摘要:
An apparatus and method for detecting synchronization and signals using block data processing in a receiving system are provided. To process an input signal, a cumulative matrix is obtained from an input vector signal for each frame generated from the signal. A primary eigenvector is extracted from the cumulative matrix, and the maximum value of a correlation vector is calculated from the extracted primary eigenvector. A time delay is detected by comparing the calculated maximum value of the correlation vector with a first threshold value, and a delay correlation vector is calculated from the detected time delay. Finally, synchronization and signals are detected by comparing the calculated delay correlation vector with a second threshold value.
摘要:
An apparatus and method for detecting synchronization and signals using block data processing in a receiving system are provided. To process an input signal, a cumulative matrix is obtained from an input vector signal for each frame generated from the signal. A primary eigenvector is extracted from the cumulative matrix, and the maximum value of a correlation vector is calculated from the extracted primary eigenvector. A time delay is detected by comparing the calculated maximum value of the correlation vector with a first threshold value, and a delay correlation vector is calculated from the detected time delay. Finally, synchronization and signals are detected by comparing the calculated delay correlation vector with a second threshold value.
摘要:
A method of operating a data storage device is provided. Size information of write data and write speed information is received from a host. A first write area is determined to store the write data based on the size information and the write speed information. The write data is received from the host. The write data is written to the first write area using at least one method selected among a plurality of write methods according to the write speed information.
摘要:
An electric stimulator for alpha-wave derivation is characterized in that frequency selected from a range of 1 Hz to 50 Hz, preferably, 7 Hz to 14 Hz, and an output voltage are applied to auricle of a patient's ears to derive alpha-waves, and that cycle and intensity of stimulation are varied depending upon body temperature and blood sugar. Prompt reaction may be obtained by directly applying the voltage to the ears, and the reaction may continue when stimulation is extended. In addition, it is suitable to treat various diseases having common cause due to stress or arousal reaction in the human body.
摘要:
Provided is a module and method for semantic negotiation. In various aspects, it is possible to provide an optimized service to a mobile terminal and a user, without prior knowledge of a service that the user prefers to use, or without a client module of a tightly coupled configuration. The optimized service may be provided by performing a semantic negotiation based on one or more ontologies. Also, it is possible to improve convenience of the user by automatically performing the semantic negotiation between the mobile terminal and a service server without intervention of a user.
摘要:
Provided is a high resolution distance ranging apparatus using an ultra-wideband (UWB) communication. The apparatus includes: a first spectrum analyzer for extracting a frequency component corresponding to multipath time delay from a reception signal; a second spectrum analyzer for acquiring a noise subspace of the extracted frequency component and extracting a frequency component where maximum power is located from a frequency spectrum based on the noise subspace; a time of arrival (TOA) extractor for extracting TOA based on the frequency component where maximum power is located.
摘要:
An electric stimulator for alpha-wave derivation is characterized in that frequency selected from a range of 1 Hz to 50 Hz, preferably, 7 Hz to 14 Hz, and an output voltage are applied to auricle of a patient's ears to derive alpha-waves, and that cycle and intensity of stimulation are varied depending upon body temperature and blood sugar. Prompt reaction may be obtained by directly applying the voltage to the ears, and the reaction may continue when stimulation is extended. In addition, it is suitable to treat various diseases having common cause due to stress or arousal reaction in the human body.
摘要:
The proposed invention relates to the interference-free Ultra-Wide Band (UWB) wireless communication system using spreading codes with low correlation duration or Zero Correlation Duration (ZCD) property, the communication processing technique of the system and the record media of the program through the computer.
摘要:
In various aspects, it is possible to provide an optimized service to a mobile terminal and a user, without prior knowledge of a service that the user prefers to use, or without a client module of a tightly coupled configuration. The optimized service may be provided by performing a semantic negotiation based on one or more ontologies. Also, it is possible to improve user convenience by automatically performing the semantic negotiation between the mobile terminal and a service server without user intervention.
摘要:
Provided is a high resolution distance ranging apparatus using an ultra-wideband (UWB) communication. The apparatus includes: a first spectrum analyzer for extracting a frequency component corresponding to multipath time delay from a reception signal; a second spectrum analyzer for acquiring a noise subspace of the extracted frequency component and extracting a frequency component where maximum power is located from a frequency spectrum based on the noise subspace; a time of arrival (TOA) extractor for extracting TOA based on the frequency component where maximum power is located.