Sungkyunkwan University

Samsung Electronics Co., Ltd.

Seokho Yoon

Keunhong Chae

Youngpo Lee

Dahae Chong

Junhwan Kim

Seung Goo Kang

Mina Kim

Jaeyung Yeo

Jaeseok Park

Gajin Song

Donggeon Kim

Hwangki Min

Sungmin Rhee

Yuwon Lee

Wonho Ryu

Lyesuk Lee

Youngyoon Lee

Chungki Lee

Chonghan Song

Sangho Ahn

Haenam Yang

Taeung Yoon

Jooseuk Kim

Seungyeol Yoo

Minhyok Bang

Junyeop Lee

Dongjoo Lee

An electronic device may include a wireless communication circuit, a memory, and a processor. The memory may store instructions that allow, when executed, the processor to: obtain context information associated with the state of the electronic device, and contents information being provided by the electronic device; extracting first keywords on the basis of the context information and the contents information; analyze the keyword level for the first keywords; changing the first keywords into a superordinate concept according to preset keyword levels to obtain second keywords; and transmit the second keywords to at least one server by using the wireless communication circuit. Other various embodiments identified through the specification are possible.

Electronic device for providing content recommendation service, and method therefor

Various embodiments of the present disclosure relate to an electronic device and a method for managing a contact thereof. The electronic device can include: at least one processor, and a memory operatively coupled to the at least one processor. The memory can store instructions which, when executed, cause the at least one processor to: collect data related to a contact of a specified user, extract at least one piece of individual feature information by analyzing the collected data, provide differentiated individual identity information by comparing the extracted individual feature information with individual feature information of other users, and store the provided individual identity information in the memory in conjunction with the contact of the specific user.

Electronic device and method for managing contacts thereof

An electronic device is provided. The electronic device includes a display, a communication module, at least one processor operatively connected to the display and the communication module, and a memory operatively connected to the at least one processor, and the memory may store instructions which, when executed, cause the at least one processor to display, on the display, one or more keywords for searching for a content, to arrange and display, according to a designated criterion, one or more first categories among subordinate categories associated with the first keyword and one or more first contents associated with the first keyword, in response to identifying that a first keyword is selected among the one or more keywords, to arrange and display, according to the designated criterion, one or more second categories among subordinate categories associated with a selected category and one or more second contents associated with the selected category in the case that a selection input to one of the one or more first categories is identified, and to provide the selected content in the case that a selection input to one of the one or more first contents is identified.

Electronic device for searching for content and method thereof

An electronic device, according to various embodiments of the present disclosure, include: a communication module configured to receive a keyword list that includes a topic keyword and one or more related keywords concerning the topic keyword from another electronic device; and a processor configured to create a topic channel by using the keyword list, collect social media data by using the one or more related keywords, extract related content by analyzing the social media data, and provide the social media data and the related content to the other electronic device through the topic channel.

Method for providing social media content and electronic device using the same

A method of predicting a location of a rendezvous and an electronic device for providing the same are provided. The electronic device includes a display unit configured to display a screen executing a schedule management service application and a predicted rendezvous, a storage unit configured to store schedule information input into the application, data related to a place and a region, and a user location history, and a controller configured to recognize the input of the schedule information, score place data based on a schedule place name of the schedule information, and predict a rendezvous based on at least one piece of place data having a high score among the pieces of scored place data.

Method of predicting location of rendezvous and electronic device for providing same

There is provided a method of selecting a satellite for positioning in a global navigation satellite system, which includes: receiving satellite signals from satellites that a receiver can receive; calculating DOP where pseudorange weight is applied for each of satellite signal combinations including at least four or more of the satellite signals by the receiver; and selecting a satellite signal combination having the smaller DOP than a standard in the satellite signal combinations by the receiver.

Method of selecting satellite for positioning in global navigation satellite system, satellite signal receiver, and method of creating DOP index

Disclosed herein are a method of generating a correlation function with no side-peak and a system for tracking a BOC signal in order to synchronize the BOC signal. The method of generating a correlation function includes step Sof generating sub-correlation functions {S(&#x3c4;)}, step Sof generating a first final correlation function R(&#x3c4;) by combining some of the sub-correlation functions, and step Sof generating a second final correlation function R(&#x3c4;) by combining R(&#x3c4;) with each of the remaining sub-correlation functions that have not been used for the combination at step S. The BOC signal is one or more of BOC(kn,n) and BOC(kn,n) signals.

