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ACCEPTED PAPER IN ITW-2005, NEW ZEALAND 1 Mutual Information of Non-Coherent Rayleigh
 

Summary: ACCEPTED PAPER IN ITW-2005, NEW ZEALAND 1
Mutual Information of Non-Coherent Rayleigh
Fading Channels with Gaussian Input
Rasika R. Perera, Tony S. Pollock*, and Thushara D. Abhayapala*
Department of Information Engineering
Research School of Information Sciences and Engineering
The Australian National University, ACT 0200, AUSTRALIA
e-mail: rasika.perera@anu.edu.au
Abstract-- In this paper, the mutual information of a discrete
time Rayleigh fading channel is considered, where neither the
transmitter nor the receiver has the knowledge of the channel
state information. We derive a closed form expression for the
mutual information of single input single output Rayleigh fading
channel when the input distribution is complex Gaussian. We
compare the channel capacity and the mutual information
attained with Gaussian input using the derived closed form
expressions. Furthermore, we argue that the mutual information
is bounded by the signal to noise ratio with the simulation results
showing the sub optimality of Gaussian signalling in non-coherent
Rayleigh fading channels.

  

Source: Abhayapala, Thushara D. - Department of Information Engineering, Australian National University

 

Collections: Computer Technologies and Information Sciences