K. Nishimori et al., A novel configuration for realizing automatic calibration of adaptive array using dispersed SPDT switches for TDD systems, IEICE TR CO, E84B(9), 2001, pp. 2516-2522
This paper proposes a hardware configuration using only single pole dual th
row (SPDT) switches to realize the previously proposed automatic calibratio
n method using transmitting Signals (ACT) for the adaptive array in TDD com
munication systems. The proposed configuration obtains the same calibration
values as the conventional ACT does while reducing the number of switch br
anches. The transmission pattern using the proposed calibration method is a
lso presented based on an experimental adaptive array testbed in an actual
microcell environment. The experimental results show that the ideal radiati
on pattern formation is achieved by employing the proposed calibration meth
od in an environment with a moving terminal station and where arriving co-c
hannel interference exists.