Abstract: A circuit for downlink/uplink operational mode switching in a TDD wireless communication system comprises a field-effect transistor operatively connected to a power amplifier on the downlink path of a RF front-end apparatus in a TDD wireless communication system, a first voltage generator connected to a large-value first resistor, a second voltage generator connected to a second resistor, a large-value hold capacitor, and a sample-and-hold circuit configured to be switched between a reception configuration, wherein the first voltage generator is connected to the gate of the field-effect transistor and the large-value capacitor is connected to the first voltage generator through the first resistor, and a transmission configuration, wherein the gate of the field-effect transistor is connected to the hold capacitor and the hold capacitor is connected to the second voltage generator through the second resistor.

Abstract: A wireless telecommunications base station that compensates for Doppler shift in each connected User Equipment. The base station deploys a plurality of parallel receivers, each with a given frequency offset above and below the carrier frequency. Each receiver performs a frequency shift on a common uplink signal, determines the quality of the frequency shifted uplink signal, and demodulates the frequency shifted uplink signal. A selector/combiner module generates a highest quality demodulated signal, which may be done by selecting the frequency shifted uplink signal or soft combining a subset of frequency shifted uplink signals having a sufficiently high quality.

Abstract: The wireless communications system comprises: a plurality of remote units, wherein each remote unit is configured to convert a respective RF signal into a plurality of time and frequency samples, perform a noise estimation corresponding to the plurality of time and frequency samples, compute a plurality of coefficients corresponding to the plurality of time and frequency samples that have an amplitude greater than at least a predefined threshold value, and multiply each of the plurality of coefficients by its corresponding time and frequency sample to create a plurality of weighted time and frequency samples; at least an intelligent switching unit, coupled to the plurality of remote units, wherein the intelligent switching unit is configured to receive the plurality of weighted time and frequency samples from each of the plurality of remote units, temporally align the pluralities of weighted time and frequency samples, compute a set of weighted sums of time and frequency samples and transmit the set of weight

Abstract: A reconfigurable beamformer comprising a digital signal processor; an ADC/DAC operatively connected to the digital signal processor; an analogue signal processor operatively connected to the ADC/DAC; an antenna array operatively connected to said analogue signal processor.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: A wireless telecommunications base station that compensates for Doppler shift in each connected User Equipment. The base station deploys a plurality of parallel receivers, each with a given frequency offset above and below the carrier frequency. Each receiver performs a frequency shift on a common uplink signal, determines the quality of the frequency shifted uplink signal, and demodulates the frequency shifted uplink signal. A selector/combiner module generates a highest quality demodulated signal, which may be done by selecting the frequency shifted uplink signal or soft combining a subset of frequency shifted uplink signals having a sufficiently high quality.

Abstract: A wireless telecommunications base station that compensates for Doppler shift in each connected User Equipment. The base station deploys a plurality of parallel receivers, each with a given frequency offset above and below the carrier frequency. Each receiver performs a frequency shift on a common uplink signal, determines the quality of the frequency shifted uplink signal, and demodulates the frequency shifted uplink signal. A selector/combiner module generates a highest quality demodulated signal, which may be done by selecting the frequency shifted uplink signal or soft combining a subset of frequency shifted uplink signals having a sufficiently high quality.

Abstract: The distributed Antenna System for massive MIMO applications, comprises: a plurality of Point of Interface modules connectable to a Baseband Unit and configured for converting a digital data flow coming from the Baseband Unit to RF signals and/or for converting incoming RF signals to a digital data flow to be sent to the Baseband Unit; a plurality of optical modules operatively connected to the plurality of Point of Interface modules and configured for performing an electro-optical conversion of the RF signals; a plurality of Remote Units operatively connected to the optical modules and to a plurality of antennas; in which the optical modules comprises a plurality of uplink paths separated from each other and provided with respective uplink outputs.

Abstract: The wireless communications system comprises: a plurality of remote units, wherein each remote unit is configured to convert a respective RF signal into a plurality of time and frequency samples, perform a noise estimation corresponding to the plurality of time and frequency samples, compute a plurality of coefficients corresponding to the plurality of time and frequency samples that have an amplitude greater than at least a predefined threshold value, and multiply each of the plurality of coefficients by its corresponding time and frequency sample to create a plurality of weighted time and frequency samples; at least an intelligent switching unit, coupled to the plurality of remote units, wherein the intelligent switching unit is configured to receive the plurality of weighted time and frequency samples from each of the plurality of remote units, temporally align the pluralities of weighted time and frequency samples, compute a set of weighted sums of time and frequency samples and transmit the set of weight

Abstract: The wireless communications system comprises: a plurality of remote units, wherein each remote unit is configured to convert a respective RF signal into a plurality of time and frequency samples, perform a noise estimation corresponding to the plurality of time and frequency samples, compute a plurality of coefficients corresponding to the plurality of time and frequency samples that have an amplitude greater than at least a predefined threshold value, and multiply each of the plurality of coefficients by its corresponding time and frequency sample to create a plurality of weighted time and frequency samples; at least an intelligent switching unit, coupled to the plurality of remote units, wherein the intelligent switching unit is configured to receive the plurality of weighted time and frequency samples from each of the plurality of remote units, temporally align the pluralities of weighted time and frequency samples, compute a set of weighted sums of time and frequency samples and transmit the set of weight

