Abstract: Disclosed is an electronic commerce method. An electronic commerce method according to an embodiment of the present invention comprises the steps of: receiving a purchase request signal from a buyer; transmitting the purchase request signal to a seller; receiving a video captured of the seller who has checked the purchase request signal; and transmitting the received video to the buyer.

Abstract: A method of providing service information using an electronic device is provided. The method includes receiving a service information packet, determining whether a service IDentification (ID) included in the received service information packet is a registered service ID, determining whether a service condition corresponding to the service ID and a registered condition are matched, and in response to determining that the service condition corresponding to the service ID and the registered condition are matched, displaying information corresponding to the matched condition.

Abstract: We disclose a shaping encoder configured to use a variable-length shaping code to implement fixed-input fixed-output (FIFO) probabilistic signal shaping. In various embodiments, the variable-length shaping code can be a variable-input fixed-output code, a fixed-input variable-output code, or a variable-input variable-output code. The FIFO functionality of the shaping encoder is enabled by a control circuit that operates to: (i) check an output-overflow condition for each bit-word to be encoded using the variable-length shaping code and (ii) switch the shaping encoder from using the variable-length shaping code to using a suitable FIFO code if the output-overflow condition is satisfied. Some embodiments of the shaping encoder can incorporate a conventional FEC encoder in a manner that substantially preserves the shaping gain realized by the shaping encoder.

Abstract: A transmission and reception method and apparatus for reducing a PAPR in an orthogonal frequency division multiplexing (OFDM) system are provided. A transmission method includes performing constellation rotation with respect to L input data symbols, performing L-point DFT spreading and circular extension on the constellation-rotated L data symbols to be K symbols, performing frequency domain (FD) windowing processing by multiplying the K circular-extended data symbols by a circular filter coefficient, and transmitting the processed data symbols.

Abstract: We disclose a transmitter that uses at least first and second fixed constellations in which the same bit-words are assigned to different respective constellation symbols of different respective transmit energies. The transmitter generates an outgoing data frame by first generating two data frames using the first and second constellations, respectively, and then selecting the one of the two data frames that has the lower overall transmit energy and discarding the other. The first and second constellations are constructed in a manner that enables the transmitter to realize a significant shaping gain. Some embodiments of the transmitter are compatible with the use of forward-error-correction coding and provide a shaping gain for the transmission of both information and parity bits. An example embodiment of the transmitter can advantageously be implemented with relatively low complexity by employing constellation mappers and demappers that operate using relatively small look-up tables.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method and apparatus for transmitting and receiving signals using a variable observation length in a multi-carrier system using the non-orthogonal transmission signal. A receiver performs fast Fourier transform on reception vectors contained in the signal, equalizes the fast Fourier transformed reception vectors by a 1-tap zero forcing equalizer, and applies a reception filter based on the observation length to the equalized reception vectors. A transmitter includes a transceiver configured to transmit and receive a signal, and a controller configured to cause the transceiver to transmit an indicator for a Modulation and Coding Scheme (MCS) level to a receiver based on a channel state, and transmit a signal applied with the MCS level to the receiver.

Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate after a 4th generation (4G) communication system such as long term evolution (LTE). A method for operating of a transmitting end in a wireless communication system includes allocating a first resource for a first service and a second resource for a second service, determining a precoder for controlling interference between the first service and the second service, precoding a first signal for the first service using the precoder, and transmitting the precoded first signal and a second signal for the second service through the first resource and the second resource. At least one part of the first resource overlaps with the second resource.

Abstract: Disclosed are an apparatus and a method for estimating a parameter of a multi path signal. The apparatus for estimating a parameter of a multi path signal includes: a plurality of pre-processing units configured to pre-process respective reception signals received through a plurality of antennas; a plurality of parameter converting units configured to approximate a parameter set of the respective pre-processed reception signals to have a sparse characteristic in a Doppler frequency and angle of arrival domain; and a parameter estimating unit configured to estimate an angle of arrival for a plurality of reception signals in each frequency region of the Doppler frequency and angle of arrival domain.

Abstract: A transmission and reception method and apparatus for reducing a PAPR in an orthogonal frequency division multiplexing (OFDM) system are provided. A transmission method includes performing constellation rotation with respect to L input data symbols, performing L-point DFT spreading and circular extension on the constellation-rotated L data symbols to be K symbols, performing frequency domain (FD) windowing processing by multiplying the K circular-extended data symbols by a circular filter coefficient, and transmitting the processed data symbols.

