公开(公告)号：US20020126741A1

公开(公告)日：2002-09-12

申请号：US09903175

申请日：2001-07-11

Applicant: MOTOROLA INC.

Inventor： Kevin Baum ,  Frederick W. Vook ,  Timothy A. Thomas

IPC: H04K001/00

CPC classification number: H04B1/7097 ,  H04B2201/709709 ,  H04J13/0048 ,  H04L1/0061 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03159 ,  H04L27/2607 ,  H04L27/261

Abstract: The invention provides a method and system for transmission and frequency domain equalization for wideband CDMA communications by providing at least one spread sequence portion, and inserting a cyclic redundancy to the spread sequence to form a transmitted baseband sequence. The invention further provides a method and system for converting a plurality of receive samples from at least one spread sequence portion into a plurality of frequency domain samples, determining a plurality of frequency domain equalization weights for the frequency domain samples, and determining a time domain signal estimate based on the frequency domain equalization weights and frequency domain samples.

Abstract translation: 本发明提供一种用于宽带CDMA通信的传输和频域均衡的方法和系统，该方法和系统通过提供至少一个扩展序列部分，以及向扩展序列插入循环冗余以形成发射的基带序列。 本发明还提供一种用于将多个接收样本从至少一个扩展序列部分转换成多个频域采样的方法和系统，确定频域采样的多个频域均衡权重，以及确定时域信号 基于频域均衡权重和频域样本估计。

公开(公告)号：US20040013084A1

公开(公告)日：2004-01-22

申请号：US10198487

申请日：2002-07-18

Applicant: MOTOROLA, INC.

Inventor： Timothy A. Thomas ,  Vijay Nangia ,  Kevin L. Baum ,  Frederick W. Vook

IPC: H04J011/00

CPC classification number: H04L27/2605 ,  H04L25/0226 ,  H04L25/03006 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03522

Abstract: A receiver for implementing a training prefix modulation method in response to a reception of a signal propagating through a channel is disclosed. The signal as received includes training blocks with each training block having a data inter-block-interference therein, and data blocks with each data block having a training inter-block-interference therein. The signal is selectively reconstructed to provide a circular appearance of the channel over the data blocks. Specifically, an estimate of the training inter-block-interferences is generated and subtracted from the data blocks. And, an estimate of the data inter-block interferences is generated and added to the data blocks.

Abstract translation: 公开了一种用于响应于通过信道传播的信号的接收来实现训练前缀调制方法的接收机。 所接收的信号包括训练块，其中每个训练块在其中具有数据块间干扰，以及每个数据块在其中具有训练块间干扰的数据块。 该信号被选择性地重构以提供数据块上的信道的圆形外观。 具体地，生成训练块间干扰的估计并从数据块中减去。 并且，生成数据块间干扰的估计并将其添加到数据块。

公开(公告)号：US20030123381A1

公开(公告)日：2003-07-03

申请号：US10035027

申请日：2001-12-28

Applicant: Motorola, Inc.

Inventor： Xiangyang Zhuang ,  Frederick W. Vook ,  Timothy A. Thomas

IPC: H04J011/00 ,  H04B007/204

CPC classification number: H04L5/0023 ,  H04B7/04 ,  H04B7/0613 ,  H04B7/0837

Abstract: A datastream of bits (which may itself be comprised of a plurality of datastreams as derived from a plurality of sources) are coded (21) and then interleaved (12) across a plurality of transmitters (25 and 26) and a plurality of subcarriers (27) as supported and shared by the transmitters. If desired, the bits can be mapped to corresponding symbols prior to transmission. The resultant information is transmitted simultaneously by the transmitters using the shared channel of subcarriers. Upon reception, the received signals are de-interleaved and decoded to recover the original datastream for each sources.