Multi User and Multi Cell Simulations

Spatial multiplexing of multiple users, i.e., Multi User Multiple-Input Multiple-Output (MU-MIMO), is considered as a promising technique in multi-antenna broadcast systems to achieve high spectral efficiencies by serving multiple users in parallel over the same time-frequency resources Weingarten, Steinberg and Shamai, IEEE Trans. Inf. Theor. 52:3936–3964, 2006; Gesbert, Kountouris, Heath Jr., Chae, and Slzer, IEEE Signal Process. Mag. 24:36, 2007 [1, 2]. In contrast to Single User Multiple-Input Multiple-Output (SU-MIMO), the potential multiplexing gain of MU-MIMO is only confined by the capabilities of the transmitter. Hence, with MU-MIMO the need for multiple antennas at the users is eliminated, facilitating the development of small and cheap user equipments.

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