Apparatus and methods remove a voltage offset from an electrical signal, specifically a biomedical signal. A signal is received at a first operational amplifier and is amplified by a gain. An amplitude of the signal is monitored, by a first pair of diode stages coupled to an output of the first operational amplifier, for the voltage offset. The amplitude of the signal is then attenuated by the first pair of diode stages and a plurality of timing banks. The attenuating includes limiting charging, by the first pair of diode stages, of the plurality of timing banks and setting a time constant based on the charging. The attenuating removes the voltage offset persisting at a threshold for a duration of at least the time constant. Saturation of the signal is limited to a saturation recovery time while the saturated signal is gradually pulled into monitoring range over the saturation recovery time.

Apparatus and methods remove a voltage offset from an electrical signal, specifically a biomedical signal. A signal is received at a first operational amplifier and is amplified by a gain. An amplitude of the signal is monitored, by a first pair of diode stages coupled to an output of the first operational amplifier, for the voltage offset. The amplitude of the signal is then attenuated by the first pair of diode stages and a plurality of timing banks. The attenuating includes limiting charging, by the first pair of diode stages, of the plurality of timing banks and setting a time constant based on the charging. The attenuating removes the voltage offset persisting at a threshold for a duration of at least the time constant. Saturation of the signal is limited to a saturation recovery time while the saturated signal is gradually pulled into monitoring range over the saturation recovery time.

The present invention relates to a WiFi network system. More specifically, a digital network & control unit (DNCU) which is a digital network controller in one WiFi access point (AP) and a WiFi radio unit (wRU) which is a radio signal transmitter are separated from each other, and common DNCUs in each WiFi AP are placed in an operating station. Thus, the common DNCUs are concentrated on one place and managed. In addition, since only the wRU is placed in outdoor and indoor WiFi service areas in which radio signals are actually transceived, the product price and the network investment cost and management cost can be reduced. To this end, a digital networking & control unit (DNCU) which includes a digital controller and a network processing unit and a WiFi radio service unit (wRSU) which includes a WiFi radio and an antenna unit are independently separated from each other and are connected to each other by a cable.

Systems, apparatus, and methods are disclosed for processing biomedical signals. An electrophysiology (EP) system includes a differential circuit to process the biomedical signals; a differential amplifier circuit to amplify an output of the differential circuit; an analog-to-digital converter to digitize an output of the differential amplifier circuit; a communication module to interface between the analog-to-digital converter and a digital processing stage having a plurality of signal modules; and at least one processor to execute the plurality of signal modules, applying digital signal processing to the output from the analog-to-digital converter, to extract features of interest of the biomedical signals.

Systems, apparatus, and methods are disclosed for processing biomedical signals. An electrophysiology (EP) system includes a differential circuit to process the biomedical signals; a differential amplifier circuit to amplify an output of the differential circuit; an analog-to-digital converter to digitize an output of the differential amplifier circuit; a communication module to interface between the analog-to-digital converter and a digital processing stage having a plurality of signal modules; and at least one processor to execute the plurality of signal modules, applying digital signal processing to the output from the analog-to-digital converter, to extract features of interest of the biomedical signals.

A communication system is provided. The communication system includes a at least one baseband controller configured to process signals in a baseband frequency band. The communication system also includes at least one radio unit that is physically remote from the at least one baseband controller. Each radio unit includes a plurality of virtual radio units (VRUs) in a physical housing of the respective radio unit. Each radio unit also includes a fronthaul interface configured to communicate with the at least one baseband controller using a packet-based protocol on behalf of each VRU. Each radio unit also includes at least one radio frequency front end unit configured to transmit from and receive on behalf of each of the VRUs.

Examples described herein include systems and methods which include wireless devices and systems with examples of mixing input data with coefficient data. For example, a computing system with processing units may mix the input data for a transmission in a radio frequency (RF) wireless domain with the coefficient data to generate output data that is representative of the transmission being processed according to the wireless protocol in the RF wireless domain. A computing device may be trained to generate coefficient data based on the operations of a wireless transceiver such that mixing input data using the coefficient data generates an approximation of the output data, as if it were processed by the wireless transceiver. Examples of systems and methods described herein may facilitate the processing of data for 5G wireless communications in a power-efficient and time-efficient manner.

Methods and apparatuses for tuning source impedance for at least a portion of a receive path in a radio frequency front-end. An exemplary circuit generally includes a first tunable resonant circuit having an output coupled to an input of the at least the portion of the receive path and a second tunable resonant circuit having an input coupled to the output of the first tunable resonant circuit and to the input of the at least the portion of the receive path. The circuit also includes a first control input coupled to the first tunable resonant circuit and configured to adjust an impedance of the first tunable resonant circuit based on a frequency response of an output of the at least the portion of the receive path, and a second control input coupled to the second tunable resonant circuit and configured to adjust an admittance of the second tunable resonant circuit.

Systems, methods, and computer program product embodiments are disclosed for performing electrophysiology (EP) signal processing. An embodiment includes an electrocardiogram (ECG) circuit board configured to process an ECG signal. The embodiment further includes a plurality of intracardiac (IC) circuit boards, each configured to process a corresponding IC signal. The embodiment further includes a communications interface communicatively coupled to a remote device, and a processor, coupled to the ECG circuit board, the plurality of IC circuit boards, and the communications interface. The processor is configured to receive, via the communications interface, feedback from the remote device. The processor is further configured to control, via the communication interface, the remote device based on the ECG signal, the IC signals, or the feedback from the remote device.

Systems, methods, and computer program product embodiments are disclosed for performing electrophysiology (EP) signal processing. An embodiment includes an electrocardiogram (ECG) circuit board configured to process an ECG signal. The embodiment further includes a plurality of intracardiac (IC) circuit boards, each configured to process a corresponding IC signal. The embodiment further includes a communications interface communicatively coupled to a remote device, and a processor, coupled to the ECG circuit board, the plurality of IC circuit boards, and the communications interface. The processor is configured to receive, via the communications interface, feedback from the remote device. The processor is further configured to control, via the communication interface, the remote device based on the ECG signal, the IC signals, or the feedback from the remote device.