Abstract:
Spectrum sharing has been considered as a most
promising solution to improve the spectrum efficiency of nextgeneration wireless networks. In particular, non orthogonal
spectrum sharing allows the m ultiple operators to simultaneously
use the available frequency hands, which leads to degradation
of signal to interference ratio (SIR) at the intended receivers.
To improve the SIR, we have proposed fractional frequency
reuse (FFR) based structure for non-orthogonal spectrum shared
(NOSS) systems. The coverage probability and average rate
expressions are obtained for the proposed FFR based NOSS
systems, and it is revealed that the proposed spectrum shared
system ensures higher sum rate in comparison to no spectrum
shared system, without any significant degradation in coverage
probability. In particular, our analysis shows that FFR based
NOSS system achieves 33% higher rate as compared to the case
of no spectrum shared systems, however only 7% decrement is
seen in coverage probability.
