Abstract:
자동이득제어방법 및 이를 위한 장치가 개시된다. 자동이득제어방법은 주파수 대역 집합에 포함된 주파수 대역 신호 각각의 이득을 보정하기 위한 증감값을 계산하는 단계, 계산된 증감값들 중에서 최소값을 대표값으로 결정하는 단계, 및 결정된 대표값을 기초로 주파수 대역 집합 신호의 크기를 보정하기 위한 공통이득값을 보정하는 단계를 포함한다. 자동이득제어, AGC(Automatic Gain Control), 신호 크기 보정, 신호 크기 재보정
Abstract:
PURPOSE: A method and apparatus for data rate matching in a mobile communication system are provided to have a signal processing function for parallel input data in a data rate deinterleaving process by applying a sub block interleaver to a decoding stage of a receiver. CONSTITUTION: An apparatus for data rate matching includes a plurality of sub block interleavers(110), a bit collection part(130), and a bit selection part(150). The sub block interleaver performs interleaving for three information bit streams respectively inputted in parallel. The interleaved data streams are collected in a virtual circular buffer of the bit collection part. The bit selection part selectively outputs bits according to the size of an output bit. The bit selection part selects the bits according to the size of the output bit.
Abstract:
PURPOSE: Ship safety navigation equipment and method are provided to promote a safe navigation by providing a real-time control image to all ships periodically or depending on needs. CONSTITUTION: A ship terminal device(100) is installed. A ship control center terminal device(300) is equipped in a ship control center. A ship terminal device receives a control image and transmits a real-time navigation image to the ship control center terminal device. The ship control center terminal device displays a real-time navigation image through an image display unit and transmits a control image and navigation information to a ship terminal device.
Abstract:
PURPOSE: An image sensor communicating apparatus and a method for correcting errors are provided to minimize interference between received light sources by compensating the distance variation of the light sources based on the distance, the size, and the brightness of the light sources. CONSTITUTION: An image sensor(11) photographs images containing optical signals from received optical sources. A zoom controller(12) controls the zooming function of the image sensor. A focus controller(13) controls the focus of the image sensor. A data acquiring part(14) acquires data from the images. An error rate measuring part(15) measures error rate based on the acquired data. If the error rate increases, an operation controlling part(17) operates the zoom controller or the focus controller.
Abstract:
Provided is a bit calculation method, which accurately and easily calculates how many bits are transmitted by codeword per PDSCH in advance before a modulator performs modulation by TTI unit on a PCH or a DL-SCH transferred by a TrCH encoder, in a base-station modulator applied to an LTE-advanced system. Accordingly, the bit calculation method enables smooth data transmission, and easily checks data transmission error.
Abstract:
PURPOSE: A visible ray wireless communication device and a method thereof are provided to realize visible ray wireless communication while maintaining a speed of visible ray wireless communication. CONSTITUTION: A brightness signal generating unit(100) adjusts a pulse width of an on section pulse in response to brightness request information. A light driving unit(300) adjusts a location of the on section pulse to distinguish bit data which are transmitted per bit unit time while the light driving unit maintains the pulse width of the on section pulse.
Abstract:
PURPOSE: A data derate matcher for providing HARQ and method thereof are provided to form a sub block deinterleaver, thereby reducing the hardware processing time of a receiving terminal derate matcher. CONSTITUTION: A control parameter generating unit(201) generates a control parameter to separate the bit of an input bit string. A bit separating unit(204) outputs three kinds of bit strings through the control parameter and a modulus operation about each bit of the input bit string. Address generators(220,222,224) generate the address of available data to be used for a deinterleaving process about the data of each bit string. Sub block deinterleavers(214,216,218) output decoding data by successively inputting the data of addresses designated by the address generators.
Abstract:
PURPOSE: A feedback generating method and system thereof for uplink transmission power control are provided to determine TPC(Transmit Power Control) control unit and to generate feedback information. CONSTITUTION: A transmission power controlling value setup unit(112) sets up transmission power controlling value based on the movement speed of a terminal. A SINR(Signal to Interference Noise Ratio) calculating unit(113) calculates controlled SINR value based on the SINR value of an uplink information receiving unit. A feedback information re-generating unit(114) regenerates feedback information by using the controlled SINR value.
Abstract:
PURPOSE: An RF receiver of a 3G LTE mobile communication system, transmitter, and transceiver which uses direct conversion are provided to convert a high frequency carrier band signal in order not to pass through a intermediate frequency band. CONSTITUTION: An I/Q demodulator(333) demodulates an output signal of a band pass filter into I/Q(In-phase/Quadrature-phase). Reception end gain amplifiers control the gain of the output signal of the I/O demodulator. A low pass filter(336) selectively passes through the band of a predetermined channel. Reception end differential amplifiers amplify the band of the predetermined channel.
Abstract:
PURPOSE: A transmitter, a receiver for visible light communication and a method using the same are provided to remove a flickering effect of lighting when performing data transmission in LED visible light wireless communication. CONSTITUTION: A visible light wireless communication transmitter comprises a source code recognition unit(910) and a line coding unit(920). The source code recognition unit recognizes a source bit column as a source code of a first coefficient, wherein the source code is formed by bit unit. The line coding unit encodes each source code as an encoding code of a second coefficient which is larger than the first coefficient. In the encoding code, the bit number corresponding to 1 is same as the bit number corresponding to 0.