Abstract:
A smart antenna system is provided for communicating wireless signals between a mobile device and a plurality of different fixed base stations using one or more channels and one or more beams. The smart antenna system includes a control subsystem, a radio transceiver and an antenna subsystem coupled to each other and adapted to perform scanning of one or more combinations of base stations, channels and beams using one or more test links established with one or more of the fixed base stations where the test links use at least some of the channels and the beams. A first combination of base station, channel and beam is selected based on the scanning; and a first operating link is established for transmitting a wireless signal to the selected base station using the selected channel and beam.
Abstract:
A smart antenna system is provided for communicating wireless signals between a mobile device and a plurality of different fixed base stations using different channels and different beams, said smart antenna system comprising a control subsystem, a radio transceiver and an antenna subsystem coupled to each other and adapted to perform scanning of different combinations of base stations, channels and beams using one or more test links established with one or more of said different fixed base stations, said one or more test links using at least some of the different channels and the different beams, select a first combination of base station, channel and beam based on the scanning, and establish a first operating link for transmitting a wireless signal to the selected base station using the selected channel and beam.
Abstract:
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function.
Abstract:
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function.
Abstract:
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function.
Abstract:
A smart antenna system is provided for communicating wireless signals between a mobile device and a plurality of different fixed base stations using one or more channels and one or more beams. The smart antenna system includes a control subsystem, a radio transceiver and an antenna subsystem coupled to each other and adapted to perform scanning of one or more combinations of base stations, channels and beams using one or more test links established with one or more of the fixed base stations where the test links use at least some of the channels and the beams. A first combination of base station, channel and beam is selected based on the scanning; and a first operating link is established for transmitting a wireless signal to the selected base station using the selected channel and beam.
Abstract:
Systems and methods of interference-triggered frequency hopping in a wireless communication system. A master is provided in the wireless communication system in wireless communication with slave nodes each configured to use different preselected communication frequencies to permit frequency hopping. A current channel is selected from among multiple channels in the wireless communication system in which the master and at least some of the slave nodes send and receive wireless communications. Each of the channels uses different ones of the preselected communication frequencies. In the current channel, interference with communications between the master and a selected one of the slave nodes that use the current channel is detected. A new channel is selected only in response to detecting the interference. The system switches from the current channel to the new channel such that communications between the master and the selected slave node use the new channel.
Abstract:
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function.
Abstract:
A smart antenna system is provided for communicating wireless signals between a mobile device and a plurality of different fixed base stations using one or more channels and one or more beams. The smart antenna system includes a control subsystem, a radio transceiver and an antenna subsystem coupled to each other and adapted to perform scanning of one or more combinations of base stations, channels and beams using one or more test links established with one or more of the fixed base stations where the test links use at least some of the channels and the beams. A first combination of base station, channel and beam is selected based on the scanning; and a first operating link is established for transmitting a wireless signal to the selected base station using the selected channel and beam.
Abstract:
A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function.