The channel estimation algorithms for LTE downlink OFDMA system are introduced in detail.
针对LTE下行OFDMA传输系统介绍了信道估计技术。
So this thesis is engaged in the research of channel estimation technology for LTE downlink OFDMA system.
因此本文将重点围绕LTE下行OFDMA系统的信道估计技术展开研究。
Link adaptation transmission is a vital technology for OFDMA system, and it has great effect on the performance.
链路自适应传输是正交频分多址系统关键技术，对提升系统性能起到关键作用。
Compared with traditional single-user OFDM systems, synchronization technology for OFDMA system are more difficult.
相对于传统单用户的OFDM系统，OFDMA系统的同步技术遇到更大的困难。
A new semi-static interference coordination algorithm was proposed and have been simulated and verified. The OFDMA system level simulation platform was introduced.
在研究了多小区OFDMA系统资源分配的基础上，提出了一种新的半静态干扰协调算法并经过仿真验证。
In case of single-cell OFDMA system, the study ranges from single user power allocation, multi-user subcarrier scheduling to joint subcarrier and power allocation.
并重点从功率分配和子载波调度方面对OFDMA系统的资源分配进行了研究和仿真。
This paper focuses on carrier frequency offset estimation (CFO) and multiuser interference elimination in uplink OFDMA system based on generalized carrier assignment schemes.
本文针对上行链路任意分配子载波重点研究了载波频偏估计和多用户间干扰消除的方法。
Finally the system simulation results show that the proposed algorithm is robust and time efficient, and it is very feasible for OFDMA cellular systems, especially IEEE 802.20 OFDMA systems.
最后的系统仿真结果表明，该算法具有较高的鲁棒性和搜索效率，是适合于IEEE 802.20及其它OFDMA蜂窝系统的高效下行捕获和同步算法。
Secondly, a novel downlink acquisition and synchronization algorithm for IEEE 802.20 OFDMA system is proposed. The algorithm is composed of downlink frame detection and sector PN code identification.
其次，本文提出一种针对IEEE 802.20 OFDMA工作模式的下行捕获和同步算法，该算法分为下行帧头检测和扇区标识值识别两个步骤。
The second chapter describes the basic principle of the conventional OFDM and establishes a downlink OFDMA system model, which is the basis for researching synchronization technology for OFDMA system.
在第二章介绍了传统OFDM的基本原理，并建立了OFDMA系统的下行链路模型，在此基础上研究OFDMA系统的同步技术。
Most of the current OFDMA resource allocation algorithms targets on the spectrum utilization improvement in single system without considering the resource sharing for multisystem in the same area.
现有的OFDMA资源分配算法大都以提高单系统内的频谱利用率为目标，而对于同一区域内多系统间的资源共享问题未加考虑。
Most of the current OFDMA resource allocation algorithms targets on the spectrum utilization improvement in single system without considering the resource sharing for multisystem in the same area.
现有的OFDMA资源分配算法大都以提高单系统内的频谱利用率为目标，而对于同一区域内多系统间的资源共享问题未加考虑。
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