扰码

浅谈TD-SCDMA系统的扰码优化

Initial Discussion on TD-SCDMA System Scrambling Code Optimization

WCDMA系统中的扰码规划

Scrambling Code Planning for WCDMA System

本文通过引进子块分割的思想，将扰码bit均匀插入到信号序列中。

By introducing sub-block division thought , we insert scramble bit into signal sequences equably .

3G移动通信复扰码技术的缺陷研究

The Research for Disadvantage of Complex-Scrambled Code Technique in 3G Mobile Communication

并行扰码器设计与FPGA实现

Parallel Scrambler Design and FPGA Implement

并行扰码模块的FPGA设计

FPGA Design of Parallel Scramble Module

ATM接口中扰码器和信头误码校正模块的研究

Study on Scrambler and HEC Module in ATM Interface

TD-SCDMA标准扩频扰码的原理和实现

The principle and realization of spread spectrum scrambler in TD-SCDMA standard

并行SDH扰码器/解扰器的设计

The design of parallel SDH scrambler / de scrambler

DVB系统中扰码发生器的FPGA实现

FPGA Implementation of Pseudo-random Generator in DVB System

WCDMA无线网络规划中的扰码规划问题

Issues on Scrambling Code Planning in WCDMA Wireless Network Planning

WCDMA无线网络扰码规划原理与应用

Scramble Code Planning Principle and Application of WCDMA Radio Network

TD-SCDMA与WCDMA扰码规划比较

Comparison of Scrambling Code Plan in TD-SCDMA and WCDMA System

TD-SCDMA下行同步码分析及扰码规划探讨

The Analysis of TD-SCDMA SYNC-DL Code and Discussion on Scrambling Code Planning

TD-SCDMA中的扰码性能分析及分配算法

Performance Analysis and Distribution Algorithm of Scrambling Code in TD-SCDMA

在高速传输系统如SDH中，需要用到并行扰码技术。

In high speed transmission system such as SDH , parallel scrambling technique is required .

TD-SCDMA系统中扰码资源的规划研究

Study of Scrambling Code distribution in TD-SCDMA System

在同步数字系列（SDH）的集成系统中，需要用到并行扰码技术。

Parallel scrambling techniques is required in the integrated system of Synchronous Digital Hierarchy ( SDH ) .

WCDMA目标小区搜索过程可以分为时隙同步、帧同步和扰码识别。

The cell search of WCDMA can be divided into slot synchronization , frame synchronization and scrambling code identification .

CDMA通信系统接收机的初始同步包括PN码同步、符号同步、帧同步、和扰码同步等。

Initial synchronisms of CDMA communication system receiver include PN code sync , symbol sync , frame sync , sync of scramble code , and so on .

由于WCDMA和TD-SCDMA的扰码组成有着根本性的区别，本文对两个系统扰码规划考虑的主要因素进行了深入的研究。

According to the peculiarity of scrambling code in TD-SCDMA and WCDMA system , the paper analyses main factors which influencing scrambling code plan to wireless network .

在对码资源分析的基础上，对比了WCDMA和TD-SCDMA规划特点的区别，得出了WCDMA和TD-SCDMA系统扰码规划应该遵循的不同原则。

Basing on comparing charac-teristic of wireless network between TD-SCDMA and WCDMA , the paper concludes the different rules of scrambling code plan in TD-SCDMA and WCDMA system .

研究了SDH帧结构、帧定位、映射与复用结构、指针调整、扰码与解扰等相关内容。2.SDH传输系统中误码测试与指针分析。

Relevant contents of SDH transmission system , such as frame structure , frame alignment , mapping and multiplexing structure , pointer adjustment , de / scrambling code , etc.2 .

TD-SCDMA系统更是采用了复扩频和Walsh码加权因子、专用复扰码的应用理论和实现方案。

In the TD-SCDMA standard , the principle and realization of complex spectrum spreading , weighting factor for Walsh code , and dedicated complex scrambling code are even adopted .

通过数学中码相关性的定义和计算方法，对TD-SCDMA系统扰码的相关性以及扰码和扩频码生成的复合码相关性进行了分析。

According to the peculiarity of code resource in TD-SCDMA system , the paper analyses the characteristic of scrambling code , brings forward a technical term , complex code group .

公共导频信道的捕获是WCDMA系统3步同步小区搜索算法的第3步，它给出对基站主扰码的判决信息。

The acquisition of CPICH ( common pilot channel ) provides the primary scrambling code of one base station which is the third step of cell search algorithm in WCDMA systems .

完成字节处理功能的电路包括从卷积解码输出后到传输流解复用的所有部分，由解交织、RS解码、解扰码和格式转换等模块组成。

The circuit to fulfill the byte processing function includes all parts between the modules on convolutional decoding and transfer stream de-multiplexing , consisting of the modules on data de - interleaving , RS decoding , data de-scrambling and format transforming .

由于扩频增益太小，扰码的部分自相关特性不理想，造成多径干扰（ISI）不能被有效抑制，所以传统的RAKE接收机的性能不能满足3GPP系统的要求。

Multi-path interference can not be suppressed effectively because of weak partial autocorrelation of scrambling code and low spreading gain . Thus , the performance of conventional RAKE receiver can 't meet the requirement of 3GPP .

分析了3G复扰码的作用后发现它将引入QAMI和Q两个子信道间的准正交地址码干扰，会导致系统容量的下降。

In this paper , we find 3G complex-scrambled code will produce quasi-orthogonal address code between I and Q channels in QAM , which can cause interference and result in the decline of system capacity during analyzing the function of complex-scrambled code .

其次针对PAPR的发展现状，将现有的几种降低PAPR的方法分为两大类，即信号扰码法和信号畸变法。

Aim at the PAPR development present condition the next in order , is divided into existing several kinds method that lowers the PAPR two major type , namely the signal code method and signal mutation method .