上行同步

TD-SCDMA系统中的智能天线和上行同步技术研究

On Smart Antenna and Uplink Synchronization Techniques for TD-SCDMA system

最后介绍了TD-SCDMA的上行同步的原理和检测算法。

The implement flowchart and basic principle of Uplink synchronization in TD-SCDMA are also presented .

在TD-SCDMA系统中采用了智能天线、联合检测、上行同步等关键技术来对抗信道中存在的多种干扰，有效的提高了系统性能。

It exploits many key technologies such as smart antenna , joint detection and uplink synchronization to combat interference in the channel and improves the system performance effectively .

简要介绍了TD-SCDMA系统所应用的联合检测、智能天线、动态信道分配、上行同步技术及接力切换等关键物理层技术。

This paper simply introduces the key technologies applied in TD-SCDMA , such as joint detection , smart antenna , dynamic channel allocation , uplink synchronization , relay handover , etc.

其目主要的是建立上行同步和为终端（UE，UserEquipment）分配时频资源。

The main purpose of random access isto build uplink synchronization and allocating frequency resource for UE ( UserEquipment ) .

以高空平台半再生式处理方式为关键技术，描述了基于高空平台的上行同步流程，并阐述了上行同步实现方案。

According to the key technique of semi-regeneration , the uplink synchronization process based on HAPS is designed and the uplink synchronization implementation scheme is given .

时间戳同步重点在于使得两个下行通道的时间戳是同步的，上行同步可以从两个下行通道中的任意一个获得，所有的上行可以与任何一个下行通道相关联。

The key of the design is how to synchronize the time stamps of two downstream channels . The upstream synchronization can be achieved from either of the two downstream channels .

基于TDM/TDMA的PON系统上行信元同步实现

Implementation of Synchronization With Upstream Cell of PON System Based on TDM / TDMA

ATM-PON上行突发同步设计与实现

Design and Realization of Burst Synchronization in Upward Channel of ATM-PON

正交频分多址接入系统的上行载波同步跟踪方法

Uplink carrier offset tracking method for orthogonal frequency division multiple access systems

在此基础上，对实现ATM-POH时存在的测距、上行突发同步、上行突发光接收和上行带宽动态分配等关键技术进行了探讨，并提出了解决这些难题的可行方法。

Based on this , some pivotal technologies , such as ranging , upstream burst synchronization , upstream burst optical reception and dynamic upstream bandwidth allocation , in ATM PON 's implementation are discussed , and the feasible methods for these problems are put forward .

小区搜索是进行同步过程的重要的一步，其算法的实现性能将影响到之后的上行接入和同步保持等过程。

As a key step in the process of synchronization , the performance of cell search algorithm also affects the following procedure of uplink access and synchronization maintenance .