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The Research of Key Link Level Technology in TDD-LTE System

Author: LiZuoZuo
Tutor: YangDaCheng
School: Beijing University of Posts and Telecommunications
Course: Communication and Information System
Keywords: HARQ Adaptive Modulation and Coding Modulation and coding scheme TDD-LTE system
CLC: TN929.5
Type: Master's thesis
Year: 2010
Downloads: 134
Quote: 0
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Abstract


With the rapid development of wireless communication , high-speed data services demand more urgent , the tension in the wireless resources is forcing people to find ways to improve the spectrum utilization , higher transmission in a limited band rate . A variety of techniques for the problem , the appropriate development , including link adaptation techniques , error control techniques , higher order modulation technology , and so on . For TDD-LTE system , this paper focused compare and analyze the impact on system performance HARQ technology . Through this comparison and analysis of the advantages and limitations of HARQ technology , to find a direction for future research . In order to maintain the integrity of the paper , the first chapter introduces mobile communications wireless fading channel characteristics and link-level simulation methodology to provide the necessary background knowledge for the back of adaptive technology . The second chapter a brief introduction of TDD-LTE system , and TDD-LTE link performance . The third chapter introduces the concept of link key technologies , basic principles , focused on discussion and analysis of the TDD-LTE system in HARQ performance . Chapter HARQ scheme based on adaptive modulation techniques will be adaptive modulation technique combined with HARQ technology program , and on this basis , a detailed analysis to compare the throughput performance of the application of the program system . The fifth chapter is a summary of the paper .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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