Method of generating correlation function with no side-peak and system for tracking binary offset carrier signal

The method includes converting, by the receiver, an input signal into a return-to-zero (RZ) signal, generating, by the receiver, a first summation signal by performing an exclusive-or (XOR) operation on the RZ signal and a delayed signal obtained by delaying the RZ signal by a reference time, collecting, by the receiver, n-length seed codes from the first summation signal, generating, by the receiver, a PN code based on the seed codes, and generating, by the receiver, a second summation signal by performing an XOR operation on the PN code and the delayed signal.

Acquisition method for pseudo noise code at receiver and receiver for acquiring pseudo noise code

A method of spectrum sensing and an apparatus for spectrum sensing are provided. A method of spectrum sensing involves partitioning, by a processor, a spectrum sensing section into a plurality of sub-periods each having a same size, performing energy detection in each of the plurality of sub-periods, and determining whether a primary user's signal is present in the spectrum sensing section based on presence of a primary user's signal in each of the plurality of sub-periods and a test statistic in each of the plurality of sub-periods.

Cognitive radio apparatus and method for performing spectrum sensing and comparison between spectrum sub-periods

A method of generating a correlation function, a method of tracking a signal, and a signal tracking apparatus are provided. The method of generating a correlation function involves receiving a CBOC(6,1,1/11) signal, interpreting a subcarrier pulse period of the CBOC(6,1,1/11) signal as a subcarrier pulse period of BOC(6,1), combining partial correlation functions constituting an autocorrelation function of CBOC(6,1,1/11) to generate a correlation function, and weighted-combining the correlation function to generate an unambiguous correlation function.

Method of generating correlation function, method of tracking signal and signal tracking system

There is provided a method of creating an AltBOC correlation function that includes: receiving an AltBOC signal by a receiver; analyzing a subcarrier of the AltBOC signal into eight partial subcarriers having the same period by the receiver; creating partial correlation functions by correlating each of the eight partial subcarriers with the AltBOC signal by the receiver; and creating a resultant correlation function by combining the partial correlation functions by the receiver.

Method of creating AltBOC correlation function, method of tracking AltBOC signal, and system for tracking AltBOC signal

A method of selecting a transmission parameter and a spectrum allocation apparatus are provided. The method of selecting a transmission parameter involves collecting frequency band information comprising a frequency bandwidth and communication environment information comprising a power density of noise, constituting a plurality of single-objective fitness functions comprising a bandwidth fitness function based on data transmission using two frequency bands, using the frequency band information and the communication environment information, constituting a multi-objective fitness function obtained by assigning a weight value to each of the plurality of single-objective fitness functions, and selecting the transmission parameter by applying a genetic algorithm to the multi-objective fitness function.

Method of selecting transmission parameter and dynamic spectrum allocation apparatus

A method of estimating a frequency offset based on a training symbol in a receiver of an orthogonal frequency division multiplexing (OFDM) system, includes receiving a first training symbol having a periodicity and a predetermined second training symbol, and calculating a correlation value for the first training symbol based on a coherence phase bandwidth (CPB). The method further includes determining a position of a peak value from the correlation value for an integer multiple frequency offset candidate based on a threshold value, and calculating a correlation value for the second training symbol based on the CPB. The method further includes estimating a position corresponding to a maximum value of the correlation value for the second training symbol as the frequency offset based on the position of the peak value.

Frequency offset estimation method in OFDM system and OFDM receiver using the same

Disclosed is a cooperative spectrum sensing (CSS) method. The CSS method includes receiving, by a detector of secondary users, observation vectors which are use state information of a spectrum band allocated to a PU in a cognitive radio (CR) network, generating, by the detector, an analysis result value with respect to each of the observation vectors using GLRT with respect to order statistics of reception samples taking non-Gaussian noise into consideration, transmitting, by the detector, the analysis result value to a fusion center unit; and fusing, by the fusion center unit, the analysis result value to determine whether the spectrum band is used.

Cooperative spectrum sensing apparatus and cooperative spectrum sensing method

A method and an apparatus of estimating a frequency offset in a wireless communication system are provided. An orthogonal frequency division multiplexing (OFDM) receiver performs envelope equalized processing (EEP) with respect to a reception signal and calculates a partial periodogram with a plurality of test values based on the reception signal which goes through the EEP. The OFDM receiver estimates a first frequency offset, a second frequency offset, and a third frequency offset based on two partial periodograms adjacent to each other among the partial periodograms for the plurality of test values.

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Suwon-si, South Korea

Seokho Yoon