Abstract: Systems, methods, apparatuses, and computer program products for radio channel pattern matching. One method may include receiving, at an antenna panel, at least two configured transmission configuration indicator states for simultaneous multiple input multiple output reception; for each of the at least two configured transmission configuration indicator states for simultaneous reception from one or more transmission reception points, sweeping at least one narrow beam receiving one or more repeated reference signals received from the one or more transmission reception points; and, based upon at least one spatial radio multipath channel characteristic of the one or more repeated reference signals carrying each transmission configuration indicator state, selecting at least one antenna element of the antenna panel to form a group of antenna elements and control the group of antenna elements to direct at least one beam.

Abstract: A pulse-listen electronic article security (EAS) system for detecting the presence of a security tag within a detection zone is disclosed. The EAS system includes a transmitter for radiating a first electromagnetic signal into the detection zone. The first electromagnetic signal is a time sequence of RF bursts emitted during each of a plurality of contiguous frame intervals in which the duration of each of the frame intervals is one of a plurality of different values. The EAS system also includes a receiver synchronized with the transmitter for receiving a second electromagnetic signal re-radiated from a security tag in the detection zone in response to the first electromagnetic signal. The receiver provides an output signal if a security tag is detected.

Abstract: In a theft protection system, particularly for a shop area, several exit passages with individual antenna systems are surveyed by means of a single transmitter for the transmission of electromagnetic interrogation signals and a single receiver for reception of resonance signals generated by unauthorized removal of a good, the antenna system for all the exit passages being connected to the transmitter and the receiver through multiplexers. A central control unit controls the multiplexers so as to actuate the antenna systems in successive time frames, whereby only one antenna system is made operative at a time. With each exit passage is associated an alarm device which is only activated for an alarm release from an alarm-actuating circuit connected to the control unit in case of compliance with at least one positive and one negative alarm criterion.