Improved DMT systems with multiple time domain equalization
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
DFT(discrete fourier transform)based discrete multitone (DMT) transceivers have achieved great success in high speed data transmission. When the cyclic prefix is no shorter than the channel impulse response (CIR), the DMT system is ISI (intersymbol interference) free. For the channels with very long CIR, such as DSL loops, timedomain equalizer (TEQ) is typically added at the receiver to shorten the impulse response and improve performance. This paper proposes a filter banks approach to design the TEQ to maximize the bit rate. A DMT system is introduced with a pair of complex conjugating TEQs. For the design and implementation costs, the scheme shows the best performancepriceratio.
