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A novel low-complexity multiuser adaptive modulation (MAM) scheme is proposed for uplink massive multiple input and multiple output systems with zero-forcing detection, which requires only slow-varying large-scale shadowing information for the users. Closed-form expressions are derived for the average spectral efficiency (ASE) and bit error outage (BEO). In addition, for MAM with joint power control,...
In this paper, we consider an uplink massive MIMO systems with dual-antenna users, and investigate the performance of several popular transmission schemes, such as orthogonal space-time block coding (OSTBC), transmit beamforming (TB) and transmit antenna selection (TAS). The achievable sum rate lower bound and asymptotic power scaling performance when M →∞ are presented, where M is the number of base...
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