simple antenna diversity with inherit directional information for sdma operation
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Simple Antenna Diversity with inherit directional information for SDMA operation. Project group 997 : Julien Gonidec Thibaut Ingrain François Net Mauro Pelosi Aurélie Villemont. Supervisors: Patrick Eggers Chenguang Lu Censor: Jesper Ø. Nielsen.

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simple antenna diversity with inherit directional information for sdma operation

Simple Antenna Diversity with inherit directional information for SDMA operation

Project group 997:

Julien Gonidec

Thibaut Ingrain

François Net

Mauro Pelosi

Aurélie Villemont

Supervisors: Patrick Eggers

Chenguang Lu

Censor: Jesper Ø. Nielsen

jitter diversity simulation in a simplified environment
Jitter diversity simulation in a simplified environment

Steps of the simulation

  • Modelling a simplified indoor channel
  • Generation of an ideal antenna pattern
  • Jitter process description
  • Results and tendencies

Monte-Carlo simulations

  • the user’s location is randomly defined at each step
environment implementation 1
Environment implementation (1)

Clustered scattering

  • Investigations concentrated on rays from an unique cluster
  • AOA power distribution approximated by a Laplacian distribution PowerLaplace_a(θAOA)

Environment response

Where

  • The amplitude is defined by
  • The phase is defined by
environment implementation 2
Environment implementation (2)
  • “a“ parameter controls the shape of the environment

10-6 < a < 10-1

  • BWenv: half-power width of the mean environment response
  • Simulation of various type of environment by varying the a parameter
antenna pattern
Antenna pattern
  • Choice of an ideal beam pattern (no side and back lobes)
  • Amplitude of the pattern
  • “α“ parameter controls the antenna beamwidth
transfer function
Transfer function
  • At each realisation all beam’s orientation are performed
  • Discrete transfer function
  • Influence of the environment width on the fades
jitter process
Jitter process

We want to compare 3 different algorithms:

  • JRDA (Jitter with respect to the Reference Direction Algorithm)
  • BPP (best possible process algorithm)
  • FB (fixed beam algorithm) as a reference

Explanation of the JRDA process

  • Reference direction θrefk is found at the kth step
  • is compared to and
  • The orientation of the maximum value is chosen θpathk
  • is the whole the collected h module
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