Millimeter-wave ad-hoc wireless access system - propagation characteristics in indoor environments

It is expected that the millimeter wave ad-hoc communication system will be used in places like cafeteria where room structure is complicated in addition to environments with comparatively few obstacles like conference rooms. Moreover, both communication between the personal computers on the desk and the communication system using an access point are considered as a variation of ad-hoc communication style. Since propagation path environments with millimeter-wave measurements have rarely been performed up to now, a conventional cafeteria in Japan was selected and measurement of the propagation characteristics in the 70 GHz band was executed.