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 information for SDMA operation

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) information for SDMA operation

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) information for SDMA operation

  • “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 information for SDMA operation

  • 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 information for SDMA operation

  • At each realisation all beam’s orientation are performed

  • Discrete transfer function

  • Influence of the environment width on the fades


Jitter process
Jitter process information for SDMA operation

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