公开(公告)号：US20080273633A1

公开(公告)日：2008-11-06

申请号：US11743848

申请日：2007-05-03

Applicant: ALAN P. CONRAD ,  KEVIN G. DOBERSTEIN

Inventor： ALAN P. CONRAD ,  KEVIN G. DOBERSTEIN

IPC: H04L27/06

CPC classification number: H04L27/2647

Abstract: A method and system are provided for enhanced signal detection in a frequency selective fading channel. Improved signal detection is realized by replacing single matched filters with multiple matched filters. The single matched filter spectrum is partitioned by frequency into M matched filter groups, where M is a positive integer greater than one. The filter bandwidth of each of the M matched filters is less than the bandwidth of the single matched filter from which they are derived. The M matched filters are provided to filter in parallel fashion the input signal into M sub-spectrums of the signal. The input signal is filtered through the M matched filters and also sent to the energy detector. The matched filter outputs are combined and the received signal is detected using the combined output and the energy in the received signal.

Abstract translation: 提供了一种在频率选择性衰落信道中增强信号检测的方法和系统。 通过用多个匹配滤波器替换单个匹配滤波器来实现改进的信号检测。 单个匹配滤波器频谱被频率划分为M个匹配滤波器组，其中M是大于1的正整数。 每个M匹配滤波器的滤波器带宽小于从中导出它们的单个匹配滤波器的带宽。 M匹配滤波器被提供以将输入信号并行地滤波成信号的M个子频谱。 输入信号通过M匹配滤波器滤波，并发送到能量检测器。 匹配的滤波器输出被组合，并且使用组合的输出和接收信号中的能量来检测接收的信号。

公开(公告)号：US20080320357A1

公开(公告)日：2008-12-25

申请号：US11765634

申请日：2007-06-20

Applicant: ALAN P. CONRAD ,  KEVIN G. DOBERSTEIN

Inventor： ALAN P. CONRAD ,  KEVIN G. DOBERSTEIN

IPC: H04L1/18

CPC classification number: H04L1/1819 ,  H04L1/0003 ,  H04L1/1642

Abstract: A transmitting unit combines a slot identifier (SI) and a block identifier (BI) in each header that is transmitted with the data to allow a receiving unit to associate previously received data blocks with retransmissions, or retries, of the same respective data blocks in order to perform bit error detection in accordance with a hybrid or selective ARQ protocol. The receiving unit uses the SI and BI contained in the MHBKs to determine a correspondence between a retried data and a previously transmitted data block.

Abstract translation: 发送单元在与数据一起发送的每个报头中组合时隙标识符（SI）和块标识符（BI），以允许接收单元将先前接收的数据块与相同的各个数据块的重传或重试相关联 按照混合或选择性ARQ协议执行位错误检测。 接收单元使用包含在MHBK中的SI和BI来确定重试数据和先前发送的数据块之间的对应关系。

公开(公告)号：US20080165673A1

公开(公告)日：2008-07-10

申请号：US11621349

申请日：2007-01-09

Applicant: COLIN D. FRANK ,  ALAN P. CONRAD ,  ROBERT J. CORKE ,  JORGE L. SEOANE

Inventor： COLIN D. FRANK ,  ALAN P. CONRAD ,  ROBERT J. CORKE ,  JORGE L. SEOANE

IPC: H04Q7/00

CPC classification number: H04L27/2662 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2675

Abstract: First incoming data comprising at least one OFDM symbol is received (302). A plurality of timing relationships is determined and each of the plurality of timing relationships relates to an alignment window of a fast Fourier transform (FFT) (304). Each of the plurality of timing relationships is applied to the first incoming data (306) and a plurality of achievable interference metrics associated with the first incoming data is responsively determined (308). Each of the plurality of achievable interference metrics is associated with a selected one of the plurality of timing relationships. The preferred interference metric is chosen from amongst the plurality of achievable interference metrics.

Abstract translation: 接收包括至少一个OFDM符号的第一输入数据（302）。 确定多个定时关系，并且多个定时关系中的每一个与快速傅立叶变换（FFT）的对准窗口相关（304）。 多个定时关系中的每一个被应用于第一输入数据（306），并且响应地确定与第一输入数据相关联的多个可实现的干扰度量（308）。 多个可实现的干扰度量中的每一个与所述多个定时关系中的所选择的一个相关联。 从多个可实现的干扰度量中选择优选的干扰度量。