Shimi Shilo

Green Cellular — Optimizing the cellular network for minimal emission from mobile stations

Wireless systems, which include cellular phones, have become an essential part of the modern life. However the mounting evidence that cellular radiation might adversely affect the health of its users, leads to a growing concern among authorities and the general public. Radiating antennas in the proximity of the user, such as antennas of mobile phones are of special interest for this matter. In this paper we suggest a new architecture for wireless networks, aiming at minimal emission from mobile stations, without any additional radiation sources. The new architecture, dubbed Green Cellular, abandons the classical transceiver base station design and suggests the augmentation of transceiver base stations with receive only devices. These devices, dubbed Green Antennas, are not aiming at coverage extension but rather at minimizing the emission from mobile stations. We discuss the implications of the Green Cellular architecture on 3G and 4G cellular technologies. We conclude by showing that employing the Green Cellular approach may lead to a significant decrease in the emission from mobile stations, especially in indoor scenarios. This is achieved without exposing the user to any additional radiation source.

Performance study of Green Cellular - An architecture for minimal emission from mobile stations

The mounting evidence, that cellular radiation may adversely affect the health of its users, results in growing concern among the general public. This concern only grows as cellular technologies become an essential part of modern life (mobile e-mail, social networking, etc.). Radiating antennas in the proximity of the user, such as antennas of mobile phones are of special interest for this matter. In this paper we study the performance of a recently proposed architecture for wireless networks, aiming at minimal emission from mobile stations, without any additional radiation sources. The new architecture, dubbed Green Cellular, abandons the classical transceiver base station design and suggests the augmentation of transceiver base stations with receive only devices. These devices, dubbed Green Antennas, are not aiming at coverage extension but rather at minimizing the emission from mobile stations. We employ indoor and outdoor propagation simulation tools and field experiments to study the expected impact of the Green Cellular architecture on emission from mobile stations. Our results reveal a significant, up to 50dB, decrease in emission power and respective exposure to radiation.