Abstract: A circuit for downlink/uplink operational mode switching in a TDD wireless communication system comprises a field-effect transistor operatively connected to a power amplifier on the downlink path of a RF front-end apparatus in a TDD wireless communication system, a first voltage generator connected to a large-value first resistor, a second voltage generator connected to a second resistor, a large-value hold capacitor, and a sample-and-hold circuit configured to be switched between a reception configuration, wherein the first voltage generator is connected to the gate of the field-effect transistor and the large-value capacitor is connected to the first voltage generator through the first resistor, and a transmission configuration, wherein the gate of the field-effect transistor is connected to the hold capacitor and the hold capacitor is connected to the second voltage generator through the second resistor.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: System having baseband units; a radio equipment controller module; radio equipment modules coupled to a physical antenna port having a slave port coupled to a master port of the radio equipment controller module or another radio equipment module. The radio equipment modules receive an uplink antenna-carrier stream from a physical antenna port and transmit the stream to its slave port and, if a master port is connected to another radio equipment module, it synchronizes and sums the stream with an uplink antenna-carrier stream from said master port, creating a summed uplink antenna-carrier stream transmitted to its slave port. The radio equipment modules receive a downlink antenna-carrier stream from the radio equipment controller module or another radio equipment module to its slave port for transmission to said physical antenna port and, if a master port is connected to another radio equipment module, forwards the downlink antenna-carrier stream to the master port.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: A wireless telecommunications base station that compensates for Doppler shift in each connected User Equipment. The base station deploys a plurality of parallel receivers, each with a given frequency offset above and below the carrier frequency. Each receiver performs a frequency shift on a common uplink signal, determines the quality of the frequency shifted uplink signal, and demodulates the frequency shifted uplink signal. A selector/combiner module generates a highest quality demodulated signal, which may be done by selecting the frequency shifted uplink signal or soft combining a subset of frequency shifted uplink signals having a sufficiently high quality.

Abstract: The fronthaul system for a wireless telecommunication network comprises: a plurality of baseband units; at least a radio equipment controller module coupled to the plurality of baseband units; a plurality of radio equipment modules coupled to at least one physical antenna port and provided with at least a slave port and at least a master port, wherein the slave port is coupled to a master port of the radio equipment controller module or to a master port of another radio equipment module, wherein each of the radio equipment modules is configured to receive an uplink antenna-carrier stream from a physical antenna port and to transmit the received uplink antenna-carrier stream to its slave port and, if it has a master port connected to another radio equipment module, it is configured to synchronize and sum the received uplink antenna-carrier stream with at least one uplink antenna-carrier stream received from said master port to create a summed uplink antenna-carrier stream and to transmit the summed uplink ante

Abstract: The radio equipment automatic redundant architecture comprises a plurality of Point of Interface units provided with: a Slave port able to receive a link; at least a Master port able to forward the link incoming in the Slave port; at least a Redundant port with same Slave port capabilities; wherein a first Point of Interface unit has the Slave port connected to a corresponding first Master port of a radio base station or similar device and the Master port connected to a Slave port of one of the others Point of Interface units, a second Point of Interface unit has the Redundant port connected to a corresponding second Master port of the radio base station or similar device and the Master port connected to a Redundant port of one of the others Point of Interface units.

Abstract: The distributed Antenna System for massive MIMO applications, comprises: a plurality of Point of Interface modules connectable to a Baseband Unit and configured for converting a digital data flow coming from the Baseband Unit to RF signals and/or for converting incoming RF signals to a digital data flow to be sent to the Baseband Unit; a plurality of optical modules operatively connected to the plurality of Point od Interface modules and configured for performing an electro-optical conversion of the RF signals; a plurality of Remote Units operatively connected to the optical modules and to a plurality of antennas; in which the optical modules comprises a plurality of uplink paths separated from each other and provided with respective uplink outputs.

Abstract: The wireless communications system comprises: a plurality of remote units, wherein each remote unit is configured to convert a respective RF signal into a plurality of time and frequency samples, perform a noise estimation corresponding to the plurality of time and frequency samples, compute a plurality of coefficients corresponding to the plurality of time and frequency samples that have an amplitude greater than at least a predefined threshold value, and multiply each of the plurality of coefficients by its corresponding time and frequency sample to create a plurality of weighted time and frequency samples; at least an intelligent switching unit, coupled to the plurality of remote units, wherein the intelligent switching unit is configured to receive the plurality of weighted time and frequency samples from each of the plurality of remote units, temporally align the pluralities of weighted time and frequency samples, compute a set of weighted sums of time and frequency samples and transmit the set of weight

Abstract: The wireless communications system comprises: a plurality of remote units, wherein each remote unit is configured to convert a respective RF signal into a plurality of time and frequency samples, perform a noise estimation corresponding to the plurality of time and frequency samples, compute a plurality of coefficients corresponding to the plurality of time and frequency samples that have an amplitude greater than at least a predefined threshold value, and multiply each of the plurality of coefficients by its corresponding time and frequency sample to create a plurality of weighted time and frequency samples; at least an intelligent switching unit, coupled to the plurality of remote units, wherein the intelligent switching unit is configured to receive the plurality of weighted time and frequency samples from each of the plurality of remote units, temporally align the pluralities of weighted time and frequency samples, compute a set of weighted sums of time and frequency samples and transmit the set of weight