公开(公告)号：US20020126745A1

公开(公告)日：2002-09-12

申请号：US09804602

申请日：2001-03-12

Applicant: MOTOROLA, INC

Inventor： Daniel G. Prysby ,  Stefan Paun ,  Joseph L. Suttie III

IPC: H04K001/00

CPC classification number: H04J13/0048 ,  H04B1/7115

Abstract: A method and apparatus for signal combining within a communication system is provided herein. The output of RAKE fingers is combined via a chip combiner. The combined chip stream can be despread with the appropriate Walsh code (defining a particular channel). The resulting symbol stream can then be deinterleaved and decoded.

Abstract translation: 本文提供了一种在通信系统内信号组合的方法和装置。 RAKE手指的输出通过芯片组合器组合。 组合的码片流可以用适当的沃尔什码（定义特定频道）进行解扩。 然后可以对所得到的符号流进行解交织和解码。

公开(公告)号：US20020159501A1

公开(公告)日：2002-10-31

申请号：US09867236

申请日：2001-05-29

Applicant: MOTOROLA, INC

Inventor： Gregory Agami ,  Robert J. Corke ,  Daniel G. Prysby ,  Stefan Paun

IPC: H04K001/00 ,  H04B015/00 ,  H04L027/30 ,  H04L009/00 ,  H04L017/02

CPC classification number: H04J13/10 ,  H04L25/03866 ,  H04L27/34

Abstract: A long code scrambler has been provided to scramble the data bits prior to QAM mapping. Different data rates are accommodated by using different long code m-tuples sampled at the modulation symbol rate, where m equals 2, 4 or 6 for 4, 16 or 64 QAM, respectively. In order to support 1XEV-DV users employing multiple Walsh code channels, a long code 6-tuple sample is permutated, to further randomize the QAM symbols. As appropriate for the modulation order, 2, 4 or 6 bits of the permutated 6-tuple are applied to the data sequence. That is, in addition to randomizing the modulation symbols for a given code channel, each code channel will likely have unique QAM symbols at any given symbol time.

Abstract translation: 已经提供了长代码扰码器来在QAM映射之前对数据比特进行加扰。 通过使用以调制符号率采样的不同长码m元组分别适应不同的数据速率，其中m等于2,4或6分别为4,16或64个QAM。 为了支持采用多个沃尔什码信道的1XEV-DV用户，将长码6元组样本置换，以进一步随机化QAM符号。 适用于调制阶数，将排列的6元组的2,4或6位应用于数据序列。 也就是说，除了随机化给定代码信道的调制符号之外，每个代码信道在任何给定的符号时间将可能具有唯一的QAM符号。

公开(公告)号：US20020141482A1

公开(公告)日：2002-10-03

申请号：US09819398

申请日：2001-03-28

Applicant: MOTOROLA, INC

Inventor： Gregory Agami ,  Robert J. Corke ,  Ron Rotstein ,  Daniel G. Prysby

IPC: H04K001/00

CPC classification number: H04L7/0029

Abstract: A receiving communication device synchronizes to a timing reference of a transmitting communication device based on a determined timing error. The receiving communication device determines the timing error by processing a synchronization signal via a first stage filtering and interpolation process that includes predetermined coefficients and a second stage interpolation process that includes a minimal number of dynamically determined coefficients. By dividing the process into a predetermined coefficient stage and a dynamically determined coefficient stage, the receiving communication device is able to make timing adjustments in a more efficient manner, that is, at a lesser processor loading, than a communication device in which all filtering and interpolation coefficients are dynamically determined. In addition, by including a second order timing recovery loop, the receiving communication device is able to quickly and precisely respond to drifting of a timing reference differential between itself and the transmitting communication device.

Abstract translation: 接收通信设备基于确定的定时误差与发送通信设备的定时参考同步。 接收通信设备经由包括预定系数的第一级滤波和内插处理以及包括动态确定系数的最小数量的第二级内插处理来处理同步信号来确定定时误差。 通过将处理划分为预定的系数级和动态确定的系数级，接收通信设备能够以比其它所有过滤和/或调制方式的通信设备更有效的方式（即，处理器负载较小）进行定时调整 插值系数是动态确定的。 此外，通过包括二阶定时恢复循环，接收通信设备能够快速且精确地响应其自身与发送通信设备之间的定时参考差分的漂移。