# Simple Antenna Diversity with inherit directional information for SDMA operation - PowerPoint PPT Presentation

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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

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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

### 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)

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)

• “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

• Choice of an ideal beam pattern (no side and back lobes)

• Amplitude of the pattern

• “α“ parameter controls the antenna beamwidth

### Transfer function

• At each realisation all beam’s orientation are performed

• Discrete transfer function

• Influence of the environment width on the fades

### 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