Abstract: The disclosure involves a device and a method of generating a self-interference cancellation signal for a full-duplex communication device. The device is configured to: detect a strength value of a self-interference signal; adjust a strength value of a first reference signal to the strength value of the self-interference signal to generate a second reference signal; adjust the second reference signal according to a predetermined adjustment parameter corresponding to each of a circle of phase angle values respectively to generate a plurality of third reference signals; determine a difference between each of the third reference signals and a receiving signal of the full-duplex communication device including the self-interference signal; and determine one of the third reference signals that corresponds to the smallest of the differences as a self-interference cancellation signal for canceling the self-interference signal.

Abstract: A wireless communication device and a digital self-interference estimation method thereof are provided. The wireless communication device, at respective timings, receives a plurality of self-interference signals and generates a plurality of ideal transmitting signals. The wireless communication device calculates a signal adjusting vector based on the self-interference signals and the ideal transmitting signals at different timings. The wireless communication device generates a main ideal transmitting signal at a main timing, and calculates, based on the signal adjusting vector, a main self-interference signal corresponding to the main timing according to the received self-interference and the main ideal transmitting signal.

Abstract: An FUR receiver network device and an FDR data transmission method thereof are provided. The receiver network device is used in a network system, and the network system further includes a transmitter network device. There is an FDR connection between the receiver network device and the transmitter network device in an unlicensed band. The receiver network device receives a radio signal in the unlicensed band and retrieves a transmitter signal of the transmitter network device from the radio signal. The receiver network device calculates a differential signal between the radio signal and the transmitter signal and determines whether a signal energy of the differential signal is less than a threshold. If positive, the receiver network device and the transmitter network device perform an FDR data transmission therebetween.

Abstract: A stackable UTOPIA switching device for use in an Asynchronous Transfer Mode switch is provided to connect to more digital subscriber lines (DSL). The inventive UTOPIA switching device can work along or be arranged in a tree-like hierarchy to connect to more DSLs. The UTOPIA switching device comprises an Up-link end and a down-link end. The down-link end can connect to 31 slave multiplexers or physical layers at the most. The up-link end can connect to master USD or slave USD. Both the up-link end and the down-link end have three input queues and an output queue for storing the cells. The cells are stored in the input queues and the output queues according to the control of a priority queuing logic circuits.