I understand that the purpose of using an equalizer is to shorten the Impulse Response of a channel.In most examples I have seen so far,equalization in done in the Z-domain.Now,I have an ADSL channel response from 1hz to 1.1MHZ.How can I convert this frequency response into the corresponding Z-transform response?In short,how can I design a matlab equalizer for this kind of channel?
Dear Sir
check this link
https://www.mathworks.com/help/symbolic/ztrans.html
Dear Yousif,
In ADSL equalization you may not need to make equalization in time domain. One of the benefits of multi tone modulation used in ADSL is to use frequency domain equalizer. This is accomplished by dividing your channel bandwidth into subchannels where every subchannel a modulated single tone. The equalization process is straight forward where you need only to divide the received tone by the frequency response of this specific subchannel. Assume foe example that your received tone has an amplitude r and phase phi, then you need only to divide this complex number by magnitude and phase of the subchannel response say a and theta to be r/a and the angle is phi-theta.
Most all multi tone modulation systems are equalized in frequency domain.
Best wishes
- Badges
- Science topic