Patent application number | Description | Published |
20090034408 | APPARATUS AND METHOD OF RECONSTRUCTING AMPLITUDE-CLIPPED SIGNAL - A method and apparatus for compensating a distortion due to a clipped amplitude when an amplitude of a signal is clipped to reduce a peak to average power ratio (PAPR) in a wireless communication system using an orthogonal frequency division multiplexing (OFDM) scheme and a transmit diversity method using an orthogonal coding. | 02-05-2009 |
20090040960 | Space frequency block code signal processing system - A space frequency block code signal relaying system is provided. The space frequency block code signal relaying system includes a signal detecting unit which receives, via a radio channel, a source signal sent from a source station and detects the received signal; a relay signal generation unit which generates a relay signal corresponding with the source signal transmitted from the source station to a destination node based on the received signal, the source signal and the relay signal being signals encoded in a Space Frequency Block Code (SFBC) scheme; and a signal transmitting unit which transmits the relay signal to the destination node. | 02-12-2009 |
20090092182 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SPACE BLOCK CODING SIGNAL THROUGH ITERATIVE MULTI-USER DETECTION - 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. | 04-09-2009 |
20090103428 | SYSTEM FOR GENERATING SPACE FREQUENCY BLOCK CODE RELAY SIGNAL AND METHOD THEREOF - 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. | 04-23-2009 |
20090252254 | TRANSMITTER AND RECEIVER FOR FREQUENCY DOMAIN EQUALIZATION - A transmitter and/or receiver for performing frequency domain equalization is provided. A transmitter includes a pilot position determination unit for determining positions for inserting pilots in a frequency domain based on frequency spectrums of data, and a pilot insertion unit for inserting the pilots between the frequency spectrums of the data according to the determined positions for inserting the pilots. | 10-08-2009 |
20100074362 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method and apparatus for transmitting and/or receiving a signal in a multiple input multiple output (MIMO) system are provided. An apparatus for transmitting a signal in a multiple input multiple output (MIMO) system includes an input unit to receive N | 03-25-2010 |
20100261426 | COMMUNICATION DEVICE AND RELAY DEVICE - 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. | 10-14-2010 |
20100322140 | RELAY-BASED COMMUNICATION SYSTEM AND METHOD PROCESSING SIGNAL WITHOUT CYCLIC PREFIX - A relay-based communication system and method processing a signal without a cyclic prefix is provided. An apparatus for generating a relay signal includes a signal receiving unit which receives a source signal transmitted from a source node to a relay node and detects a received signal, a signal conversion unit which extracts samples corresponding to a first time duration from the received signal, sums the received signal and the extracted samples in a second time duration, and generates a converted received signal, a relay signal generation unit which generates a relay signal cooperating with the source signal based on the converted received signal according to a space frequency block code (SFBC) scheme, and a signal transmission unit which transmits the generated relay signal to a destination node. | 12-23-2010 |