ACHIEVING MOBILITY FOR DVB-T BY SIGNAL PROCESSING FOR DOPPLER COMPENSATION
Outline
DVB-T
OFDM: how does it work?
Orthogonal Frequency Division Multiplexing - OFDM
OFDM Subcarrier Spectra
The Wireless Multipath Channel
The Multipath Channel
The Mobile Multipath Channel
Effects of Multipath Delay and Doppler
OFDM in a rapidly time-varying channel
Mobile Multipath Channel
Doppler Multipath Channel
PPT Slide
ICI caused by Doppler
DF Vector Channel Model
Channel Model
Theoretical Receiver: Matrix Inversion
Simplified Matrix Inversion
Performance of (Simplified) Matrix Inversion
- Theoretical Receiver - Subconclusion
Practical Receiver: Decision Feedback EQ
DFE Receiver
Practical receiver (1 iteration)
Channel Estimation block
Maximum attainable speed
Maximum attainable speed Rayleigh-fading channel
Complexity
Conclusions
Email: linnartz@per.nl
Home Page: http://ofdm.linnartz.net
