公开(公告)号：WO2003065608A1

公开(公告)日：2003-08-07

申请号：PCT/US2003/002734

申请日：2003-01-29

Applicant: QUALCOMM, INCORPORATED

Inventor： SUBRAHMANYA, Parvathanathan ,  CLARK, Kevin J.

IPC: H04B1/707

CPC classification number: H04B1/7085 ,  H04B7/0613 ,  H04B2201/70701 ,  Y02D70/40 ,  Y02D70/444

Abstract: Techniques for time tracking diversity pilots are disclosed. In one aspect, an early (462) and a late (482) energy calculation is made on each incoming symbol using a first pilot sequence for despreading (452, 458). The difference between the two energies (464) is used to drive a tracking loop (490), which generates a time reference for producing a first pilot estimate and a second pilot estimate (640), the two estimates used for demodulating data (630). In another aspect, the early and late energies are made including a plurality of incoming symbols, the number of which corresponds to the number of symbols in a run of positive or negative values in an orthogonalizing sequence. The orthogonalizing sequence is used to generate a second pilot sequence from a first pilot sequence, the resulting second pilot sequence being orthogonal to the first. These aspects have the benefit of simplifying the hardware or processing steps required for transmit diversity time tracking, resulting in cost savings, power savings, simplicity of design, and the like.

Abstract translation: 公开了用于时间跟踪分集导频的技术。 在一个方面，使用用于解扩的第一导频序列（452,458）对每个输入符号进行早（462）和晚（482）能量计算。 两个能量之间的差异（464）用于驱动跟踪环路（490），其产生用于产生第一导频估计和第二导频估计的时间参考（640），用于解调数据的两个估计值（630） 。 在另一方面，早期和晚期能量包括多个输入符号，其数目对应于在正交序列中正或负值的运行中的符号数量。 正交化序列用于从第一导频序列生成第二导频序列，所得到的第二导频序列与第一导频序列正交。 这些方面具有简化发送分集时间跟踪所需的硬件或处理步骤的优点，从而节省成本，节省功率，简化设计等。

公开(公告)号：EP1472805A1

公开(公告)日：2004-11-03

申请号：EP03710787.7

申请日：2003-01-29

Applicant: Qualcomm, Incorporated

Inventor： SUBRAHMANYA, Parvathanathan ,  CLARK, Kevin J.

IPC: H04B1/707 ,  H04B7/06

CPC classification number: H04B1/7085 ,  H04B7/0613 ,  H04B2201/70701 ,  Y02D70/40 ,  Y02D70/444

Abstract: Techniques for time tracking diversity pilots are disclosed. In one aspect, an early and a late energy calculation is made on each incoming symbol using a first pilot sequence for despreading. The difference between the two energies is used to drive a tracking loop, which generates a time reference for producing a first pilot estimate and a second pilot estimate, the two estimates used for demodulating data. In another aspect, the early and late energies are made including a plurality of incoming symbols, the number of which corresponds to the number of symbols in a run of positive or negative values in an orthogonalizing sequence. The orthogonalizing sequence is used to generate a second pilot sequence from a first pilot sequence, the resulting second pilot sequence being orthogonal to the first. These aspects have the benefit of simplifying the hardware or processing steps required for transmit diversity time tracking, resulting in cost savings, power savings, simplicity of design, and the like.

Abstract translation: 公开了用于时间跟踪分集导频的技术。 在一个方面，使用第一导频序列对每个输入符号进行早期和晚期能量计算以进行解扩。 两个能量之间的差异被用于驱动跟踪环路，其产生用于产生用于解调数据的两个估计的第一导频估计和第二导频估计的时间基准。 在另一方面，早期和晚期能量被制成包括多个输入符号，其数目对应于在正交化序列中的正值或负值的运行中的符号数量。 正交化序列用于从第一导频序列生成第二导频序列，所得到的第二导频序列与第一导频序列正交。 这些方面具有简化发送分集时间跟踪所需的硬件或处理步骤的优点，从而节省成本，节省功率，简化设计等。