lte-a

A New Interference Calculation Method for LTE-A System

LTE-A系统中一种新的干扰计算方法

Relay is one of the key techniques in the LTE-A system .

中继技术是LTE-A系统的一项重要候补关键技术。

The subject of this paper is research and implementation of radio link monitoring algorithm in LTE-A system .

本论文的研究课题是LTE-A系统中无线链路监测算法的研究与实现。

The scheduling strategy in LTE-A system with carrier aggregation ( CA ) technology is analyzed .

研究了载波聚合技术下的子载波调度方案。

While long term evolution advanced ( LTE-A ) wireless system will be widely used in the future .

而高级长期演进（LTE-A）系统也必将是未来通信系统的大势。

OFDM communication systems is the necessary part of LTE and LTE-A systems in the future .

正交频分复用通信系统是未来LTE以及LTE-A系统必不可少的组成部分。

Then it introduces a multicell joint scheduling algorithm in LTE-A system based on proportional fair algorithm .

在研究比例公平算法的基础上，提出了一种多小区联合调度算法。

Handoff Procedure Analysis of LTE-A System with Multi-carriers Aggregation

LTE-A载波聚合下的载波切换分析

As a communication standard in the future by 3GPP , LTE-A has become the focus of Chinese telecommunication industry .

LTE-A是3GPP推出的未来移动通信标准，已成为我国通信产业界关注的焦点。

Now , LTE-A has become the most important candidate standard of the fourth generation mobile communication system , IMT-Advanced .

目前，LTE-A已经成为第四代移动通信系统IMT-Advanced的重要候选标准。

LTE in some areas has been the official commercial and it will also evolve to LTE-A step by step .

LTE在一些地区已经正式商用，LTE也将慢慢向LTE-A演进。

Scholars brought network coding into LTE-A system with the original purpose of overcoming the shortcomings of Relay of half-duplex mode .

最初为了克服半双工模式中继的缺陷，学者们将其引入LTE-A系统。

LTE-A is the further evolution of LTE . It requires more cell average throughput and higher data rate of users in cell edge .

LTE-A是LTE的进一步演进，其对小区平均吞吐量和小区边缘用户的数据速率提出了更高的要求。

Simulation analyses show that the above-mentioned three kinds of algorithms in this paper can be improve average user throughput and edge user performance in LTE-A system .

仿真分析表明，本文研究的上述三种算法能够改进LTE-A系统的用户平均吞吐量和边缘用户性能。

Relay communication technology , which can expand communication coverage , improve edge user rate and balance network load , has become an important technology in LTE-A systems .

中继通信技术能有效扩大通信覆盖范围，提高边缘用户速率，增进网络负载均衡，已成为长期演进增强系统（LTE-A）中的重要技术。

We will have a clearly understanding of the pre-coding of the LTE-A through the introduction .

通过本文的介绍，使我们对LTE-A中基于码本的预编码技术有了更清楚的认识。

By introducing networking model of heterogeneous network , we concerned about the inter-cell interference problem caused on the main scene in LTE-A heterogeneous network .

在介绍异构网络组网模型后，关注LTE-A异构网络中主要干扰场景导致的小区间干扰问题。

After introducing CoMP mechanism in LTE-A system , both the average sector throughput and cell-edge users ' transmission rate have been greatly improved .

引进CoMP机制后，小区的平均吞吐量和边缘用户的传输速率得到了进一步的提升。

Relay is introduced to the LTE-A system as a low power and low cost network device , which will bring higher system capacity and greater network coverage for the cell .

中继作为一种低功率、低成本的网络设备被引入到LTE-A系统中，将为小区带来更高的系统容量和更大的网络覆盖范围。

With the purpose of meeting the LTE-A system requirement , 3GPP proposed several key techniques including relaying communication , carrier aggregation , and coordinated multi-point .

为了达到LTE-A系统需求，3GPP提出了中继传输、载波聚合和多点协作等关键技术。

The LTE system performance facilitates the development of LTE-A system , OFDM and MIMO as two key technologies of LTE-A system in each aspect meet a great challenge .

LTE系统的完善也使得LTE-A系统不断发展，OFDM和MIMO作为LTE-A系统中的两大核心技术在各个方面都遇到极大的挑战。

As one of the key technologies of LTE-A , relaying has drawn more and more attentions due to its advantages in improving throughput and increasing coverage .

无线中继（Relay）技术作为LTE-A的关键技术之一，以其在提高小区吞吐量和扩大覆盖范围等方面的优势获得了广泛的关注。

In the first chapter , we reviewed the development history of wireless cellular communication . In addition , we introduced the requirement of LTE-A system and the key techniques to meet the requirement .

本论文的结构如下：第一章简要的介绍了蜂窝通信的发展以及LTE-A系统的需求和达到需求所用的关键技术。

In the third chapter , we researched on the key techniques in LTE-A relay system , including multiple-access technique , link-adaptive technique , and resource-allocation technique .

第三章对LTE-A中继系统中的关键技术进行了介绍，包括多址技术、链路自适应技术、无线资源划分技术和接入切换技术，其中重点研究了无线资源划分技术。

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。

The frequency reuse factor of LTE-A system is one , which can effectively improve the spectrum efficiency . However , this will increase the system interference , thus will damage the performance of cell edge users .

LTE-A系统的频率复用因子是1，可以有效提升频谱利用率，但是会增大系统干扰，降低小区边缘用户的性能。

Simultaneously , LTE-A introduced some technology to improving the cell-edge UE performance , such as Relaying Technology ( relay ) and Coordinated Multi-point Transmission ( CoMP ) .

同时LTE-A引进了改善小区边缘用户性能的技术，如中继技术（relay）和多点协作传输（CoMP）。

Simulation results show that the scheme can effectively improve the accuracy of transmission . Finally , to improve Turbo decoding scheme on the receiver in LTE-A , an improved scheme based on rate matching is proposed .

通过仿真验证，该方案可有效地提高系统传输的正确率。本文最后对LTE-A接收端的Turbo译码方案进行改进，给出了基于速率匹配的译码改进方案。

Relay Node ( RN ) is introduced into the LTE-A system as a low-power and low-cost node . It aims at providing higher system capacity , greater coverage and lower cost of network construction .

中继节点（RN，RelayNode）作为一种低功率、低成本的网络节点被引入到LTE-A系统中，旨在为小区提供更高的系统容量、更大的网络覆盖和更低的网络建设成本。

In order to further improve the performance of LTE system , 3GPP released the requirement of LTE-Advanced ( LTE-A ) system in May 2008 , and then began to engage in specifications .

为了进一步提高LTE系统的性能，3GPP在2008年5月确定了LTE-A技术的需求，并开始着手对其进行标准化工作。