Characterization of SINR region for interfering links with constrained power

In this paper, a communication system including n interfering additive white Gaussian noise (AWGN) links is considered. Each transmitter uses a Gaussian codebook and each receiver only decodes the data of the corresponding transmitter. For the case that the transmit powers are subject to arbitrary linear constraints, a closed-form expression for the boundary points of the signal-to-interference-plusnoise-ratio (SINR) region is obtained. Moreover, when the channels are time-varying and the average powers are constrained, the zero-outage SINR region of the system is derived. In addition, a scenario where the demanded SINR of the users is out of the SINR region is considered. A common approach is to remove a subset of the users such that the demanded SINR can be provided for the remaining users; the removed users are serviced in a later time slot. With the aim of maximizing the number of serviced users in each time slot, a sub-optimal algorithm is developed, which outperforms the other a...

• Type: Journal
• Year: 2010
• Where: TIT
• Authors: Hajar Mahdavi-Doost, Masoud Ebrahimi, Amir K. Khandani
• Keywords: Additive White Gaussian Noise, Education, SINR, SINR Region, TIT 2010