A vehicle including an antenna that receives a first signal and a second signal having different operating frequency bands is provided. An amplifying part of the antenna includes a first amplifier configured to amplify the first signal and a second amplifier configured to amplify the second signal. A receiving part includes a first tuner configured to tune the first signal amplified by the amplifying part and a second tuner configured to tune the second signal amplified by the amplifying part. A first switch connects the antenna to the first amplifier or the second amplifier, a second switch connects the amplifying part to the first tuner or the second tuner, an input part receives a channel from a user, and a controller individually operates the first switch and the second switch based on an operating frequency band of the received channel.

A method that incorporates aspects of the subject disclosure may include, for example, receiving digital data via a plurality of fiber optic cables, wherein the digital data represents a plurality of radio frequency signals received at a plurality of remote radio units via a plurality of uplink paths, wherein the first virtual processing system is configured to mitigate interference detected in one or more of the plurality of uplink paths, performing a plurality of measurements of the digital data to identify an interference condition associated with at least a portion of the plurality of uplink paths associated with the plurality of remote radio units; and providing updated digital data, according to the interference condition that is identified, to a second virtual processing system including at least one second virtual processor, wherein the second virtual processing system is configured to operate as one or more baseband units for providing cellular communication services. Other embodiments are disclosed.

A method and system for detecting PIM signals in a wireless communication base station are disclosed. According to one aspect, a method includes receiving radio frequency, RF, signals over a frequency band spanning a plurality of frequencies of signals transmitted by at least a first transmitter external to the base station and at least a second transmitter. The method includes determining frequencies at which signals are present among the received radio frequency signals. PIM signal frequencies are calculated based on the determined frequencies at which signals are present. The method includes determining whether the calculated PIM signal frequencies interfere with selected uplink channels.

The disclosed systems and methods are directed to wireless receiver systems for neutralizing the effects of received RF blocking signals. The configurations presented herein operate to receive RF signals containing a desired signal and a blocking signal, a first module, in communication with the receive RF signals along a first signal path and configured to extract a specimen of the received desired and blocking signals, and a second module, in communication with the first module along a second signal path to receive the desired signal and blocking signal specimens. The second module is configured to produce a replica of the blocking signal based on the blocking signal specimen, generate an anti-blocking signal based on the blocking signal replica, and introduce the anti-blocking signal to the received desired and blocking signals in which the anti-blocking signal destructively interferes to neutralize the received blocking signal.

An electronic messaging device includes a receiver configured to receive a message at one of a first operational frequency and second operational frequency. The messaging device can added to a message distribution group comprising a plurality of existing messaging devices. A test communication can be sent through a coupling to test an operation of the messaging device and confirming the addition of the messaging device to the message distribution group without communicating with the existing messaging devices.

An apparatus for adjusting a component in a receiver system to eliminate distortion. The apparatus may include a receiver system and a tuning circuit. The receiver system may process a tracking signal to generate an output signal. The tracking signal may include a radio frequency (RF) signal and a test signal. The processing of the first tracking signal may introduce a distortion into the output signal. The tuning circuit may be operatively coupled to the receiver system. The tuning circuit may determine an adjustment value and send the adjustment value to the receiver system. The receiver system may adjust a component of the receiver system using the adjustment value to eliminate the distortion in a second RF signal that is caused by the component.

A method that incorporates aspects of the subject disclosure may include, for example, obtaining, by a system comprising a processor, interference information associated with one or more physical resource blocks (PRBs) from each base station of a plurality of base stations. Further, the method can include determining, by the system, from the interference information a strategy for improving a PRB utilization of a first base station of the plurality of base stations. In addition, the method can include conveying, by the system, the strategy to at least one base station of the plurality of base stations. Other embodiments are disclosed.

An electronic messaging device includes a receiver configured to receive a message at one of a first operational frequency and second operational frequency. The messaging device can added to a message distribution group comprising a plurality of existing messaging devices. A test communication can be sent through a coupling to test an operation of the messaging device and confirming the addition of the messaging device to the message distribution group without communicating with the existing messaging devices.

A system for linearized-mixer interference mitigation includes first and second linearized frequency downconverters; a sampling analog interference filtering system that, in order to remove interference in the transmit band, filters the sampled BB transmit signal to generate a cleaned BB transmit signal; an analog interference canceller that transforms the cleaned BB transmit signal to a BB interference cancellation signal; and a first signal coupler that combines the BB interference cancellation signal and the BB receive signal in order to remove a first portion of receive-band interference.

A system for linearized-mixer interference mitigation includes first and second linearized frequency downconverters; a sampling analog interference filtering system that, in order to remove interference in the transmit band, filters the sampled BB transmit signal to generate a cleaned BB transmit signal; an analog interference canceller that transforms the cleaned BB transmit signal to a BB interference cancellation signal; and a first signal coupler that combines the BB interference cancellation signal and the BB receive signal in order to remove a first portion of receive-band interference.