时分双工

该策略借助时分双工能调节上下行子帧切换点的特性，为承载不同业务负荷量的上下行，分配相应比例的资源数目。

Combined with the TDD character , TD-LTE system is able to adjust the sub-frame switching point , and makes corresponding proportion of the number of resources for the uplink and downlink which have different traffic load .

设计了时分双工码分多址系统级仿真平台，仿真分析了功率控制误差对120km/h车速的时分双工码分多址系统下行性能的影响。

A TDD / CDMA system level simulation platform . is devised . Based on the platform , the effect of power control error on the DL performance of TDD / CDMA is analyzed and simulated in the environment with velocity of 120 km / h.

时分双工CDMA收发讯机的同步方法

Practical Synchro Methods for a CDMA Transceiver

本收发机应用于4×4的MIMO系统，工作于时分双工方式。

This transceiver is applied to a 4 × 4 MIMO system , and works in FDD mode .

一种是基于时分双工（TDD）模式下最大信道增益而设计的；

One was based on time division duplex ( TDD ) mode ;

本文对时分双工-同步码分多址（TD-SCDMA-TimeDivision-synchronouscodedivisionmultipleaccess）系统的智能天线技术进行了全面、深入的研究。

The technology of smart antenna in the TD-SCDMA ( Time Division - Synchronous Code Division Multiple Access ) system is comprehensively and deeply studied .

作为3G系统中唯一一个使用时分双工的系统，它具备了许多频分双工系统所不具备的优点。

As the only system using Time Division Duplex in the 3G system , it has some advantages over systems of Frequency Divsion Duplex .

本文对TD-SCDMA通信基站的工程进行了分析，并且结合TD-SCDMA时分双工及使用了智能天线技术的特点，分析讨论了智能天线的电磁辐射计算方法。

It calculates the electromagnetic radiation of smart antenna using the time division duplex-specific and smart antenna technology which are unique for TD-SCDMA .

本文描述的是一个正交多进制扩频通信系统，系统采用时分双工的方式实现点对点的数据通信，使用了匹配滤波法接收以及Rake接收机。

Time duplex is adopted in this system to realize point to point communications including date and video , using matched filter and Rake receiver method .

并在此基础上，介绍了TDD（timeDivisionDuplex）时分双工技术，讨论了TDD协议的帧结构，并给出了时分双工通信的实现方法。

And on the basis of that , this paper introduces the TDD ( Time Division Duplex ), discusses the frame structure of the TDD protocol , and gives the way of realizing TDD .

TD-LTE采用时分双工的工作模式，适合根据非对称的上下行业务流量来动态分配信道。

TD-LTE uses time-division duplex working mode , and suits for dynamic distribution channel According to the asymmetry of network traffic .

最后一阶段是基于TD-SCDMA的时分双工（TDD）超3G（B3G）或者第4代移动通信系统阶段。

Phase 4 is the Beyond 3G ( B3G ) / Fourth Generation ( 4G ) mobile communication Time Division Duplex ( TDD ) system , based on TD-SCDMA .

TD-SCDMA系统属于时分双工系统，其帧同步技术是TD-SCDMA直放站系统的关键技术之一，本文提出功率检测同步与GPS同步两种可靠的帧同步方法。

TD-SCDMA system is a TDD system , in which the frame synchronization technology is one one of the key technologies . This paper has developed two reliable methods for frame synchronization , Power-detected-synchronization and GPS - synchronization .

本文在基于以TDD技术为基础的无线语音通信系统中，制定了时分双工通讯协议，并通过编程实现了无线语音双工通信。

On the base of wireless voice communication system which used TDD technology , constituted a time division duplex communication protocol in this paper . And was implement the communication protocol by the program .

本文设计的无线数传电台以用于GPS差分定位为出发点，采用FSK的调制方式，能在S频段以时分双工的工作模式完成数据的无线传输。

In this paper , the wireless data radio takes the GPS differential positioning as a starting point , takes the FSK modulation mode , can complete the wireless transmission of data in S frequency band with the time division duplex operation mode .

