Sectored receiver model for calculation of the impulse response on IR wireless indoor channels using Monte Carlo based ray-tracing algorithm

B. R. Mendoza; S. Rodriguez; R. Perez-Jimenez; O. Gonzalez; A. Ayala

doi:10.1117/12.608307

30 June 2005 Sectored receiver model for calculation of the impulse response on IR wireless indoor channels using Monte Carlo based ray-tracing algorithm

B. R. Mendoza, S. Rodriguez, R. Perez-Jimenez, O. Gonzalez, A. Ayala

Author Affiliations +

Proceedings Volume 5837, VLSI Circuits and Systems II; (2005) https://doi.org/10.1117/12.608307
Event: Microtechnologies for the New Millennium 2005, 2005, Sevilla, Spain

Abstract

The indoor optical channel simulation can significantly benefit the design of high performance infrared (IR) systems, but requires algorithms and models that accurately fit the channel characteristics. One of the limitations of the IR links is the intersymbol interference caused by multipath dispersion. For fixed emitter and receiver locations, multipath dispersion is completely characterized by the channel impulse response. Therefore, to have an algorithm and a propagation model that allow us to determine the impulse response for different IR links is necessary. The use of angle-diversity receivers makes possible the reduction of the impact of ambient light noise, path loss and multipath distortion, in part by exploiting the fact that they are often received from different directions than the desired signal. Basically, there are three ways to get angle-diversity detection: using conventional, imaging or sectored receivers. In contrast to previous works, we present a model for sectored receivers, that is, a set of photodiodes placed in hemispheric form, upon which a Monte Carlo based ray-tracing algorithm allows us to obtain the impulse response and to study those optical links that are characterized by the use of sectored receivers. Using the obtained results, it is possible to establish those parameters of the sectored receiver structure that better performances present with respect to the IR channel features: the path loss and the rms delay spread.

Citation Download Citation

B. R. Mendoza, S. Rodriguez, R. Perez-Jimenez, O. Gonzalez, and A. Ayala "Sectored receiver model for calculation of the impulse response on IR wireless indoor channels using Monte Carlo based ray-tracing algorithm", Proc. SPIE 5837, VLSI Circuits and Systems II, (30 June 2005); https://doi.org/10.1117/12.608307

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KEYWORDS

Receivers

Monte Carlo methods

Reflection

Computer simulations

Infrared radiation

Geometrical optics

Infrared imaging

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