摘要:
A transceiver used in a radio unit for wireless communication, comprises: a circuitry board including a transmitter and a receiver; a first connector on a first side of the circuitry board, wherein the first connector is configured to be connected to an interface card; a second connector on a second side of the circuitry board, wherein the second side is opposite the first side and the second connector is configured to be connected to a digital card via a flexible circuit; and a pair of transmit port and receive port located on the second side of the circuitry board, wherein the transmit port is coupled to the transmitter and the receive port coupled to the receiver, respectively. When the transceiver is part of a split-mount radio unit (SRU), the first connector is connected to the interface card and the second connector is not in use. When the transceiver is part of an all-outdoor radio unit (AOU), the second con vector is connected to the digital card and the first connector is not in use.
摘要:
A microwave transmit/receive enclosure comprises an enclosure housing and one or more I/O connection ports that are mounted on one side of the enclosure housing. The enclosure housing contains a removable communication connector and a removable memory card. Both the removable communication connector and the removable memory card can be inserted into or removed from the enclosure housing via the same I/O connection port.
摘要:
A method for performing digital predistortion to a microwave radio transceiver in response to an increase/decrease of transmit power level is disclosed. If the new transmit power level is higher than the current transmit power level, a set of digital predistortion (DPD) coefficients is applied to the transceiver before the issuance of a transmit power level increase command to the transceiver. Otherwise, a transmit power level decrease command is issued to the transceiver before the application of the set of DPD coefficients to the transceiver. Determining the set of DPD coefficients for the transceiver involves two stages: (i) calibrating the transceiver at a room temperature under predefined conditions and generating a DPD lookup table including DPD coefficients at a plurality of predefined temperatures other than the room temperature and (ii) determining the set of DPD coefficients for a given set of operating conditions using entries in the DPD lookup table.
摘要:
A transceiver used in a radio unit for wireless communication, comprises: a circuitry board including a transmitter and a receiver; a first connector on a first side of the circuitry board, wherein the first connector is configured to be connected to an interface card; a second connector on a second side of the circuitry board, wherein the second side is opposite the first side and the second connector is configured to be connected to a digital card via a flexible circuit; and a pair of transmit port and receive port located on the second side of the circuitry board, wherein the transmit port is coupled to the transmitter and the receive port coupled to the receiver, respectively. When the transceiver is part of a split-mount radio unit (SRU), the first connector is connected to the interface card and the second connector is not in use. When the transceiver is part of an all-outdoor radio unit (AOU), the second connector is connected to the digital card and the first connector is not in use.
摘要:
A method is provided for synchronizing a first radio unit with a second radio unit associated with an all outdoor radios system, the method including: receiving, at the first radio unit and the second radio unit, respectively, a communication signal from a common communication source; receiving, at the first radio unit and the second radio unit, respectively, a reference signal from a common reference source; synchronizing the communication signal at each of the first radio unit and the second radio unit with the reference signal such that the each of the first radio unit and the second radio unit generates an output signal having substantially the same frequency and substantially the same phase; and transmitting the output signal from each of the first radio unit and the second radio unit to a remote receiver through an antenna.
摘要:
An outdoor radio communication system housed in a single enclosure comprises a first transceiver, a second transceiver, a communication interface unit, an RF in-phase transmit combiner, an antenna coupling unit and a receive filter. The first transceiver includes a first receiver and a first transmitter. The second transceiver includes a second receiver and a second transmitter. The two transceivers are communicatively coupled with the communication interface unit. The RF in-phase transmit combiner, communicatively coupled to the first transmitter and the second transmitter, receives a phase-aligned RF signal from each transmitter, to create a third RF signal with enhanced signal gain. The two phase-aligned RF signals originate from the same source in the communication interface unit. The antenna coupling unit is communicatively coupled to the RF in-phase transmit combiner and the first receiver, and the receive filter is communicatively coupled to the second receiver.
摘要:
A microwave transmit/receive enclosure comprises an enclosure housing and one or more I/O connection ports that are mounted on one side of the enclosure housing. The enclosure housing contains a removable communication connector and a removable memory card. Both the removable communication connector and the removable memory card can be inserted into or removed from the enclosure housing via the same I/O connection port.