42 results about "Closed-Loop Communication" patented technology

Methods and systems for calculating pre-distortion coefficients in a closed-loop communication system are presented. Transmission terminals that include high power amplifiers are difficult to operate at or near the saturation point without transmitting signals with nonlinear distortions. By pre-distorting the signal prior to amplification the transmitted nonlinear distortions may be decreased. A closed-looped pre-distortion system may include a receiver that calculates the pre-distortion coefficients and transmits these coefficients back to the transmitter. These coefficients may be stored in a pre-distortion coefficient lookup table and may be updated by the receiver terminal.

Apparatus for the automatic packaging of one or more articles. One or more modular infeed systems are provided, each adapted to feed product to a wrapping machine, and each preferably adapted to communicate with a wrapping machine to identify its configuration to the wrapping machine. In a preferred embodiment, each modular infeed includes a film roll unwind assembly, an integrated film folding head, a product conveyance mechanism and a closed-loop communications network.

A mobile communication apparatus with multiple transmission and reception antennas and a mobile communication method therefor are provided. In the mobile communication apparatus including a base station and a mobile station, the base station with at least one transmission antenna restores long-term information, short-term information, a signal to interference and noise ratio (SINR) from a feedback signal received from the mobile station, spatially processes dedicated physical channel (DPCH) signals using basis information generated from the restored long-term information, short-term information and SINR and transmits the results of adding pilot channel (PICH) signals to the spatially processed results to the mobile station. The mobile station with at least one reception antenna determines a first characteristic corresponding to the channel downlink characteristic for each of the transmission and reception antennas, from the PICH signals transmitted from the base station, determines the long-term information, the short-term information, and downlink power control information including the SINR, which reflect the first characteristic, converts the determined long-term information, short-term information, and downlink power control information into the feedback signal, and transmits the feedback signal to the base station. The long-term information includes effective long-term eigenvectors and effective long-term eigenvalues, the short-term information includes effective short-term eigenvectors, and the downlink power control information indicates whether to increase or decrease downlink transmission power. Therefore, with the great advantage of closed communications systems the effects of interference, noise, and fading can be minimized, whereas throughput can be maximized.

A design-to-ship enabled shipping device in a commercial printing environment and method for managing workflow for use with the same. The present invention provides a method, program product and system for managing workflow in a commercial printing environment including a designer location and a print service provider location, where the method comprises establishing a closed-loop communication link between the designer location and the print service provider location, creating a press ready file at the designer location using updated device configuration information received from the print service provider location via the closed-loop communication link, submitting the press ready file to the print service provider location via the closed-loop communication link, and receiving a printed output of the press ready file and shipping the printed output using an automated shipping device.

An integrated workflow for commercial printing with a closed-loop communication link between designer and print service provider locations. The present invention provides a method, program product and system for managing workflow in a commercial printing environment including a designer location and a print service provider location, where the method comprises establishing a closed-loop communication link between the designer location and the print service provider location, creating a press ready file at the designer location using updated device configuration information received from the print service provider location via said closed-loop communication link, submitting the press ready file to the print service provider location via the closed-loop communication link, and performing at least one of automated printing, finishing, packaging and shipping using the press ready file.

The present invention describes a method of closed loop MIMO communication utilizing implicit or explicit channel state information (CSI) at the transmitter and the receiver. The transmitter performs linear pre-processing (for example, QR decomposition or bi-diagonal decomposition or Jacobi rotations, and / or sporadic SVDs) on a channel matrix, and the receiver mitigates the mutual interference between the streams by performing MMSE processing on the received signals. The MMSE matrix is computed with respect to the processed channel that may estimated by the receiver through preprocessed pilot signals. The transmitters preprocessing is of much lesser cost and complexity than full SVD.

A method of regulating power for multi-node computer system components has a closed-ring path that links all the power governors and circulating in the ring is a system power number that represents the power consumption of the entire system. Meanwhile, all the governors keep counting its local power consumption. Each time the number passes a governor, the governor will add its local count onto this number, store this number for future usage, and reset its local count. When the new number returns back to the same power governor, the governor will subtract the new number with its stored number to calculate the overall system power usage within a number circulation period. The system power number overflow problem is also detected with a counter if the incoming number is smaller then the number previously stored. The counter whose counting capacity is greater than the maximum system power usage on all the nodes within a number circulation period. A single number transfer mode and multiple number transfer mode and heterogeneous multi-node components which could have different power usage configurations are employed.

The invention belongs to the technical field of automatic detection of electric power equipment, and specifically relates to a system for testing a power quality monitoring device and a testing method thereof. The system includes a detection host, a standard source, and a power quality monitoring device. The detection host communicates with the power quality monitoring device through a GBIP bus The standard source is connected by communication, and the standard source is electrically connected with the power quality monitoring device through the test signal line. The power quality monitoring device forms a closed-loop communication control system with the detection host through Ethernet. The system and its testing method of the present invention can not only In addition to the accuracy test of power quality indicators, data model and communication protocol test, system self-test and fault identification and alarm functions including standard source overload judgment, power quality monitoring device wiring correctness, and closed-loop test environment integrity can also be realized. Further improve the intelligence, automation and work efficiency of the power quality monitoring device test.

A wireless communication apparatus in a closed loop communication wherein a channel resource can be shared among users and hence the capacity of the communication system can be increased. In this apparatus, calculating parts (6031 and 6032) calculate a first pre-code (α) and a second pre-code (β), respectively, from CSI fed back from a receiving wireless communication apparatus; an encoding part (6033) includes multipliers (α1, α2), which multiply the first pre-code (α) by a first data and a second data to generate a first encoded data and a third encoded data, respectively, and also includes multipliers (β1, β2) that multiply the second pre-code (β) by the first data and the second data to generate a second encoded data and a fourth encoded data, respectively; spreading parts (6034-1 and 6034-2) spread the first and second encoded data with a first spreading code (c) to generate a first spread data and a second spread data, respectively; spreading parts (6035-1 and 6035-2) spread the third and fourth encoded data with a second spreading code (p) to generate a third spread data and a fourth spread data, respectively; an adding part (6036) adds the first spread data and the third spread data together; and an adding part (6037) adds the second spread data and the fourth spread data together.