PDA

View Full Version : Download Performance Evaluation of LTE Downlink with MIMO Techniques (thesis)



ahmedtaha
2011-11-09, 05:54 AM
hi all


TABLE OF CONTENTS
Abstract……………………………………………………………………………………………………………………….….iii
Acknowledgement…………………………………………………………………………………………………………….…iv
Dedication…………………………………………………………………………………………………………………….….v
Tables of Contents……………………………………………………………………………………………………………….vi
List of Figures…………………………………………………………………………………………………………………...viii
List of Tables…………………………………………………………………………………………………………………...…x
Acronyms and Notation Description……………………………………………………………………………………….....…xii
1. Introduction ................................................................................................................................................................................ 1
1.1 Background and general overview .................................................................................................................................. 1
1.2 Overview of the Evolved UMTS and main concepts. ...................................................................................................... 2
1.2.1 Evolved UMTS Concepts ........................................................................................................................................ 2
1.2.2 Design goals for Long Term Evolution .................................................................................................................... 3
1.3 Enabling technologies for LTE ....................................................................................................................................... 4
1.4 Thesis Motivation ............................................................................................................................................................ 5
1.5 Thesis Outline ................................................................................................................................................................. 5
2. The 3GPP LTE Physical Layer and Air Interface ...................................................................................................................... 6
2.1 Basic Concepts ................................................................................................................................................................ 6
2.2 The 3GPP LTE System Description ................................................................................................................................ 7
2.3 3GPP LTE Air Interface Technologies ............................................................................................................................ 8
2.3.1 Orthogonal Frequency Division Multiplexing .......................................................................................................... 8
2.3.2 Orthogonal Frequency Division Multiple Access..................................................................................................... 8
2.3.3 Multiple in Multiple out (MIMO) Antennas ............................................................................................................. 9
2.4 Physical Layer Parameters for LTE ................................................................................................................................ 9
2.5 Modulation .................................................................................................................................................................... 10
2.6 Channel Coding ............................................................................................................................................................. 11
2.6.1 Channel Coding in LTE ......................................................................................................................................... 12
3. Radio Propagation Environment and Channel Modeling ......................................................................................................... 13
3.1 Introduction ................................................................................................................................................................... 13
3.2 The Radio Propagation Environment ............................................................................................................................. 13
3.2.1 Fading .................................................................................................................................................................... 14
3.2.2 Multipath Propagation ........................................................................................................................................... 14
3.3 Rayleigh Fading Channel model ................................................................................................................................... 15
3.4 ITU Channel Model ...................................................................................................................................................... 16
3.5 MIMO Channel ............................................................................................................................................................. 17
3.6 Physical Channels ......................................................................................................................................................... 18
4. MIMO and OFDM in LTE ...................................................................................................................................................... 20
4.1 MIMO Antenna Array/Configuration ............................................................................................................................ 20
4.2 MIMO Transmission Schemes ...................................................................................................................................... 21
4.2.1 Diversity Schemes ................................................................................................................................................. 21
4.2.2 Spatial Multiplexing ............................................................................................................................................... 23
4.3 OFDM ........................................................................................................................................................................... 25
4.4 OFDMA ........................................................................................................................................................................ 27
4.4.1 Resource Allocation ............................................................................................................................................... 27
4.5 MIMO Detection Schemes ............................................................................................................................................ 30
4.5.1 Zero Forcing........................................................................................................................................................... 30
4.5.2 Sphere Decoding (SD) ........................................................................................................................................... 31
5. Simulation Model and Results ................................................................................................................................................. 32
5.1 System Model Layout ................................................................................................................................................... 32
5.2 Results and Analysis ..................................................................................................................................................... 33
5.2.1 Performance Analysis and Comparism of Flat-fading vs. ITU Pedestrian B Channel with SSD and ZF detection. 33
5.2.1.1 Flat-fading Channel vs. ITU Pedestrian B Channel with Soft Sphere Detection ............................................... 33
5.2.1.2 Flat-fading Channel vs. ITU Pedestrian B Channel with Zero Forcing Detection ............................................. 40
5.2.2 Performance Analysis and Comparism of SSD vs. ZF detection in Flat-fading and ITU Pedestrian B Channels. 46
5.2.2.1 SSD vs. ZF Detection in a Flat-fading Channel .................................................................................................. 46
5.2.2.2 SSD vs. ZF Detection in ITU Pedestrian B Channel .......................................................................................... 52
5.3 Summary of Simulation Results .................................................................................................................................... 58
6. Conclusion and Future Work ................................................................................................................................................... 59
6.1 Conclusion ..................................................................................................................................................................... 59
6.2 Future work ................................................................................................................................................................... 59
References .................................................................................................................................................................................... 60


* *
***************------------------------***************
if you like it plz add REPUTATION & thx




NO PASS




BRs
21867


21868

ltecity
2011-11-09, 02:51 PM
if you Not able to Download Pls. Find Link for this Doc,

http://www.ziddu.com/download/17238741/rformanceEvaluationofLTEDownlinkwithMIMOTechniques.zip.html (http://www.ziddu.com/download/17238741/rformanceEvaluationofLTEDownlinkwithMIMOTechniques.zip.html)

Enjoy Buddy !!!

labviewlover
2011-11-10, 08:35 AM
direct link

http://www.bth.se/fou/cuppsats.nsf/all/16055ab6ca3a2c41c125782f004d74c2/$file/Performance_Evaluation_of_LTE_Downlink_with_MIMO_Techniques.pdf