Type of Document Master's Thesis Author Chan, Raymond Author's Email Address firstname.lastname@example.org URN etd-07232003-144922 Title Channel Prediction for Adaptive Modulation in Wireless Communications Degree Master of Science Department Electrical and Computer Engineering Advisory Committee
Advisor Name Title Buehrer, Richard Michael Committee Chair Pratt, Timothy J. Committee Member Woerner, Brain D. Committee Member Keywords
- Channel Prediction
- Pilot Symbol Assisted Modulation
- Rayleigh Fading
- Forward Error Correction
- Adaptive Modulation
- Channel Estimation
- Linear Prediction
Date of Defense 2003-07-15 Availability unrestricted AbstractThis thesis examines the benefits of using adaptive modulation and coding in terms of spectral efficiency and probability of bit error. Specifically, we examine the performance enhancement made possible by using linear prediction along with channel estimation in conjunction with adaptive modulation. We begin this manuscript with basic fundamentals of our study, followed by a detailed view of simulations, their results, and our conclusions from them. The study includes simulations in slow and moderately fast flat fading Rayleigh channels.
We present our findings regarding the advantages of using predictive measures to foresee the state of the channel and make adjustments to transmissions accordingly.
In addition to finding the general advantages of channel prediction in adaptive modulation, we explore various ways to adjust the prediction algorithm when we are faced with high Doppler rates and fast fading.
By the end of this work, we should have a better understanding of when channel prediction is most valuable to adaptive modulation and when it is weakest, and how we can alleviate the problems that prediction will have in harsh environments.
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access Ray_Thesis_5.pdf 1.85 Mb 00:08:32 00:04:23 00:03:50 00:01:55 00:00:09
If you have questions or technical problems, please Contact DLA.