engleski

Multireceiver infrared biotelemetry for monitoring ambulatory patients in biomechanical experimets

Infrared biotelemetry enables patient� s free moving in biomechanical measurements such as gait analysis. Low power transmitter gives nonuniform low irradiance, while there are strong noise and interference infrared radiation originated from ambient light sources. To improve signal to noise ratio of the diffuse, nondirected infrared link over the entire indoor environment, a diversity technique is applied. It consists of distributed multrireceiver system and logic unit (combiner) employing desired combination algorithm. We present experimental data of spatial noise and infrared signal distribution in a test room. According to the results, a multireceiver system with five receivers is organized and combiner with linear equal gain algorithm is used. Resulting received signal has uniform spatial distribution over the entire room.

Multireceiver Infrared Biotelemetry; Space Diversity

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