447results about How to "Improve signal transmission quality" patented technology

A gain adjustment apparatus, a gain adjustment method, and a tangible machine-readable medium thereof for a multiple input multiple output (MIMO) wireless communication system are provided. The MIMO wireless communication system comprises source antennas, destination antennas, relay stations (RSs) and a relay transmission power limit value. The gain adjustment method comprises the following steps: adjusting the gain of one single RS according to a gain calculation; multiplying the gains of other relay stations by a scaling value for adjustment. According to aforesaid method, the present invention can increase the system capacity of the MIMO wireless communication system.

A mating connector includes a plastic body, a first terminal group and a second terminal group received in the plastic body, a retaining elastic sheet retained at the plastic body and located at a side of the first terminal group and the second terminal group, a middle shielding sheet located between the first terminal group and the second terminal group, and a shielding case contacting the middle shielding sheet. An urging portion is extended from the middle shielding sheet and abuts the retaining elastic sheet. The middle shielding sheet shields an interference signal between plate surfaces of the first and second terminal groups. The retaining elastic sheet shields an interference signal between side surfaces of the first and second terminal groups.

A multi-chip package comprising a carrier, at least a package module, an insulation layer and a patterned metallic layer is provided. The package module is mounted onto one of the surfaces of the carrier. The package module has a plurality of stacked chips electrically connected to each other using a flip chip bonding technique. The insulation layer is formed over the surface of the carrier and encloses the package module. The insulation layer has a plurality of via holes linked to the surface of the carrier and the package module. Depth of the via holes in a direction perpendicular to the surface of the carrier is greater than height of the package module in the same direction. The patterned metallic layer is formed over the insulation layer and fills the via holes, serving as interconnecting lines inside the multi-chip package.

A stacked package includes a substrate, a first die, at least one signal transmission plate, at least one second die, a plurality of conductive wires, and a molding compound. The first die is electrically connected with the substrate using flip-chip bonding. The signal transmission plate is provided on the first die and includes an insulating layer, a layout wire layer, and a solder mask layer. The layout wire layer is formed on the insulating layer, and the solder mask layer is formed on the layout wire layer. The solder mask exposes partial area of the layout wire layer at the center and peripheries of the signal transmission plate to form a plurality of die bonding pads and a plurality of wire bonding pads. The second die is electrically connected with the die bonding pads using flip-chip bonding, and the wire bonding pads are electrically connected with the substrate via the conductive wires so that the signals from the second die are transmitted to the substrate. In addition, the molding compound is used to encapsulate the first die, the signal transmission plate, the second die, and the conductive wires.

The invention provides a method for realizing partner selection and cooperative transmission combining with position information. The method is to obtain the position information of each node by directly using a cooperative positioning technology of a cooperative communication system and provide a partner selection strategy according to the large-scale fading condition of information transmission: an information source firstly calculates a distance between the information source and each candidate trunk node; the information source adds the distance between the information source and each trunk node and the distance between each trunk node and a base station by combining the obtained position information of each candidate trunk node and the distance information between the candidate trunk node and the base station; the information source selects a trunk node with the minimum total distance value of a trunk information channel as a cooperative partner of the information source to help the information source transmit information, after the total distance value of the trunk information channel of each trunk node is known, thereby realizing gain of space diversity reception, reducing path loss, and achieving the aims of reducing the bit error probability during transmitting, improving the signal quality and expanding the network coverage.

A multi-chip package comprising a carrier, at least a package module, an insulation layer and a patterned metallic layer is provided. The package module is mounted onto one of the surfaces of the carrier. The package module has a plurality of stacked chips electrically connected to each other using a flip chip bonding technique. The insulation layer is formed over the surface of the carrier and encloses the package module. The insulation layer has a plurality of via holes linked to the surface of the carrier and the package module. Depth of the via holes in a direction perpendicular to the surface of the carrier is greater than height of the package module in the same direction. The patterned metallic layer is formed over the insulation layer and fills the via holes, serving as interconnecting lines inside the multi-chip package.

