Patent application number | Description | Published |
20100232348 | Method and Apparatus for Sending, Forwarding, and Processing Data - A method for sending data includes obtaining data packets to be sent and modulating, by each transmit diversity branch, the data packets by using modulation mode corresponding to the each transmit diversity branch, and sending the modulated data packets. The modulation modes form a preset optimized combination of modulation modes. A different modulation mode corresponds to a different group of modulation factors and/or different group of constellation modulation symbols. The different groups of modulation factors comply with a preset modulation factor mapping relationship. The different groups of constellation modulation symbols comply with a preset constellation modulation symbol mapping relationship. | 09-16-2010 |
20100331007 | METHOD AND APPARATUS FOR SUPPRESSING INTER-CELL INTERFERENCE - The present invention discloses a method and an apparatus for suppressing inter-cell interference. The method includes: obtaining edge channels whose signal interference ratio (SIR) is above a preset threshold from edge channel group to constitute a first candidate channel set; selecting an edge channel of the lowest correlation as a tier-1 channel; obtaining central channels whose SIR are above a preset threshold from central channel group to constitute a second candidate channel set; selecting a central channel of the lowest correlation as a tier-2 channel; and comparing SIRs of the tier-1 channel and the tier-2 channel and assigning the channel of a higher SIR to an edge terminal in the local cell. The present invention may suppress inter-cell interference and reduce the waste of channel resources. | 12-30-2010 |
20120114063 | METHOD, APPARATUS AND SYSTEM FOR ELIMINATING ALIASING NOISE IN MULTI-CARRIER MODULATION SYSTEM - A method, an apparatus and a system for eliminating aliasing noise in a multi-carrier modulation system are disclosed. The method includes: acquiring a first power spectrum density template; acquiring information of in-band subcarriers whose aliasing noise is greater than background noise, and acquiring a difference between the aliasing noise and the background noise of the in-band subcarriers; adjusting the first power spectrum density template according to the information of the in-band subcarriers and the corresponding difference to obtain a second power spectrum density template; and sending signals according to the second power spectrum density template. The method, the apparatus, and the system disclosed herein eliminate the aliasing crosstalk noise, improve the performance and stability of in-band services without involving upgrade or modification of the Customer Premises Equipment (CPE), and are easy to implement. | 05-10-2012 |
20120327846 | NETWORK CODING-BASED DATA PROCESSING METHOD AND SYSTEM - The present disclosure provides a network coding-based data processing method and system. The method includes: receiving modulated data packets, the modulated data packets including: a first data packet modulated by using a first constellation map, a second data packet modulated by using a second constellation map, and a third data packet modulated by using a third constellation map; where the first constellation map, the second constellation map, and the third constellation map are capable of minimizing the bit error rate of received signals, and a bit stream transmitted in the third data packet is an Exclusive-OR result of a bit stream transmitted in the first data packet and a bit stream transmitted in the second data packet, that is, c=a⊕b; and obtaining original transmitted data from the received data packets. | 12-27-2012 |
20130102305 | WIRELESS ACCESS METHOD, DEVICE, AND SYSTEM - Embodiments of the present invention disclose a wireless access method, device, and system. The method includes: sending pilot signal strength or channel characteristics to a central processing node, where the pilot signal strength or channel characteristics are fed back by a user terminal within the coverage area of a wireless access node and are between the wireless access node and the corresponding user terminal; receiving access indication information of the user terminal, which is fed back by the central processing node and is determined according to the pilot signal strength or channel characteristics, where the access indication information of the user terminal includes an identifier of the wireless access node connected with the user terminal and a corresponding coding and modulation scheme; and sending the identifier of the wireless access node connected with the user terminal and the corresponding coding and modulation scheme to the corresponding user terminal. | 04-25-2013 |
20130198523 | METHOD AND APPARATUS FOR CHECKING FIELD REPLACEABLE UNIT, AND COMMUNICATION DEVICE - The present application provides a method and an apparatus for checking a field replaceable unit, and a communication device. The method for checking the field replaceable unit includes: obtaining key identifier information saved in a security memory module; and determining trustworthiness of the field replaceable unit according to the key identifier information saved in the security memory module and key identifier information directly obtained from the field replaceable unit. The present application may implement trustworthiness checking of the field replaceable unit, the implementation is simple, and the cost is low. | 08-01-2013 |
20150249488 | ARRAY ANTENNA, METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING SIGNAL - The present application discloses an array antenna, a method and a device for transmitting and receiving a signal. The array antenna includes at least two active antennas, wherein each active antenna is surrounded by at least two different parasitic antennas, respective parasitic antennas are respectively coupled to controllable loads, and the controllable loads are respectively coupled to a control circuit. With the arrangement of at least two active antennas, when a channel is in a good state, channel capacity can be adjusted by adjusting the controllable loads coupled to the parasitic antennas; and when the channel is not in the good state, the bit error ratio can be reduced by both adjusting the controllable loads coupled to the parasitic antennas and adjusting transmitting directional diagrams of the active antennas according to an adjustment vector, meanwhile, miniaturization can also be realized. | 09-03-2015 |
20150288076 | SINGLE RADIO FREQUENCY DOUBLE-STREAM TRANSMISSION APPARATUS, USE METHOD AND ANTENNA SYSTEM - Embodiments of the present disclosure provide a single radio frequency double-stream transmission apparatus, wherein the apparatus includes: a radio frequency link, a reactance control circuit, a parasitic reactor, an active antenna and an even number M of parasitic antennas, wherein M is larger than 2; the radio frequency link is configured to generate a radio frequency signal; the active antenna is connected with the radio frequency link, the parasitic antennas are respectively connected with the parasitic reactor, the distances from the parasitic antennas to the active antenna are the same, and the radian between adjacent parasitic antennas is | 10-08-2015 |