Large-scale ad hoc networks with rate-limited infrastructure: Information-theoretic operating regimes

The impact and information-theoretic limits of infrastructure support with rate-limited wired links are analyzed in hybrid ad hoc networks, where multi-antenna base stations (BSs) are deployed and the rate of each BS-to-BS link scales at an arbitrary rate relative to the number of randomly located wireless nodes. For the operating regimes with respect to the number of BSs and the number of antennas per BS, we first analyze the minimum rate of each BS-to-BS link, C_bs, required to guarantee the capacity scaling for the network using infinite-capacity backhaul links. We then identify the operating regimes in which the required rate C_Bs scales much slower than 1. We also show the achievable throughput scaling for the case where the rate of each BS-to-BS link scales lower than C_Bs.