Role of Channel Power in Sub-linear Capacity Scaling of MIMO Channels

摘要: Multi-antenna systems have been shown to offer a linear scaling of capacity under rich scattering conditions [1] [2]. The question correlated channel is still not well understood. Earlier results in [3] and [4] which showed Kronecker product correlation model D-connected respectively, correspond quadratic power with the number antennas. In this paper we show that per antenna fundamental quantity governs channels. We uniform scales as O(f(N)), where f(N) sub-linear function N , if only O(Nf(N)). Using virtual representation multi-antenna channels, relate result paths captured by arrays. It necessary sufficient resolvable physical environment (also independent degrees freedom matrix) scale O(Nf(N)) support an O(f(N)) capacity. Thus, our establish new regimes for MIMO