An electrical connector includes an insulative housing, a number of contacts retained in the insulative housing, a metallic outer shell enclosing the insulative housing, and a metallic inner shell positioned between the metallic outer shell and the insulative housing. The insulative housing includes a base and a tongue portion protruding from the base. The contacts include a number of flat contacting portions exposed on a top surface and a bottom surface of the tongue portion, respectively. The tongue portion is located at a center of the metallic outer shell along a vertical direction. The metallic inner shell and the metallic outer shell are in mechanical contact with each other in order to achieve a relative larger grounding area.

An assembly package includes a substrate, a first die, at least one signal transmission plate, at least one second die, a plurality of conductive wires, and a molding compound. The first die is electrically connected with the substrate using flip-chip bonding. The signal transmission plate is provided on the first die and includes an insulating layer, a layout wire layer, and a solder mask layer. The layout wire layer is formed on the insulating layer, and the solder mask layer is formed on the layout wire layer. The solder mask exposes partial area of the layout wire layer at the center and peripheries of the signal transmission plate to form a plurality of die bonding pads and a plurality of wire bonding pads. The second die is electrically connected with the die bonding pads using flip-chip bonding, and the wire bonding pads are electrically connected with the substrate via the conductive wires so that the signals from the second die are transmitted to the substrate. In addition, the molding compound is used to encapsulate the first die, the signal transmission plate, the second die, and the conductive wires.

The invention discloses a method for rejecting interference between cells, which includes: A. determining frequency bandwidth according to service type of user equipment UE when it is determined that allocating downlink resource for UE is needed; B. selecting frequency band which is not occupied by adjacent cells from available downlink resources of the cell where the UE is located based on determined frequency bandwidth, and allocating the same to the UE. The invention also discloses a base station, including interference rejection unit, receiving available downlink resources of the cell where the UE is located from external, determining frequency bandwidth according to service type of user equipment UE when it is determined downlink resource needs to be allocated for UE, and selecting frequency band which is not occupied by adjacent cells from available downlink resource, allocating the same to the UE. Moreover, the invention also provides a system for rejecting interference between cells, which includes wireless network controller and base station. The inventive scheme can realize rejection of interference between cells by simple operation.

A grounding electrical connector includes: an inner sleeve, a front end of the inner sleeve having an outer flange, an annular groove being formed on an inner circumference of the outer flange; an outer sleeve coaxially positioned around the inner sleeve; a nut formed with an inner threaded section for locking with a threaded interface connector of an electronic device, the nut further having a receptacle for receiving the outer flange of the inner sleeve therein; and a conductive grounding spring mounted in the annular groove of the inner sleeve and having multiple inner resilient concave sections. When the threaded section of the nut is screwed onto the threaded interface connector of the electronic device, the inner resilient concave sections of the conductive grounding spring are mechanically and electrically connected with a circumference of the threaded interface connector.

A DC power plane structure applied in multi-layer circuit board is provided. The DC power plane structure includes a first circuit area for receiving a DC power, a noise filter with one end electrically connected to a DC power output end of the first circuit area, and a second circuit area which is electrically isolated from the first circuit area. The second circuit area has a band gap structure, and the DC power input end of the band gap structure is electrically connected to the other end of the noise filter for inhibiting high-frequency noise generated between layers of the multi-layer circuit board.

An interface circuit includes: a first transmitting section transmitting a first signal as an in-phase signal to an external device through a transmission path; and a second transmitting section transmitting a clock signal, which is synchronized with the first signal to be transmitted by the first transmitting section, as a differential signal to the external device through the transmission path.

An electrical connector includes a middle shielding plate, a lower terminal module, an upper terminal module mounted on a top surface of the middle shielding plate, an insulation module and a shielding shell. The middle shielding plate is mounted on the lower terminal module. The lower terminal module includes a plurality of lower terminals which include two lower ground terminals. A front end of an outer side of each of the lower ground terminals is connected with a lower connecting piece. The upper terminal module includes a plurality of upper terminals which include two upper ground terminals. A front end of an outer side of each of the upper ground terminals is connected with an upper connecting piece. The shielding shell is mounted outside the lower terminal module, the upper terminal module and the insulation module.

