Title :
Capacity of a Gaussian FIR linear relay network
Author :
Oechtering, Tobias J. ; Boche, Hollger
Author_Institution :
Heinrich Hertz Chair for Mobile Commun., Technische Univ. Berlin, Germany
Abstract :
The conceptual framework for a linear network code for a discrete time relay network with two network modes, additive white Gaussian noise, single antenna nodes, and time invariant flat fading channels and conditions for stable and finite impulse response is presented here. For fixed FIR linear network codes the capacity under sum power constraint is derived using the circular channel approach. The optimal input power spectrum density shows an interesting geometrical waterfilling interpretation, where the frequency dependent power allocation of the relay nodes causes a wavy water level.
Keywords :
AWGN; FIR filters; Gaussian channels; channel capacity; fading channels; mobile radio; Gaussian FIR linear relay network; additive white Gaussian noise; circular channel approach; discrete time relay network; finite impulse response; geometrical waterfilling interpretation; time invariant flat fading channels; Colored noise; Finite impulse response filter; Frequency dependence; Gaussian channels; Interference; Mobile communication; Network coding; Power system relaying; Relays; Resource management;
Conference_Titel :
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Print_ISBN :
0-7803-9305-8
DOI :
10.1109/WIRLES.2005.1549601