摘要:
A method and system for generating a space frequency block code relay signal includes a signal detection unit which detects a received signal by receiving a first and second source signals transmitted from a first and second source nodes, a relay signal generation unit which generates a relay signal cooperating with the first and second source signals using a space frequency block code (SFBC) scheme based on the received signal, and a signal transmitter which transmits the relay signal to a destination node.
摘要:
A method and system for generating a space frequency block code relay signal includes a signal detection unit which detects a received signal by receiving a first and second source signals transmitted from a first and second source nodes, a relay signal generation unit which generates a relay signal cooperating with the first and second source signals using a space frequency block code (SFBC) scheme based on the received signal, and a signal transmitter which transmits the relay signal to a destination node.
摘要:
A method and apparatus for transmitting and receiving a space block coding signal through Iterative Multi-user Detection is provided. The apparatus includes a multi-user interference cancellation unit which cancels multi-user interference in a received signal and outputs a first signal and a second signal that are sequentially transmitted from two transmitting antennas, a linear combiner which performs linear combination for the first signal and the second signal, and an equalizer which applies different equalization coefficients to the combined first signal and the second signal, respectively, to perform frequency-domain equalization.
摘要:
A method and apparatus for transmitting and receiving a space block coding signal through Iterative Multi-user Detection is provided. The apparatus includes a multi-user interference cancellation unit which cancels multi-user interference in a received signal and outputs a first signal and a second signal that are sequentially transmitted from two transmitting antennas, a linear combiner which performs linear combination for the first signal and the second signal, and an equalizer which applies different equalization coefficients to the combined first signal and the second signal, respectively, to perform frequency-domain equalization.
摘要:
A communication device that may select a relay node from a plurality of relay nodes, and be used as a signal receiving node through the selected relay node is provided. Additionally, a relay device that may be used as a relay node to receive and broadcast signals is provided.
摘要:
A mobile station which connects to a base station having a plurality of relays belonging thereto is provided. The mobile station includes a receiving unit which receives a first preamble signal from a first relay and receives a second preamble signal from a second relay, the first relay belonging to a first cluster including an N1 number of relays and the second relay belonging to a second cluster including an N2 number of relays, a control unit which selects the first cluster as an access cluster to connect to the base station, based on the first preamble signal and the second preamble signal, and a transmission unit which transmits an access request message to the first relay, wherein the access request message is transmitted to the base station via the first relay.
摘要:
A mobile station which connects to a base station having a plurality of relays belonging thereto is provided. The mobile station includes a receiving unit which receives a first preamble signal from a first relay and receives a second preamble signal from a second relay, the first relay belonging to a first cluster including an N1 number of relays and the second relay belonging to a second cluster including an N2 number of relays, a control unit which selects the first cluster as an access cluster to connect to the base station, based on the first preamble signal and the second preamble signal, and a transmission unit which transmits an access request message to the first relay, wherein the access request message is transmitted to the base station via the first relay.
摘要:
A relay and a terminal in a multi-pair two-way network and a communication method thereof is provided. A communication method of a relay of a network including K transmit-and-receive pairs including a plurality of terminals, with the relay including M antennas and each of the terminals including N antennas, including accessing a codebook including codewords, the codebook being configured to enable effective channels from the K transmit-and-receive pairs to the relay to be aligned in independent dimensions, respectively, when the K transmit-and-receive pairs transmit signals simultaneously, each of the effective channels being aligned based on one of the codewords, selecting one or more of the codewords indicating the effective channels from the K transmit-and-receive pairs to the relay, respectively, and transmitting information associated with the selected codewords to corresponding ones of the K transmit-and-receive pairs.
摘要:
Communication methods of a macro base station which collects position information about a mobile micro base station and that is served by the macro base station, predicts a channel between the macro base station and the micro base station, and performs a handover between the macro base station and the micro base station based on a state of the predicted channel is provided.
摘要:
A method and apparatus for controlling transmission power in a wireless network area is provided. A target base station may control transmission power in cooperation with a neighboring base station and, thus, a satisfaction with a Quality of Service (QoS) of target terminals may be improved. Additionally, the target base station may determine whether to control the transmission power in cooperation with the neighboring base station, based on a possible improvement in satisfaction with the QoS of the target terminals.