Abstract: A method and apparatus of improving capacity of channel is disclosed. A vector X(t) is generated based on a cycle period 1/T of a wide-sense cyclo-stationary (WSCS) noise and a whitening filter W(t) for decorrelating the WSCS noise in frequency domain. A scalar signal X(t) is generated by shifting the vector X(t) in the frequency domain.

Abstract: The present invention relates to a method of detecting the presence of a transmission signal of a transmitter in a reception signal in a wireless communication system based on CR technology.

Abstract: Provided are an apparatus, a method and a system for providing content in a media server, and, more particularly, an apparatus, a method and a system for providing content in a media server, in which content in the media server can be expressed as RSS data which can allow users to access the content through an RSS reader. The apparatus includes an RSS-converting unit which converts content information collected through a browse action or a search action into RSS data, and a web service unit which provides RSS data generated by the RSS-converting unit to external devices.

Abstract: A method and a device for switching a media renderer to another media renderer while a client performs streaming playback of content of a server are provided. Accordingly, a first client that performs streaming playback of the content transmits playback environment information and a URL of the content to the second client, and the second client transmits the received information and information about features of the second client to the server and requests the corresponding content which has the optimized format for the second client from the server. Therefore, a user can continue to watch the media content through a new media renderer in existing playback environment setting without additional manipulation.

Abstract: A communication method for implementing a real-time streaming using hypertext transfer protocol (HTTP) in a network is provided. Chunked encoding of HTTP is applied so that information can be exchanged between a server and a client while an HTTP request is being progressed. Therefore, bidirectional communication between the client and the server using HTTP is possible without modifying an existing HTTP protocol, and real-time transmission can be implemented.

Abstract: A method of sharing spectrum with a legacy communication system includes acquiring spectrum correlation of the legacy communication system, and generating a transmit waveform based on the spectrum correlation. Unlike conventional cognitive radios that utilize spectrum holes only, the proposed method can also utilize spectrally correlated frequency components where primary-user signals are present.

Abstract: A communication method for implementing a real-time streaming using hypertext transfer protocol (HTTP) in a network is provided. Chunked encoding of HTTP is applied so that information can be exchanged between a server and a client while an HTTP request is being progressed. Therefore, bidirectional communication between the client and the server using HTTP is possible without modifying an existing HTTP protocol, and real-time transmission can be implemented.

Abstract: The present invention relates to a method of detecting the presence of a transmission signal of a transmitter in a reception signal in a wireless communication system based on CR technology.

Abstract: A semiconductor device including a recessed channel transistor, and a method of manufacturing the same, provide: a substrate in which an isolation trench is provided; an isolation layer provided in the isolation trench so as to define a pair of source/drain regions in the substrate; a gate pattern provided in the isolation trench between the pair of source/drain regions, the gate pattern having a top surface at a same level as a top surface of the isolation layer and having a bottom surface at a lower depth than the pair of source/drain regions with respect to a top surface of the substrate; and a gate insulating layer provided between the substrate and the gate pattern at a bottom surface of the isolation trench.

Abstract: Provided is gossip-based peer-to-peer service apparatus and a method for quickly establishing a partnership. A first node that desires to join a service receives partial view information of a second node from the second view that is participating in the service. In response to receiving the partial view information from the second node, the first node extracts one or more candidate nodes to establish a partnership with, and engages the candidate nodes in a temporal partnership.

Abstract: A method for signal transmission of a relay, includes estimating a first modulation/demodulation channel between a transmitter and the relay and a second modulation/demodulation channel between the relay and a receiver, and an interference channel of the relay, receiving a radio frequency signal from a transmitter, generating a transformation vector using the channel estimate in order to reduce self-interference of the relay under a predetermined level, converting the radio frequency signal using the transformation vector, and transmitting the converted radio frequency signal to the receiver.

Abstract: A method and apparatus are provided for transmitting and receiving a stream of content in a distributed storage system. According to the method, a stream of a copy of content is received from a plurality of storages being distributed in a network, wherein an original of the content is stored in a server and archival fragments of the copy of the content are separately stored in the storages, and a stream of the original content is selectively received according to the quality of the copy of the content, wherein the quality is determined based on the number of archival fragments received from the storages. Accordingly, it is possible to prevent degradation in the quality and reliability of content when archival fragments of a copy of the content are received from a distributed storage, thereby stably receiving a high-quality content streaming service.

Abstract: A RF relay of a full-duplex generates a conversion matrix to belong to a null space of a channel matrix of an interference channel, generates a transmitting signal by converting a received signal using the conversion matrix, and then outputs the transmitting signal to a transmitting antenna. Therefore, an interference signal of an electromagnetic wave level (EM level) that can be generated while the transmitting signal passes through the interference channel can be canceled.

Abstract: A P2P network system for reducing streaming delay in a peer-to-peer (P2P) network is provided. The P2P network system may include at least one peer, a seed server, and a tracker server that manages the network. The seed server provides content to the at least one peer. The peer, the seed server, and the tracker server operate such that the P2P network is managed based on the distance of each peer from the seed server.

Abstract: A method and apparatus of improving capacity of channel is disclosed. A vector X(t) is generated based on a cycle period 1/T of a wide-sense cyclo-stationary (WSCS) noise and a whitening filter W(t) for decorrelating the WSCS noise in frequency domain. A scalar signal X(t) is generated by shifting the vector X(t) in the frequency domain.

Abstract: A method of a frequency-domain equalization to jointly suppress inter-symbol interference (ISI) and data-like co-channel interference (CCI) includes receiving a transmit signal over a channel, generating a vector by sampling and converting the transmit signal to a frequency domain signal; generating an equalized vector by multiplying an equalization matrix to the vector generated by converting; generating an estimate of data vector by inverse converting the equalized vector; and recovering data included in the transmit signal based on the estimate of data vector, wherein the equalization matrix is generated by approximating a frequency domain correlation matrix. Significant computational complexity is reduced than the LMMSE equalization while resulting in almost no performance degradation compared to the LMMSE equalization.

Abstract: A method of sharing spectrum with a legacy communication system includes acquiring spectrum correlation of the legacy communication system, and generating a transmit waveform based on the spectrum correlation. Unlike conventional cognitive radios that utilize spectrum holes only, the proposed method can also utilize spectrally correlated frequency components where primary-user signals are present.

Abstract: A method and apparatus for processing moving image ancillary information, based on a script, is provided. The method includes receiving a user command for inputting ancillary information, where the ancillary information includes a script for a moving image being played. The method further includes storing the ancillary information input by a user, searching for and extracting the stored ancillary information during playback of the moving image, and outputting the extracted ancillary information to an image display screen using the script.

Abstract: Provided are an apparatus, a method and a system for providing content in a media server, and, more particularly, an apparatus, a method and a system for providing content in a media server, in which content in the media server can be expressed as RSS data which can allow users to access the content through an RSS reader. The apparatus includes an RSS-converting unit which converts content information collected through a browse action or a search action into RSS data, and a web service unit which provides RSS data generated by the RSS-converting unit to external devices.

Abstract: A communication method for implementing a real-time streaming using hypertext transfer protocol (HTTP) in a network is provided. Chunked encoding of HTTP is applied so that information can be exchanged between a server and a client while an HTTP request is being progressed. Therefore, bidirectional communication between the client and the server using HTTP is possible without modifying an existing HTTP protocol, and real-time transmission can be implemented.