摘要:
Provided is an apparatus and method for controlling power in a cognitive radio wireless communication system, the method comprising: performing channel scheduling and the first power control for at least one terminal; checking whether the at least one terminal exist within constraint area, and determining whether the at least one terminal within constraint area cause interference to incumbent system; and performing the secondary power control so that an allocating power may be less than the maximum tolerable interference.
摘要:
A method is provided for controlling power in a communication system. The power control method includes allocating a first data transmission region and a second data transmission region corresponding to a first communication scheme and second communication scheme; providing a communication service to a receiver through the first data transmission region, and receiving power control information from the receiver through the second data transmission region while providing the communication service; and adjusting a level of transmission power used for providing the communication service according to the received power control information, and providing the communication service to the receiver using the adjusted transmission power.
摘要:
Provided is a power control apparatus and method of a time division duplex (TDD) communication system. The power control apparatus includes an uplink power determiner for determining an uplink power value using a power control computation element of a current frame, which is acquired using a power control computation element of a prior frame and a power increase/decrease change estimated from a downlink, and a cell interference received from a base transceiver station (BTS); and an uplink power controller for controlling an uplink power by sending the uplink power value from the uplink power determiner to a transmitter.
摘要:
A method is provided for controlling power in a communication system. The power control method includes allocating a first data transmission region and a second data transmission region corresponding to a first communication scheme and second communication scheme; providing a communication service to a receiver through the first data transmission region, and receiving power control information from the receiver through the second data transmission region while providing the communication service; and adjusting a level of transmission power used for providing the communication service according to the received power control information, and providing the communication service to the receiver using the adjusted transmission power.
摘要:
A regulator for a clutch includes a regulator housing, first and second plates in the regulator housing, and a support plate attached to the regulator housing. The first plate may be convex in a direction opposite the second plate. The first plate may include at least one oil passage hole. The first plate may be thinner than the second plate. A first damping member may be provided between the regulator housing and the first plate, and a second damping member may be provided between the second plate and the support plate.
摘要:
A method and apparatus for estimating a geo-location of a terminal in a wireless communication system are provided. In a method of operating a terminal for providing geo-location information in a cognitive ratio (CR) system, the method includes obtaining first ranging information and transmitting a first ranging code to a base station (BS) in a network entry process; receiving an allocated second ranging resource from the BS; and transmitting a second ranging code.
摘要:
A channel interleaving method and apparatus in a communication system using a low density parity check (LDPC) code. Upon receipt of information data bits, an encoder encodes the information data bits into an LDPC codeword using a predetermined coding scheme. A channel interleaver interleaves the LDPC codeword according to a predetermined channel interleaving rule. A modulator modulates the channel-interleaved LDPC codeword into a modulation symbol using a predetermined modulation scheme.
摘要:
A method and apparatus for estimating a geo-location of a terminal in a wireless communication system are provided. In a method of operating a terminal for providing geo-location information in a cognitive ratio (CR) system, the method includes obtaining first ranging information and transmitting a first ranging code to a base station (BS) in a network entry process; receiving an allocated second ranging resource from the BS; and transmitting a second ranging code.
摘要:
Provided is an apparatus and method for controlling power in a cognitive radio wireless communication system, the method comprising: performing channel scheduling and the first power control for at least one terminal; checking whether the at least one terminal exist within constraint area, and determining whether the at least one terminal within constraint area cause interference to incumbent system; and performing the secondary power control so that an allocating power may be less than the maximum tolerable interference.
摘要:
An apparatus and method for reducing transmission overhead in a broadband wireless communication system are provided. In a transmitter in a broadband wireless communication system where total time resources are divided according to lengths of transmission data and the transmission data are allocated to the divided time resources, a header generator generates a header including data allocation information and control information for a frame to be transmitted, and a traffic channel constructer constructs a traffic channel by combining the header with a burst.