LTE-Advanced

Relay technology is one of the key technologies for LTE-Advanced .

中继技术是下一代无线通信系统LTE-Advanced的关键技术之一。

Hence , it has become one of the key technologies of LTE-Advanced system .

因此，无线中继技术已成为LTE-Advanced系统的关键技术之一。

LTE-Advanced system demands more on bandwidth , user data rate and spectral efficiency .

LTE-Advanced系统在带宽、用户数据速率、系统频谱效率等方面提出了更高的需求。

Coordinated Multiple Point Transmission and Reception in LTE-Advanced Systems

LTE-Advanced系统中的协作多点传输技术

LTE-Advanced Key Technologies and Its Standardization Status

LTE-Advanced关键技术及标准化进展

3GPP LTE-Advanced is a high data rates , low delay and packet-based mobile communications system .

3GPPLTE-Advanced是一个高数据率、低时延和基于全分组的移动通信系统。

Integration Research of TD-LTE 、 LTE-Advanced and WiMAX Systems

TD-LTE、LTE-Advanced系统与WiMAX系统的融合研究

Therefore , multiple antenna detection and channel equalization technology are both very important in the study of LTE-Advanced uplink .

因此多天线检测及信道均衡技术的研究对LTE-Advanced上行链路而言非常重要。

One of the core issues of LTE-Advanced wireless communication system is how to provide higher data transmission rates within the limited spectrum resources .

如何利用有限的频谱资源，提供更高的数据传输速率以满足人们的需求是LTE-Advanced技术面临的核心问题之一。

Recently , MIMO and CA have become the hot issue in wireless communication research , and the core technology of LTE-Advanced system .

两者已经逐渐成为当前无线通信技术领域的研究热点，同时也是LTE-Advanced系统的核心技术。

LTE-Advanced has been identified as a new generation international mobile communication standards by ITU ( International Telecommunication Union ) .

2010年10月20日，LTE-Advanced标准被国际电信联盟无线通信部门确定为新一代移动通信（4G）的国际标准。

As a further evolution of the 3GPP LTE , LTE-Advanced is the focus of the current research .

作为3GPPLTE进一步演进的LTE-Advanced是目前的研究重点。

LTE-Advanced and Key Technologies

LTE-Advanced及其关键技术

GPP brought forward the LTE-Advanced techniques to meet the performance guideline , which ITU proposed for IMT-Advanced system .

为了满足ITU为IMT-Advanced系统提出的性能指标，3GPP提出了LTE-Advanced技术。

In LTE-Advanced , a Relay Node is placed between two radio interfaces , i.e. Uu and Un .

在LTE-A中，中继节点被放置在两个无线接口之间：Uu接口和Un接口。

LTE-Advanced has introduced a number of new technologies in order to reduce the delay of transmission , improve the date rate and expand the system capacity .

LTE-Advanced引入了一些新技术，致力于降低传输时延、提高传输速率、扩大系统容量，以更低的成本获得更大的网络覆盖。

This paper states the principles of MIMO and OFDM , depicts the characteristics and configurations of LTE-Advanced and its channel model .

本文介绍了MIMO和OFDM的原理，叙述了LTE-Advanced系统特征和配置，以及相应的仿真信道。

To attain higher data transmission rate , on the one hand , many innovative technologies based on MIMO-OFDMA are adopted by LTE / LTE-Advanced system .

为了达到更高的传输速率，一方面，LTE/LTE-Advanced系统在以MIMO-OFDMA为基础的同时采用了许多新的技术。

LTE-Advanced system , not just single-user MIMO , also introduces a collaborative user virtual MU-MIMO ( Multi-user MIMO ) technology .

在LTE-Advanced系统中不仅仅是单用户MIMO，还引入了多协作用户的虚拟MIMO（Multi-UserMIMO）技术。

Relay system , due to its functions of extending the cell coverage and improving the system capacity , also has been a hot research filed in LTE-Advanced .

中继（Relay）系统能扩大小区覆盖，提高系统容量，因此也成为LTE-Advanced的热点研究方向之一。

Then , on the basis of the study of LTE reference signal , this dissertation studies the normal CP and extended CP in LTE-Advanced system .

然后在研究了LTE参考信号的基础上，对LTE-Advanced系统的常规CP和扩展CP进行了研究。

In the paper , we compare the throughput performance of downlink JT-CoMP system and SU - / MU-BF adaptive scheme in LTE-Advanced system .

本文对LTE-Advanced系统中的CoMP技术的性能进行了研究。对于下行系统，通过系统级仿真比较了SU-/MU-BF自适应方案和JT-CoMP的吞吐量性能。

LTE-Advanced technology does not change the core technology of the LTE standard physical layer , but only make some functional and technical enhancements on the basis of the LTE .

演进的LTE-Advanced不改变LTE标准物理层的核心技术，只是在LTE的基础上进行功能完善和技术增强，上行链路的增强主要包括增强的多址接入技术和增强的多天线技术。

The coherent detection and demodulation of LTE / LTE-Advanced systems rely on the channel coefficients . Therefore , it is important to estimate the channel information by using reference signal .

LTE/LTE-Advanced作为下一代高速移动通信系统，在其对数据进行相干检测和解调时都需要知道系统的信道传输系数，因此，利用参考信号对信道进行估计就显得尤为重要了。

In order to mitigate ICI , coordinated multiple-point transmission and reception ( CoMP ) has been adopted in 3GPP LTE-Advanced systems .

为了有效抑制小区间干扰，3GPP提出在LTE-Advanced系统中引入协作多点传输/接收（CoMP）技术。

In order to further meet the requirements of seamless coverage , higher data rate for wireless users , 3GPP is working on the standardization of LTE-Advanced system and its evolving system .

为了进一步满足无线用户对无缝覆盖、更高数据速率业务的需求，3GPP正在研究和制定LTE-A系统的后续演进标准。

LTE-Advanced system uplink multiple-access technology is SC-FDMA ( Signal Carrier-Frequency Division Multiple Access ) technology which is based on lower PAPR ( Peak to Average Power Ratio ) .

其上行链路多址技术是基于具有较低峰均比的单载波频分多址接入（SC-FDMA）技术。

The efficient spectrum utilization of MIMO and low PAPR characteristic of SC-FDMA have made MIMO SC-FDMA become LTE / LTE-Advanced standard access scheme for uplink transmission .

MIMO高效率的频谱利用率和SC-FDMA的低峰均比特性，使得MIMOSC-FDMA成为LTE/LTE-Advanced上行传输的标准接入方案。

Introduce the relay technology into traditional cellular network , it can expand the traditional cellular network coverage area , improve the system throughput . Relay technology has introduced into LTE-Advanced and WiMAX .

传统蜂窝网络中引入中继技术，可以扩大覆盖范围，提升小区的吞吐量，近年来随着移动通信技术的飞速发展，中继技术的作用越来越受到关注，WiMAX与LTE-Advanced都引入了中继技术。

As the smooth evolution of LTE , LTE-Advanced ( LTE-A ) is able to provide higher peak rate , less control and user plane latency as well as better mobility support .

作为LTE的平滑演进，LTE-A能够提供更高的峰值速率，较小的控制面和用户面时延，更好的移动性管理。