基于时分双工（TDD）技术的MIMO系统可以利用上下行信道的互易性，使得基站能够直接基于检测到的上行信道状态信息制定下行发射预处理策略而不需要额外的反馈开销。

By using channel reciprocity in time division duplex ( TDD ) MIMO systems , the base station ( BS ) can implement data transmitting pretreatment according to the channel state information ( CSI ) obtained by uplink measurement without additional feedback overhead .

介绍了射频和基带的硬件构成，设计了MSP430对数据进行采样的方法，阐述了基站和移动台之间建立同步数据链路的过程，给出了用软件实现时分双工的基本思路。

The technique of sampling the signal by MSP430 ; the process of the realization of the communication between the base station and the mobile phone ; the basic principle of the software design for realizing of the time dividing duplex communication .

在时分双工（TDD）系统中，通信双方基于信道互易原理，提取具有一致性的上下行信道特征，通过实时独立地生成密钥，从而避免密钥的传输，达到通信安全的目的。

In TDD system , communication terminals extract the identical channel characteristics based on channel reciprocity theory between uplink and downlink , and generate secret key independently in real time , this scheme can avoid transmission of and achieve the aim of secure communication .

在这一背景下，东南大学移动通信国家重点实验室提出了广义多载波时分双工混合多址（GMC-TDD-xDMA）无线传输技术。

National Mobile Communications Research Laboratory of Southeast University proposed General Multicarrier Time Division Duplex Hybrid Division Multiple Acesss ( GMC-TDD-xDMA ) radio transmission technology in this background .

时分双工蜂窝系统的智能天线研究和性能评估

A scheme and performance evaluations of smart antenna in TDD cellular system

一种适合时分双工环境的分组预约多址协议

A packet reservation multiple access protocol in time division duplex

功控误差对时分双工码分多址系统下行性能的影响

Effect of Power Control Error on the DL Performance of TDD / CDMA System

基于多用户检测技术的时分双工-码分多址系统上行链路容量研究

On the Capacity of Time Division Duplex-Code Division Multiple Access Uplink System with Multi-User Detection

时分双工环境下的分组预约多址（PRMA/TDD）协议及其性能

Packet Reservation Multiple Access Protocol in Time Division Duplex ( PRMA / TDD ) and Its Performance Analysis

本文提出了一个适合微蜂窝移动通信的时分双工方式下的分组预约多址协议&F-PRMA（Frame-basedPacketReservationMultipleAccess）。

A new Frame-based Packet Reservation Multiple Access ( F-PRMA ) protocol under time-division duplex is proposed for microcellular mobile networks .

提出了一种优化时分双工系统波束赋形块长的方案。

A scheme is proposed to optimize the beamforming block length for time division dup lex ( TDD ) systems in this paper .

然后是在广义多载波时分双工混合多址蜂窝移动通信系统中进行单载波分块传输系统的信道估计的实现。

Secondly , it implements the channel estimation of single carrier block transmit system in the General Multi-Carrier Time Diversion Duplex x-Divison Multiple Access ( GMC-TDD-xDMA ) cellular mobile communication system .

介绍了一种适用于时分双工蜂窝移动系统、基于非线性判决反馈均衡器和递归最小平方算法的环形自适应阵列天线。

A kind of 8 element circular adaptive array antenna is proposed to time division duplex cellular mobile system , based on non linear decision feedback equalizer and recursive least square algorithm .

它采用时分双工的模式，可以灵活的分配带宽资源，并能根据业务类型自适应的调整上、下行分配的时隙数，提高了频谱利用率。

It adopts time division duplex mode . It can be allocated bandwidth flexible and can adjust time slot base on different service types for uplink and downlink which increases bandwidth efficiency .

该系统采用了低码片速率、时分双工、智能天线、联合检测等关键技术，具有频谱利用率高、频谱使用灵活、适合开展数据业务、系统成本低等特点。

This system uses some key technology such as Low Chip Rate , Time Division Duplex , Smart Antennas and Joint Detection . The advantage of TD-SCDMA system includes : high frequency spectrum efficiency , flexible frequency using , applying to data service , low cost and so on .