A cable connector (100) includes an insulated housing (2) defining a receiving space (20), a plurality of terminals (3) being arranged into an upper and a lower terminal rows and received in the insulated housing (2), a metal plate (5) disposed between the upper terminal row and the lower terminal row, and a cable (7) including a number of wires electrically connecting to the terminals (3) and the metal plate (5).

The invention discloses an electric connector, comprising an insulating body and a conductive terminal arranged on the insulating body. The conductive terminals comprise a plurality of grounded terminals and a plurality of pairs of differential signal terminals, wherein each grounded terminal is provided with a first welding part extending out of the insulating body, each differential signal terminal is provided with a second welding part extending out of the insulating body, and the first, second and third welding parts are arranged into one row, and the first welding part of two grounded terminals is arranged between the second welding parts adjacent to the two pairs of differential signal terminals, thereby the shielding effect between the two adjacent pairs of differential signal terminals is increased, the crosstalk between the differential signal terminals is reduced, and the signal transmission quality of the electric connector is improved.

A stretchable device for transmitting signal between end points, such as a sensor and electronic unit, includes a conductive element, which is coupled with a supporting structure by introducing the conductive element successively through the thickness of the supporting structure to the first and second side of the supporting structure, thereby providing a corrugated structure for the conductive element, which is configured to be straighten out at least partially during stretching the device in its longitudinal direction. The conductive element is coupled with the supporting structure between first and second outer layers thereby providing the stretchable device.

A mating connector includes a plastic body, a first terminal group and a second terminal group received in the plastic body, a retaining elastic sheet retained at the plastic body and located at a side of the first terminal group and the second terminal group, a middle shielding sheet located between the first terminal group and the second terminal group, and a shielding case contacting the middle shielding sheet. An urging portion is extended from the middle shielding sheet and abuts the retaining elastic sheet. The middle shielding sheet shields an interference signal between plate surfaces of the first and second terminal groups. The retaining elastic sheet shields an interference signal between side surfaces of the first and second terminal groups.

A wireless communication system includes a Central Station (CS) capable of the functions of a Base Station Controller (BSC), and at least one access device controlled by the CS. The CS is connected to the at least one access devices through cables. The access device is adapted to demodulate the downlink wired signals of the CS to downlink Radio Frequency (RF) signals, and send the downlink RF signals to the destination wireless user. The CS is adapted to perform baseband processing, Intermediate Frequency (IF) processing, and RF processing for the data provided by the core network to obtain downlink RF signals, modulate the downlink RF signals to downlink wired signals, and send the downlink wired signals to the access device corresponding to the destination wireless user of the data provided by the core network. A CS, a BS, and two communication methods are disclosed herein.

The invention discloses a method and equipment for optical power debugging, which belong to the field of optical networks. The method comprises the steps of: acquiring a debugging value of an attenuator of a transmitting-end optical amplifier of a wavelength division link, and setting the attenuator of the transmitting-end optical amplifier according to the debugging value; and acquiring a debugging value of an attenuator of a downstream optical amplifier according to a current value of the input total optical power and a target value of the input total optical power of the downstream optical amplifier of the wavelength division link and a current attenuation value of the attenuator of the downstream optical amplifier, and setting the attenuator of the downstream optical amplifier according to the debugging value of the attenuator of the downstream optical amplifier. The equipment comprises a first acquisition module, a first setting module, a second acquisition module and a second setting module. By adopting integral debugging to the optical power in a wavelength division network, the method and the equipment do not need to disconnect optical fibers in the debugging process, realize the automation of the debugging, reduce error rate, and shorten debugging time.

The invention discloses electronic equipment, an MHL (mobile high-definition link) connector, an MHL system and a connector detection method, and belongs to the electronic technical field. The electronic equipment further comprises a first switch controlled by an MHL chip and a second switch controlled by a processor; one end of the first switch is electrically connected with the processor, and the other end of the first switch is electrically connected with a detecting terminal ID (identity) in a USB (universal serial bus) interface; and one end of the second switch is electrically connected with the processor, and the other end of the second switch is electrically connected with the detecting terminal ID in the USB interface. Recognition signals are acquired from the detecting terminal ID according to the first switch and / or the second switch of the electronic equipment, and the MHL method is selected according to the acquired recognition signals to be allowed or forbidden to output audio / video signals, so that the problem that the outputted audio / video signals in poor quality caused by casually using the MHL connector by the electronic equipment is solved, and the audio / video signals are outputted to guarantee signal output quality under the condition that the preset MHL connector is detected.

