1 research outputs found
Characterization of SINR Region for Multiple Interfering Multicast in Power-Controlled Systems
This paper considers a wireless communication network consisting of multiple
interfering multicast sessions. Different from a unicast system where each
transmitter has only one receiver, in a multicast system, each transmitter has
multiple receivers. It is a well known result for wireless unicast systems that
the feasibility of an signal-to-interference-plus-noise power ratio (SINR)
without power constraint is decided by the Perron-Frobenius eigenvalue of a
nonnegative matrix. We generalize this result and propose necessary and
sufficient conditions for the feasibility of an SINR in a wireless multicast
system with and without power constraint. The feasible SINR region as well as
its geometric properties are studied. Besides, an iterative algorithm is
proposed which can efficiently check the feasibility condition and compute the
boundary points of the feasible SINR region.Comment: 25 pages, 4 figures, submitted to IEEE Trans. Inform. Theor