Abstract:
본 발명은 등화기능을 구비한 터널용 지상파 디엠비 재난 방송 장치 및 방법에 관한 것으로서, 본 발명에 따른 지상파 디엠비 재난 방송 장치는 수신 안테나로 수신되는 다중 경로 신호나 도심 속 차량에 의한 도플러 효과를 제거하여 고품질의 지상파 디엠비 신호를 중계하고, 긴급 상황 발생시 지상파 디엠비 신호를 중계하던 채널에서 주파수 변경 없이 긴급 방송 서비스를 제공할 수 있는 것을 특징으로 한다. 등화기, 지상파 디엠비, 다중경로
Abstract:
PURPOSE: A transmitter, a transmitting method, repeating installation and a repeating method are provided to improve efficiency to use frequency bandwidth by uniting an additional signal used for a second wireless communications method with electric wave bandwidth used for a first wireless communications method. CONSTITUTION: A first signal generator(110) generates a transmission signal through a first wireless communications method. A second signal generator(120) generates an additional signal used for a second wireless communications method which is different from a first wireless communications method. A combiner(130) unites the additional signal with the transmission signal. A transmit unit(150) transmits the signal to the transmission bandwidth of the first wireless communications method. The additional signal detects a radio channel environment in which the signal is transmitted.
Abstract:
PURPOSE: A magnetic discrimination information attachment device and a method thereof are provided to add the separate magnetic discrimination information in the signal received from a sending station. CONSTITUTION: A receiver(100) receives the carrier signal from a transmission station within a DAB(Digital Audio Broadcasting) series transmission system. A detection unit(310) and a generating unit(320) searches null symbol position from the received carrier signal. A detection unit and the generating unit add the magnetic discrimination information signal. A detection unit and the generating unit process the received carrier signal by one type among the RF(Radio Frequency) type, and the IF(Intermediate Frequency) type and base band(Baseband) type.
Abstract:
PURPOSE: A disaster broadcasting providing method, broadcasting apparatus, multiplexer, and multiplexing method are provided to transmit a disaster broadcasting service signal of a specific region to a receiving terminal according to audio sampling frequencies. CONSTITUTION: A disaster message generating unit(100) generates first and second service streams. A first disaster broadcasting multiplexer(300_1) selectively inserts a null stream to the first service stream. The first disaster broadcasting multiplexer multiplexes a first service bit ratio in a first broadcasting channel standard. A second disaster broadcasting multiplexer(300_2) selectively inserts the stream stretched on the second service stream.
Abstract:
PURPOSE: A disaster broadcasting providing method and apparatus are provided to offer disaster broadcasting to each channel through one source service encoder with the insertion of an abnormally RS encoded result. CONSTITUTION: An Ensemble MUX(Multiplexer)(240) multiplexes the disaster message of the disaster message generator(100a) in the ETI(Ensemble Transport Interface) frame of an ETI frame generator(230). According to the bit rate of a transfer rate controller(110), video stream bit rate controllers(140a~140c) switch the normally RS(Reed-Solomon) encoded stream of RS encoders(130a~130c) and the null stream of the generators(150a~150c) of an abnormally RS encoded null stream through video stream switches(141a~141c).
Abstract translation:目的:提供灾难广播提供方法和装置,通过一个源服务编码器向每个信道提供灾难广播,并插入异常的RS编码结果。 构成:集成MUX(多路复用器)(240)将ETI帧发生器(230)的ETI(Ensemble Transport Interface)帧中的灾难消息发生器(100a)的灾难消息复用。 根据传输速率控制器(110)的比特率,视频流比特率控制器(140a〜140c)切换RS编码器(130a〜130c)的正常RS(里德 - 所罗门)编码流和发生器的空闲流 (141a〜141c)的异常RS编码的空流的(150a〜150c)。
Abstract:
PURPOSE: A method for increasing the performance of a pre-distorter and transmitter supporting the method are provided to use minimum complexity and costs, thereby reducing distortion of constellation. CONSTITUTION: A pre-distorter(130) pre-distorts attraction using a pre-distortion estimating value. A digital analog converter(140) converts the output of the pre-distorter into analog signals. An upper converter(150) modulates the frequency of the analog signals into a frequency band. A high power amplifier(160) amplifies the modulated signals. A gain controller(170) controls the gain of the amplified signal. An NMSE estimator(180) estimates an NMSE(Normalized Mean Square Error). A lower converter(190) modulates the frequency of the gain controlled signal into a base band. An analog digital converter(200) digitizes the modulated signal. A pre-distortion estimator(210) estimates a pre-distortion value.
Abstract:
PURPOSE: An apparatus and method for detecting a signal efficiently in a wireless communication system are provided to adjust the complexity and detection performance of a wireless system by variously changing the setup operation for signal detection. CONSTITUTION: A signal detection device of a wireless communication system comprises an antenna array(100), a setting unit(200), a detection unit(300), and a final signal selection unit(400). The detection unit performs a K-best detection to an α(α
Abstract:
PURPOSE: A method and method for transceiving additional data at a high speed by using a variable code set mapping are provided to increase data transmission rate according to the number of a diffusion code of a variable code set. CONSTITUTION: A variable code set storage unit(130) stores channel condition and a variable chord set. A mapping unit(140) selects a variable code set corresponding to channel condition. The mapping unit selects a preset spreading code corresponding to the supplementary data included in the preset size. A spreading/modulating unit(150) diffuses or modulates a data frame to be transmitted by using the selected diffused code.