公开(公告)号：US09031123B2

公开(公告)日：2015-05-12

申请号：US13835659

申请日：2013-03-15

Applicant: Fernando Lopez de Victoria

Inventor： Fernando Lopez de Victoria

IPC: H03H7/30 ,  H04L1/00 ,  H04L25/02

CPC classification number: H04L1/0038 ,  H04L25/0212 ,  H04L25/0232 ,  H04L25/0246

Abstract: A receiver performs interference mitigation under blind or semi-blind conditions using diversity present in the signal of interest or in the interferer. A first path interference mitigation procedure extracts training information from received signals, performs interference mitigation on the training information and estimates the channel. The second path interference mitigation procedure uses data extracted from the received signal and the channel estimate to perform interference mitigation. Each interference mitigation process can take the form of a lossy compression followed by decompression.

Abstract translation: 接收机在盲或半盲条件下使用感兴趣的信号或干扰信号中存在的分集来执行干扰减轻。 第一路径干扰减轻程序从接收信号中提取训练信息，对训练信息执行干扰减轻并估计该信道。 第二路径干扰减轻过程使用从接收信号提取的数据和信道估计来执行干扰减轻。 每个干扰减轻过程可以采取有损压缩的形式，随后进行解压缩。

公开(公告)号：US20140269883A1

公开(公告)日：2014-09-18

申请号：US13841348

申请日：2013-03-15

Applicant: Steven C. Thompson ,  Roee Kalinksy ,  Fernando Lopez de Victoria

Inventor： Steven C. Thompson ,  Roee Kalinksy ,  Fernando Lopez de Victoria

IPC: H04L27/01

CPC classification number: H04L25/0204 ,  H04L25/0212 ,  H04L25/0216 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2647

Abstract: An OFDM receiver generates an initial channel impulse response in response to a received OFDM signal. The receiver determines the time span within the initial channel impulse response in which significant paths are present. An intermediate channel impulse response estimator identifies paths within the initial channel impulse response and generates an improved intermediate channel impulse response. A channel impulse response estimator performs a second non-linear process to generate a channel impulse response. An equalizer responds to the channel impulse response and the OFDM symbol to equalize the OFDM symbol. Metrics are generated that can be used for effectively stopping the second iterative non-linear process.

Abstract translation: OFDM接收机响应于接收的OFDM信号产生初始信道脉冲响应。 接收机确定在其中存在有重要路径的初始信道脉冲响应中的时间间隔。 中间信道脉冲响应估计器识别初始信道脉冲响应内的路径，并产生改进的中间信道脉冲响应。 信道脉冲响应估计器执行第二非线性处理以产生信道脉冲响应。 均衡器响应于信道脉冲响应和OFDM符号以均衡OFDM符号。 生成可用于有效停止第二迭代非线性过程的度量。

公开(公告)号：US08761274B2

公开(公告)日：2014-06-24

申请号：US12365805

申请日：2009-02-04

Applicant: Fernando Lopez de Victoria

Inventor： Fernando Lopez de Victoria

IPC: H04K1/10

CPC classification number: H04L25/025 ,  H04B7/0848 ,  H04L25/0212 ,  H04L25/0224 ,  H04L27/2647

Abstract: An OFDM system generates a channel estimate in the time domain for use in either a frequency domain equalizer or in a time domain equalizer. Preferably channel estimation is accomplished in the time domain using a locally generated reference signal. The channel estimator generates an initial estimate from a cross correlation between the time domain reference signal and an input signal input to the receiver and generates at least one successive channel estimate. Preferably the successive channel estimate is determined by vector addition (or subtraction) to the initial channel estimate. The at least one successive channel estimate reduces the minimum mean square error of the estimate with respect to a received signal.

Abstract translation: OFDM系统在时域中产生用于频域均衡器或时域均衡器中的信道估计。 优选地，使用本地生成的参考信号在时域中完成信道估计。 信道估计器根据时域参考信号和输入到接收机的输入信号之间的互相关产生初始估计，并产生至少一个连续的信道估计。 优选地，通过对初始信道估计的向量相加（或减法）来确定连续信道估计。 所述至少一个连续的信道估计相对于接收到的信号减小估计的最小均方误差。