公开(公告)号：AU2002248333A1

公开(公告)日：2002-08-12

申请号：AU2002248333

申请日：2002-01-11

Applicant: QUALCOMM INC

Inventor： RICK ROLAND ,  SUBRAHMANYA PARVATHANATHAN ,  BUTLER BRIAN ,  PATEL SHIMMAN ,  EKVETCHAVAT THUNACHATE

IPC: H04B7/06 ,  H04B7/08 ,  H04B1/707

Abstract: In an antenna diversity environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-negligible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time tracking loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different timing offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.

公开(公告)号：CA2434116A1

公开(公告)日：2002-08-08

申请号：CA2434116

申请日：2002-01-11

Applicant: QUALCOMM INC

Inventor： RICK ROLAND ,  BUTLER BRIAN ,  SUBRAHMANYA PARVATHANATHAN ,  PATEL SHIMMAN ,  EKVETCHAVAT THUNACHATE

IPC: H04B7/06 ,  H04B7/08 ,  H04B1/707

Abstract: In an antenna diverstiy environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-neglible multipath spacing, t he timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset f or demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time trackin loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with differen t times offsets for each finger. The preferred embodiment depends on the metho d used by the base station to multiplex the data onto multiple transmit antenn as.

公开(公告)号：WO02061963A3

公开(公告)日：2002-09-19

申请号：PCT/US0200682

申请日：2002-01-11

Applicant: QUALCOMM INC

Inventor： RICK ROLAND ,  SUBRAHMANYA PARVATHANATHAN ,  BUTLER BRIAN ,  PATEL SHIMMAN ,  EKVETCHAVAT THUNACHATE

IPC: H04B7/06 ,  H04B7/08 ,  H04B1/707

CPC classification number: H04B1/7085 ,  H04B1/7115 ,  H04B7/0667 ,  H04B7/0697 ,  H04B2201/70701

Abstract: In an antenna diverstiy environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-neglible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time trackin loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different times offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.

Abstract translation: 在天线多样化环境中，接收机手指的定时偏移基于接收到的基站发射信号峰值的定时偏移。 在具有不可忽略的多路径间隔的系统中，基站发射信号的接收峰值的定时偏移不一定在相同位置。 在一个实施例中，来自每个基站天线的信号的解调单元使用相同的偏移来基于定时偏移之前和定时偏移之后的导频信号采样来解调和确定误差信号。 误差信号被平均并由时间跟踪环路用于跟踪输入信号。 在另一个实施例中，来自每个基站天线的信号的解调单元独立地时间跟踪每个手指具有不同时间偏移的信号。 该优选实施例取决于基站用于将数据复用到多个发射天线上的方法。