Simple Antenna Diversity with inherit directional information for SDMA operation

1. 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

2. 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

3. 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

4. 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

5. Antenna pattern • Choice of an ideal beam pattern (no side and back lobes) • Amplitude of the pattern • “α“ parameter controls the antenna beamwidth

6. Transfer function • At each realisation all beam’s orientation are performed • Discrete transfer function • Influence of the environment width on the fades

7. 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