后处理的SINR。 估计的预处理SINR从估计符号能量和估计噪声方差的平均值或相关统计程序中获得。

公开(公告)号：WO2007038016A3

公开(公告)日：2007-12-21

申请号：PCT/US2006036003

申请日：2006-09-15

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L ,  NAGARAJAN VIJAY ,  LAMBA GAGANDEEP SINGH

IPC: H04B1/00 ,  H04B1/707

CPC classification number: H04B7/0845 ,  H04B1/7103 ,  H04B1/712

Abstract: This invention teaches to the details of an interference canceling receiver for canceling intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency selective communication channels to a multiplicity of receive antennas. The receiver is designed or adapted through the repeated use of symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard RAKE-based hardware either within the RAKE (i.e., at the finger level) or outside the RAKE (i.e., at the user or subchannel symbol level). Embodiments may be employed in user equipment on the forward link or in a base station on the reverse link. It may be adapted to general signal processing applications where a signal is to be extracted from interference.

Abstract translation: 本发明教导了用于消除通过频率选择通信信道传播到多个接收天线的经编码的多址扩频传输中的小区内和小区间干扰的干扰消除接收机的细节。 通过重复使用符号估计加权，具有稳定步长的减法消除和混合判决符号估计来设计或调整接收机。 接收器实施例可以在软件或编程硬件中明确设计，适应和实现，或隐含地在RAKE（即，在手指级）或RAKE外部（即在用户或子信道符号处）内的基于标准RAKE的硬件中 水平）。 可以在前向链路上的用户设备或反向链路上的基站中采用实施例。 它可以适用于要从干扰中提取信号的一般信号处理应用。

公开(公告)号：WO2007038017A3

公开(公告)日：2007-11-01

申请号：PCT/US2006036004

申请日：2006-09-15

Applicant: TENSORCOMM INC

Inventor： MCCLOUD MICHAEL L ,  GUESS TOMMY

IPC: H04B1/10

CPC classification number: H04B1/71075 ,  H04B1/7105 ,  H04B1/712

Abstract: An interference-canceling receiver is configured for cancelling inter-symbol interference due to both inter- and intra-channel interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency-selective communication channels. The receiver mitigates the effects of post-cursor inter-symbol interference using feedback of previously estimated symbols, and mitigates pre-cursor inter-symbol interference using an interference canceller, such as an iterative interference canceller.

Abstract translation: 干扰消除接收机被配置为消除由于通过频率选择性通信信道传播的经编码的多址扩频传输中的信道间和信道间干扰而引起的符号间干扰。 接收机使用先前估计的符号的反馈来减轻后标记符号间干扰的影响，并且使用诸如迭代干扰消除器之类的干扰消除器来减轻前置符号间干扰。

公开(公告)号：WO2007058791A2

公开(公告)日：2007-05-24

申请号：PCT/US2006042954

申请日：2006-10-30

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L ,  NAGARAJAN VIJAY ,  SINGH LAMBA GAGANDEEP

IPC: H04B1/00 ,  H04B1/707

CPC classification number: H04B1/715 ,  H04B1/7107 ,  H04B1/71072 ,  H04B1/71075 ,  H04B1/7115 ,  H04L25/03006 ,  H04L2025/03375

Abstract: A receiver is configured for canceling intra-cell and inter-cell interference in coded, multiple-access, spread-spectrum transmissions that propagate through frequency^selective, communication channels. The receiver employs iterative symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware either within the Rake (i.e., at the finger level) or outside the Rake (i.e., at the user or subchannel symbol level).

Abstract translation: 接收机被配置为消除通过频率选择性通信信道传播的编码，多址，扩频传输中的小区内和小区间干扰。 接收机采用迭代符号估计加权，具有稳定步长的减法消除和混合判决符号估计。 接收器实施例可以在软件或编程硬件中明确实现，或者隐含地在Rake（即，在手指级）处或Rake外部（即在用户或子信道符号级别）处于标准Rake的硬件中。