Massive MIMO for next generation wireless systems

  title={Massive MIMO for next generation wireless systems},
  author={Erik G. Larsson and Ove Edfors and Fredrik Tufvesson and Thomas L. Marzetta},
  journal={IEEE Communications Magazine},
Multi-user MIMO offers big advantages over conventional point-to-point MIMO: it works with cheap single-antenna terminals, a rich scattering environment is not required, and resource allocation is simplified because every active terminal utilizes all of the time-frequency bins. However, multi-user MIMO, as originally envisioned, with roughly equal numbers of service antennas and terminals and frequency-division duplex operation, is not a scalable technology. Massive MIMO (also known as large… 

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