Code-domain spread spectrum (CDSS) correlation embodiments for wireless and radar transceivers with the dual purposes of in-band jammer rejection and transmitter-to-receiver self-interference suppression. The encode/decode schemes may be employed at different locations on the TRx paths such as TRx front-end and/or in the baseband, for different TR transceiver architectures such as I/Q TRx, MIMO/phase array TRx and polar TRx. The encoder may be placed in the baseband digital unit and the decoder may be placed in front-of-the LNA in the RF domain for easy encoder implementation in the digital domain while protecting the receiver path from interferences. Group delay filters and/or tunable time delays can be employed to compensate for a signal path delay in a radar TRx. Signals coded with a correlated code sequence and synchronized with the encoder in the transmitter may be decoded and restored at the receiver while the in-band jammers and self-interference can be suppressed.

A method for suppressing a spurious signal in a payload signal supplied by a receiving antenna of a payload of a satellite. The satellite also includes an array of measurement antennas supplying measurement signals. The measurement signals are combined with the payload signal. Reference weighting coefficients for weighting the measurement signals are determined as a function of the combined signals. A reference beam is formed by combining the measurement signals weighted based on the reference weighting coefficients. Anti jamming weighting coefficients for weighting the payload signal and the reference beam are determined. An anti jammed beam is formed by combining the payload signal and the reference beam weighed based on the corresponding anti jamming weighting coefficients.

A spectrum sharing system includes an advanced beacon (e.g. a low latency RF link) as part of an information sharing subsystem. The advanced beacon signal carries radar spectrum transmission schedule in an obfuscated way such as not to reveal the geolocation of the radar. The information sharing subsystem directs nodes, such as cell phones, to share spectrum based on spectrum sharing instructions contained in the advanced beacon. The spectrum sharing system permits out-of-band sharing of spectrum white space, as well as sharing of in-band spectrum gray space.

Embodiments of the disclosure relate to a fifth generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond the fourth generation (4G) communication system, such as long term evolution (LTE) are provided. The method for managing a channel in a wireless local area network (WLAN) system includes detecting a radar signal and determining an optimal channel based on history information of a channel and the detected radar signal.

A method for suppressing a spurious signal in a payload signal supplied by a receiving antenna of a payload of a satellite. The satellite also includes an array of measurement antennas supplying measurement signals. The measurement signals are combined with the payload signal. Reference weighting coefficients for weighting the measurement signals are determined as a function of the combined signals. A reference beam is formed by combining the measurement signals weighted based on the reference weighting coefficients. Anti jamming weighting coefficients for weighting the payload signal and the reference beam are determined. An anti jammed beam is formed by combining the payload signal and the reference beam weighed based on the corresponding anti jamming weighting coefficients.

A fog network gateway includes at least one wireless communication interface, at least one cellular communication interface, and at least one wireline communication interface. The fog network gateway further includes connectivity logic configured to provide connection between a remote device and at least one local device via at least one of the wireless, cellular, and wireline communication interfaces, fog networking logic configured to form a fog network with the at least one local device for transmitting data thereto, and bandwidth aggregation logic configured to aggregate available bandwidth from at least two of the wireless, cellular, and wireline communication interfaces to ensure adequate bandwidth for data transmission between the remote device and the at least one local device. The fog network gateway further includes artificial intelligence logic configured to analyze data received from the at least one local device via the wireless, cellular, and wireline communication interfaces, and take appropriate action in response to the analysis.

An electrochemical gas sensor (10) includes a housing (20) and with at least one electrode (21, 22). The housing (20) has a gas inlet (23). An at least strongly acidic, liquid electrolyte (30) is present in the gas sensor (10). The electrolyte (30) partly wets the electrode (21, 22). Provisions are made in such a gas sensor (10) for the electrolyte (30) to contain an additive that contains at least one surfactant. An electrolyte (30) is also provided for a gas sensor (10), which electrolyte (30) contains at least one surfactant as an additive.

Techniques for providing low-cost and effective jammer rejection for an amplifier is disclosed. The amplifier includes an input node and an output node, a first transistor and a second transistor, a load circuitry, an inductor, and a capacitor. A first terminal of the first transistor is coupled to a ground. A second terminal of the first transistor is coupled to a first terminal of the second transistor. A second terminal of the second transistor is coupled to the output node. The load circuitry is coupled between a power supply and the second terminal of the second transistor. A first terminal of the inductor is coupled to the ground through a first switch. A first terminal of the capacitor is coupled to the first terminal of the second transistor and a second terminal of the capacitor is coupled to a second terminal of the inductor.

An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.

Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by 180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.