The invention discloses a community rubbish can intelligent management system which comprises a rubbish recycling vehicle and a rubbish can. The community rubbish can intelligent management system is characterized by further comprising a high-power wireless router station and an upper computer system. The rubbish recycling vehicle, the rubbish can and the upper computer system are in data communication by the high-power wireless router station through a ZIGBEE network. The community rubbish can intelligent management system has the functions such as overflow communication, rubbish identification, automatic cleaning and automatic recycling. Rubbish recycling methods achieved through the community rubbish can intelligent management system include the rubbish recycling method when rubbish inside the rubbish can is not overflowed and the rubbish recycling method when the rubbish inside the rubbish can is overflowed, the working mode of the rubbish recycling vehicle is determined by judging whether the rubbish can sends a rubbish overflowing signal or not, the intelligent degree is high, and the high working efficiency of the rubbish recycling vehicle is kept.

A liquid crystal display having a repair circuit structure and an array substrate of the liquid crystal display are provided. Each of the repair lines of the repair circuit comprises a front repair line portion arranged to cross with a front data line portion in a substantially perpendicular manner, an end repair line portion arranged to cross with an end data line portion in a substantially perpendicular manner, and an intermediate repair line portion connecting the front and end repair line portions. At least two repair lines in the end repair line portion are positioned in different layers so that a parasitic capacitance between respective repair lines in the repair circuit structure can be reduced and signal transmission quality can be ensured.

A signal transmission structure including a signal line, a first reference plane with a first opening, and a second reference plane with a second opening is provided. The first reference plane is disposed beside the signal line, and a portion of the signal line passes through a position of the first opening. In addition, the second reference plane is disposed beside the first reference plane, and the second opening is in a position corresponding to the position of the first opening, while the outline of the second opening projected onto the first reference plane does not overlap with the position of the first opening. Therefore, at high frequency-transmission, the above structure can reduce the insertion loss resulted from impedance mismatch as the signal passes through the opening, and reduce the resonance induced by the coupling between two reference planes to enhance the quality of signal transmission.

A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.

A method for relaying performed by a relay station is provided. The method includes receiving a signal from a source station through at least one receive antenna, defining a connection structure between the at least one receive antenna and at least one transmit antenna, processing the signal by using a midcoding matrix, and transmitting the processed signal to a destination station through the at least one transmit antenna. Quality of signal transmission can be enhanced.

The invention relates to the field of electrical connectors and particularly relates to a difference contact module and a difference connector and a connector assembly using the module. The difference contact module comprises an insulating base body, a differential pair and a grounding contact, wherein the differential pair and the grounding contact are assembled inside the insulating base body, a shielding plate is arranged above and / or below the differential pair and the grounding contact on the insulating base body, and at least one of the grounding contact and the shielding plate is provided with a protruding structure which protrudes towards the other one of the grounding contact and the shielding plate. During usage, a gap between two adjacent differential pairs, in which the crosstalk occurs, is greatly reduced, so that the crosstalk between two adjacent differential pairs of the difference connector can be reduced, and the signal transmission quality of the difference connector can be improved; besides, the shielding plate is arranged, so that two adjacent layers of difference contact modules of the difference connector are isolated, and the problem of the crosstalk between two adjacent layers of contact modules can be solved.

A choke signal-adjusting device, and more particularly, a signal-adjusting device capable of increasing the high-frequency signal transmission quality, comprises a circuit board disposed in a connector, a plurality of transmission circuits being disposed on the circuit board, one side of the transmission circuit being taken as a signal input terminal, and another thereof being taken as an input terminal; it is characterized in that: a plurality of chokes are correspondingly disposed in series in the middle of the plurality of transmission circuits; whereby, the balance transmission signals of unequal time duration to signals of equal time duration so as to increase the signal transmission quality effectively.