31results about How to "Troubleshoot reception issues" patented technology

The invention provides a method and equipment for transmitting information on an enhanced physical downlink control channel. The sending method includes: according to the first aggregation level to which the first candidate E-PDCCH belongs, obtaining the first eCCE or CCE resource mapped in the first PRB resource by the first candidate E-PDCCH; each candidate in the first aggregation level The eCCE or CCE resources mapped by E‑PDCCH in the first PRB resource are different from each other; the first PRB resource is composed of PRBs multiplexed with E‑PDCCH and PDSCH in each aggregation level in each subframe; determine the first candidate The first DMRS port corresponding to the reference signal corresponding to the E-PDCCH; respectively sending the reference signal and the data part corresponding to the first candidate E-PDCCH on the subcarrier corresponding to the first DMRS port and the first eCCE or CCE resource. The technical scheme of the invention solves the transmission problem of E-PDCCH.

The invention discloses a Ku-band high-sensitivity receiving circuit which comprises a radio frequency amplification circuit, an radio frequency filter circuit, a first mixing circuit, a first local oscillation circuit, a first intermediate frequency filter circuit, a first intermediate frequency amplification circuit, a second mixing circuit, a second local oscillation circuit, a second intermediate frequency switch filter circuit and a second intermediate frequency amplification circuit. The radio frequency amplification circuit is successively connected in series with the radio frequency filter circuit, the first mixing circuit, the first intermediate frequency filter circuit, the first intermediate frequency amplification circuit, the second mixing circuit, the second intermediate frequency switch filter circuit and the second intermediate frequency amplification circuit. The first mixing circuit is connected with first local oscillation circuit. The second mixing circuit is connected with the second mixing circuit. According to the invention, the structural size of the circuit is greatly reduced; the power consumption of the circuit is reduced; the weight of the circuit is reduced; and the circuit has the advantages of stable performance and high index consistency, and is widely applicable to a communication system, a navigation system, a radar and the microwave communication system of a space electronic technology.

The method includes steps: network side transfers each broadcast / multicast traffic (BMT) data after processed by medium access control layer to physical layer; based on multiplexing control information, physical layer executes multiplexing process for each BMT data. The invention also discloses method for demultiplexing BMT data. The demultiplexing method includes steps: after demodulation at physical layer, UE obtains multiplexing control information (MCI) in use for multiplexing processing BMT data down sent from network side; based on MCI, physical layer only carries out demultiplexing anddemodulating processes for relevant BMT data in broadcast / multicast multiplexing traffic data down sent from network side. The invention reduces power consumption needed by UE to demodulate multiplexing data, and guarantees that all UE with different transmission bandwidth can receive needed BMT, and gets better balance between performance of BMT and use ratio of wireless resources.

The invention discloses a photonic lantern type degenerate module multiplexing / demultiplexing device and a transmission method. The multiplexing / demultiplexing device structure of the present invention includes a plurality of fiber cores, wherein the thickness of the fiber cores transmitting different LP modes is different, and the degenerate modes in the same mode group adopt the same fiber core; the cross-section of the fiber core arrangement is axisymmetric, and the excited The core of the circular symmetric mode is on the symmetry axis, and the cores of the non-circular symmetric mode are symmetrically arranged on both sides of the axis; the cores are arranged in concentric rings to excite the LP pq The fiber core of the mode is located on the qth ring from the outside to the inside, and the fiber cores on both sides of each ring start from the fiber core on the axis of symmetry and are arranged in a progressively thinner manner; after the arrangement, one end of the fiber core is melted The tapering forms the tapered coupling region of the mux / demux. The invention solves the problem of degenerate mode group reception and has the advantages of wide working bandwidth and low crosstalk.

The invention discloses a watch with a metal watch case. Both the watch ring and the watch case are made of metal, and the metal watch ring is used as an antenna radiator; the movement includes a circuit board, and the circuit board is horizontally fixed in the watch case body The watch also includes a non-metallic bracket for supporting the bezel and separating the bezel from the watch case, the non-metallic bracket is a ring bracket; the watch also includes a first metal conductor, a second metal conductor and a third metal conductor , the bezel and the antenna signal line of the circuit board are connected through the potential of the first metal conductor; the bezel and the case are shorted through the potential of the second metal conductor; the signal ground of the watch case and the circuit board are shorted through the potential of the third metal conductor . The invention uses the bezel as the antenna, which can effectively solve the antenna receiving problem of the metal watch, greatly reduce the influence of the metal watch case on the performance of the antenna, and also greatly reduce the space occupied by the antenna inside the watch, and also has the advantages of simple structure and easy installation. The characteristics of demolition, stable structure and long service life.

The invention discloses a high-speed latch capable of receiving millivolt signals. The latch comprises a reference current source used for providing a reference current for the latch; a sampling amplification circuit for carrying out sampling amplification on input signals; a latch circuit for carrying out latch on sampling point data of the sampling amplification circuit; and a current amplification circuit for carrying out amplification on charging and discharging current of the sampling circuit when the latch is switched from a latch state to a sampling state. The sampling amplification circuit is connected with the current amplification circuit; and the current amplification circuit is connected with the latch circuit. The current amplification circuit comprises an emitter follower, wherein current gain of the emitter follower is beta; and when the latch is switched from the latch state to the sampling state, the charging and discharging current of the sampling circuit has enough current to charge / discharge an output node after being amplified for beta times by the current amplification circuit. The high-speed latch solves the problem of reception of the millivolt high-speed signals of the latch, reduces a comparator structure of a conventional EOM circuit, reduces power consumption and simplifies circuit structure.

The invention discloses a resonant cavity used for accumulating and receiving sine wave signals and its working method. The coaxial inner core is arranged in the inner cavity of a cylindrical metal shell and connected to the center of the end face of one end of the cylindrical metal shell. The inner core of the cylindrical metal shell At least two L-shaped feeding parts are symmetrically arranged in the cavity with respect to the coaxial inner core, one end of the L-shaped feeding part is connected to the end of the coaxial inner core, and the other end of the L-shaped feeding part runs through the cylindrical metal shell and connects with the The end face of the coaxial inner core connection; the outside of the cylindrical metal shell is provided with a dipole antenna at the feed through hole, one arm of the dipole antenna is connected to the end of the L-shaped feed part, and the other end of the dipole antenna One arm is connected to the metal short-circuit end; the output probe is coaxially installed in the output signal through hole on the cylindrical metal shell, and one end of the output probe is vertically installed with a disc structure, and the other end is connected to a switching device. The invention can solve the problem of receiving weak radar signals from the time domain.