Transport capacity for networks of interfering multiple-access channels

We analyze the distance-weighted rate achievable in wireless networks that utilize multiple antennas and multi-user links. We give the transport capacity of vector multiple-access channels, and use this network topology at the physical layer of an ad-hoc network to obtain achievable distance-weighted rate regions for a multiple-antenna wireless network. These regions are obtained by considering interfering multiple-access in all possible link configurations. We give an analytic upper bound on the capacity and show that in networks with an asymptotically large number of nodes the throughput grows with the number of antennas, and depends on the expected path loss between nodes. Numerical examples agree with the analysis and show the benefit of interfering multiple-access over interfering point-to-point links for a uniform per-node power constraint.