Abstract: An apparatus, e.g. an optical oscilloscope, includes an optical receiver front end, including an optical device, and an optical delay. The receiver front end is configured to receive at least one input optical signal and produce by the optical device at least first and second output optical signals. The receiver front end is further configured to gate said at least one input optical signal or said at least first and second output optical signals. An optical combiner is configured to combine said at least first and second output optical signals, and the optical delay is located in an optical path of said first optical output signal between said optical receiver front end and the optical combiner. An optical detector is configured to receive a combined optical signal from said optical combiner and to produce therefrom an analog-electrical signal representative of the combined optical signal.

Abstract: A method for controlling an electronic device including a touch panel, the method comprising: acquiring a first signal from a first area of the touch panel and acquiring a second signal from a second area of the touch panel; detecting whether a potential difference of the first signal and the second signal is larger than a preset threshold; and detecting whether a first touch corresponding to the first area and a second touch corresponding to the second area are performed by using one hand based on whether the potential difference of the first signal and the second signal is larger than the preset threshold.

Abstract: An electronic device is provided and includes a touch panel including a plurality of electrodes and a processor configured to obtain a measurement signal measured at each electrode of the plurality of electrodes and determine adherence information of the electronic device based on the measurement signal.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method and apparatus for transmitting and receiving signals using a variable observation length in a multi-carrier system using the non-orthogonal transmission signal. A receiver performs fast Fourier transform on reception vectors contained in the signal, equalizes the fast Fourier transformed reception vectors by a 1-tap zero forcing equalizer, and applies a reception filter based on the observation length to the equalized reception vectors. A transmitter includes a transceiver configured to transmit and receive a signal, and a controller configured to cause the transceiver to transmit an indicator for a Modulation and Coding Scheme (MCS) level to a receiver based on a channel state, and transmit a signal applied with the MCS level to the receiver.

Abstract: An electronic device is provided. The electronic device includes a communication module configured to request from at least one peripheral electronic device to transmit device information, and to receive the device information from the at least one peripheral electronic device. The electronic device also includes a control module configured to analyze attributes of content using content information if a content providing event occurs, to analyze attributes of the at least one peripheral electronic device using the device information and the attributes of the electronic device, and to determine at least one target device to provide the content to a user, according to the result of analyzing the attributes of the content and the result of analyzing the attributes of the electronic device and the at least one peripheral electronic device.

Abstract: Provided is a capacitive touch sensor which includes a flat panel display for displaying an image and a touch sensor panel positioned on the flat panel display or embedded in the flat panel display. The capacitive touch sensor may include: a driving clock generator configured to generate a plurality of time-periodic output signals by using a gate driver signal of the flat panel display, and apply the generated time-periodic output signals to the touch sensor panel and a receiver circuit unit; a driver configured to generate a driving signal of the touch sensor panel using a part of the output signals of the driving clock generator; and the receiver circuit unit configured to process noise contained in a signal received from the touch sensor panel, using the output signals.

Abstract: Protograph construction methods for generating convolutional LDPC code matrices are disclosed in which multi-equation problems of girth maximization are reduced or replaced using other techniques including (with limitation): finding base matrices with a unique set of non-repeating distance parameters, finding the minimum largest such distance parameter among solution-set matrices, and quasi-cyclic lifting of the generated convolutional LDPC code matrix. 4-cycles and select (avoidable) 6-cycles are thereby removed from the resulting convolutional LDPC code matrix, thereby resulting in significant performance gains.

Abstract: Disclosed are a method and an apparatus for transforming a data symbol for interference avoidance. The method for transforming a data symbol includes; dividing a plurality of proper data symbols into a plurality of data streams; granting individual spectral weightings to the plurality of respective data streams; combining the plurality of data streams granted with the individual spectral weightings into one final data stream; performing inverse discrete Fourier transform (IDFT) of the final data stream; and adding a cyclic prefix (CP) to the plurality of data streams that is subjected to the IDFT, wherein each of the plurality of data streams granted with the individual spectral weightings include an improper data symbol.

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: Disclosed are a method and an apparatus of interference alignment in a cellular network. The method of interference alignment in the cellular network includes: receiving, by a base station, an improper signal from a terminal; and decoding, by the base station, the improper signal based on an improper decoding vector, wherein the improper signal is a signal generated by only a modulation symbol corresponding to a real number value, the improper decoding vector is determined based on an improper precoding vector, and the improper precoding vector has only the real value and separates a real number space and an imaginary number space of a received signal.

Abstract: A method of providing service information using an electronic device is provided. The method includes receiving a service information packet, determining whether a service IDentification (ID) included in the received service information packet is a registered service ID, determining whether a service condition corresponding to the service ID and a registered condition are matched, and in response to determining that the service condition corresponding to the service ID and the registered condition are matched, displaying information corresponding to the matched condition.