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ML equalizer lower bound

Started by sair...@gmail.com December 12, 2006
Hi,
      I would like to derive the ML equalizer lower bound for frequency
selective fading channels , when the channel is modeled as FIR tapped
delay line with  complex Gaussin random variables as channel tap gains.
 I am not sure, whether there exisists a bound for this?
Any help in this is highly appreciated.

Best Regards,
-SaiRamesh.


sairamesh@gmail.com wrote:

> Hi, > I would like to derive the ML equalizer lower bound for frequency > selective fading channels , when the channel is modeled as FIR tapped > delay line with complex Gaussin random variables as channel tap gains. > I am not sure, whether there exisists a bound for this? > Any help in this is highly appreciated. > > Best Regards, > -SaiRamesh. >
Consider a channel as a variable filter which cuts off some energy from the spectrum of the signal. From here you can find the average loss of power of the signal due to fading. This gives you the ideal lower bound for the optimal ML demodulator. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com