Investigation of reception zone in a 60 GHz-band compact-range wireless access system using a large array antenna

A 60GHz-band compact-range wireless access system using a large array antenna can provide an uniform signal reception zone (less than 14 m distance from the antenna) and an almost multipath-free propagation environment. To evaluate the system performance, a wireless communication system for demonstration is constructed and the bit error rate (BER) and the signal-to-interference-plus-noise ratio (SINR) are measured. A wide and long communication zone with low BER is realized by adopting large array antennas in the access point. However, BER degrades especially for the distance less than 1 m. The characteristics of the coefficient S21 between the transmitting and receiving antennas in both frequency and time domains are measured. The time delay and the delay spread are analyzed, and the SINR is also compared with the signal-to-interference ratio.