Abstract:

 We consider the use of multiuser diversity to maximize transmission
  distance in a wireless network. This differs from previous work on
  multiuser diversity, which focused mainly on increasing the data
  rate. We analyze the maximum achievable transmission distance
  in a geocasting scenario, in which any radio in a specified
  geographical area is an acceptable destination for a packet.
  Performance results are presented for Rayleigh fading and nonfading
  channels. To illustrate the benefits of multiuser diversity, we
  show that higher transmission distances can be achieved over fading
  channels than over nonfading channels if the density of radios is
 sufficiently high. We also illustrate one application of our results to
protocol design.