公开(公告)号：US20050122947A1

公开(公告)日：2005-06-09

申请号：US10731688

申请日：2003-12-09

Applicant: Haifeng Wang ,  Jing Xu ,  Ming Chen ,  Shixing Cheng

Inventor： Haifeng Wang ,  Jing Xu ,  Ming Chen ,  Shixing Cheng

IPC: H04B7/216 ,  H04L20060101 ,  H04L5/02 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04L25/03159 ,  H04L5/026 ,  H04L27/2607 ,  H04L2025/03522 ,  H04L2025/03617

Abstract: In code division multiple access communications wherein a plurality of data streams carrying a plurality of transmit symbols are spread by a plurality of assigned spread code, the data streams are divided into a plurality of data blocks and a plurality of prefixes in symbol-level are added to the data blocks prior to the data streams being spread and combined for transmission. At the receive side, the prefixes are removed from the received data stream in the time domain and the prefix-removed data stream is converted into a transformed signal in the frequency domain. A feed-forward filter is used to implement a joint equalization and despreading operation by element-by-element multiplications in frequency domain. A feedback filter is used to remove the intersymbol interference and update the feed-forward filter through a feedback loop.

Abstract translation: 在码分多址通信中，其中携带多个发送符号的多个数据流由多个分配的扩展码扩展，将数据流分成多个数据块，并且添加符号级中的多个前缀 在数据流被传播和组合用于传输之前到数据块。 在接收侧，在时域中从接收的数据流中去除前缀​​，并将前缀去除的数据流转换成频域中的变换信号。 前馈滤波器用于通过频域中的逐个元素乘法来实现联合均衡和解扩操作。 反馈滤波器用于去除符号间干扰，并通过反馈回路更新前馈滤波器。

公开(公告)号：US07110352B2

公开(公告)日：2006-09-19

申请号：US10731688

申请日：2003-12-09

Applicant: Haifeng Wang ,  Jing Xu ,  Ming Chen ,  Shixing Cheng

Inventor： Haifeng Wang ,  Jing Xu ,  Ming Chen ,  Shixing Cheng

IPC: H04J11/00

CPC classification number: H04L25/03159 ,  H04L5/026 ,  H04L27/2607 ,  H04L2025/03522 ,  H04L2025/03617

Abstract: In code division multiple access communications wherein a plurality of data streams carrying a plurality of transmit symbols are spread by a plurality of assigned spread code, the data streams are divided into a plurality of data blocks and a plurality of prefixes in symbol-level are added to the data blocks prior to the data streams being spread and combined for transmission. At the receive side, the prefixes are removed from the received data stream in the time domain and the prefix-removed data stream is converted into a transformed signal in the frequency domain. A feed-forward filter is used to implement a joint equalization and despreading operation by element-by-element multiplications in frequency domain. A feedback filter is used to remove the inter-symbol interference and update the feed-forward filter through a feedback loop.

Abstract translation: 在码分多址通信中，其中携带多个发送符号的多个数据流由多个分配的扩展码扩展，将数据流分成多个数据块，并且添加符号级中的多个前缀 在数据流被传播和组合用于传输之前到数据块。 在接收侧，在时域中从接收的数据流中去除前缀​​，并将前缀去除的数据流转换成频域中的变换信号。 前馈滤波器用于通过频域中的逐个元素乘法来实现联合均衡和解扩操作。 反馈滤波器用于消除符号间干扰，并通过反馈回路更新前馈滤波器。