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Table 3 Comparison of OW link topologies for indoor systems

From: A review of communication-oriented optical wireless systems

  Link type
  Point-to-point Diffuse Multispot diffusing
Link rate High Moderate Moderate
Implementation complexity Low Low High
Beam pointing Required (exact) Not-required Required (partial)
Beam blocking Yes No No
User mobility Limited High High
Dispersion None High Low
Path loss Low High Moderate
Impact of ambient noise Low High Low