Studentische Arbeiten

Titel: Distributed Massive MIMO
Typ:
  • Masterarbeit
Betreuer:
Status: abgeschlossen

Hintergrund

With decreasing hardware cost and increasing demand for high data rates, massive MIMO has become a promising candidate for future wireless communications. An anticipated over-provisioning of antennas can be used for spatially orthogonalizing users in space. With "massive" MIMO, base stations employ a large number of antennas (e. g. 64 and more) while mobile terminals typically are assumed to have only one, or a few antenna(s). This leads to an increased sum rate of the cellular system. With smarter and faster connected devices (IoT), the possibility of a deconcentrated massive MIMO base station is increasing.

Problemstellung

Distributed massive MIMO is getting more and more possible with fiber backhauls and smarter environment objects (e. g. street lamps). These "new" antennas could be connected and used as a massive distributed base station where the processing could be done, e. g. in a cloud. For example if a user stands directly under a street lamp, the precoding should use the lamp as main antenna and thereby maximizing the sum rate. Therefore it is an interesing approach to look into the advantages and disadvantages of a distributed massive MIMO base station in comparison to concentrated massive MIMO.

Aufgabe

  • Read into precoding and antenna geometries
  • Create a system model to compare and evaluate concentrated and deconcentrated massive MIMO systems
  • Evaluate the system model
  • Simulate for a given scenario (Königstraße - 3D model of Stuttgart (Ref.: http://www.stuttgart.de/item/show/492022) a distributed and concentrated massive MIMO system

 

Sources:

  1. Cell-free Massive MIMO: https://arxiv.org/pdf/1602.08232.pdf
  2. Building Array: http://ieeexplore.ieee.org/document/6736761/#full-text-section
  3. Mass MIMO Irregular Antenna Arrays: https://arxiv.org/pdf/1604.04968.pdf
  4. Viability of Distributed Antennas: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6810508

Anforderung

 

  • Matlab
  • STWC