Abstract:
본 발명은 무선 통신 단말기의 동작 방법에 관한 것이다. 본 발명의 무선 통신 단말기의 동작 방법은 사용자 인터페이스를 통해 이벤트를 검출하는 단계, 이벤트 검출에 응답하여 무선 통신 채널을 통해 위치 정보를 검출하는 단계, 그리고 검출된 이벤트의 정보 및 검출된 위치 정보를 사용자 인터페이스로 출력하는 단계로 구성된다.
Abstract:
PURPOSE: A distortion compensation apparatus and a distortion compensation signal transmission method are provided to convert the transmission characteristic of a non-linear apparatus by using predetermined transmission characteristic. CONSTITUTION: A pre-distortion unit(120) performs pre-distortion compensation of an input signal. A transfer characteristic conversion unit(122) applies the pre-distortion compensated signal to a non-linear device(10). The transfer characteristic conversion unit converts the transfer characteristic of the non-linear device. A distortion information extraction unit(124) extracts the distortion information.
Abstract:
PURPOSE: A pre-distortion apparatus and method for compensating non-linear distortion are provided to stably compensate the non-linear characteristics of a non-linear device if the non-linear characteristics of the non-linear device are changed by the lapse of times or environment. CONSTITUTION: A pre-distortion filter(110) provides inputting signals and outputting signals which pre-distorts the inputting signals based on a filter which is modeled using the past values of the inputting signals. A pre-distortion output estimating part(120) estimates the characteristics of a non-linear device based on signals processed in the non-linear device and the outputting signals and calculates the desired outputting signals of the pre-distortion filter based on the estimated characteristics of the non-linear device. An adaptive algorithm driving part(130) compares the outputting signals and the desired outputting signals.
Abstract:
PURPOSE: A device and a method for calculating modular-3 are provided to appropriately utilize characteristic of drainage of three, thereby reducing calculation process less than existing modular-3. CONSTITUTION: A device stores location of top bit of inputted target value in POS value(102). The device substitutes 0 for continuous two 1 among inputted binary A value from LSB(Least Significant Bit)(104). The device stores location of 1 which is a biggest weight among the binary A value(106). If POS is bigger than 1, the device initializes all the B value into 0(108,110). The device subtracts B value generated as a random drainage of three from the A value(112).
Abstract:
PURPOSE: A system for renting resource in a wireless telecommunication system, and a device thereof are provided to improve frequency spectral efficiency a lot. CONSTITUTION: If a request message of a share frequency assignment is received from wireless communication systems, a frequency management bureau(200) leases out a share frequency assignment for a lease time. If the lease time is expired, the frequency management bureau collects the share frequency assignment. Frequency monitors(210,220,230) are installed in a region using a wireless telecommunication system and produce and offer use information of public frequency resources. The frequency management bureau stores the information of the wireless network leasing the share frequency assignment and the lease time.
Abstract:
본 발명의 이동통신 시스템에서 2차 루프 필터를 사용하는 주파수 오차 추정기 및 그 동작방법은 기준 코드를 사용하는 이동통신 시스템에서 송신기와 수신기 사이에 발생하는 주파수 오차를 산출하여 시간 변동에 대한 추종성을 손상시키지 않고 높은 추정 정밀도를 제공한다. 본 발명은 수신 신호와 기준 코드를 통하여 상관관계 값을 산출하는 상관기, 상기 상관관계 값을 이용하여 cross-product 오차를 산출하고, 상기 상관기로부터의 이전 샘플에 대한 상관관계 값을 이용하여 주파수 오차를 검출하여 출력하는 주파수 오차 검출기 및 상기 주파수 오차를 필터링하여 신호대잡음비(S/N)를 개선하는 루프 필터를 포함하는 주파수 오차 추정기를 제공한다. 주파수 오차 검출기, 주파수 오차 추정기, 2차 디지털 루프 필터
Abstract:
A frequency error estimator using the second order loop filter in a mobile communication system and an operating method thereof are provided to supply high estimation accuracy without damaging tracing about time variation of a frequency. A correlator(10) produces a correlation value through a received signal and a reference code. An FED(Ferquency Error Detector)(20) produces a cross-product error through the correlation value. The FED detects a frequency error through the correlation value about a previous sample from the correlator. The frequency error is filtered so that a loop filter improves an S/N(Signal to Noise) ratio.
Abstract:
A method and a device for decoding a turbo code are provided to give a weighted value to a systematic bit by comparing a received error data with a LLR(Log Likelihood Ratio) value of the systematic bit of a retransmission data. A transceiving part(110) exchanges a data with a transmitter which transmits the data. The transceiving part exchanges an encoded data by using a turbo code as a channel code. A decoding part(120) decodes the received data by using a turbo decoder. An error checking part(130) checks an error of the data. A memory(140) stores the data. A LLR calculation part(150) calculates a LLR value of a systematic bit of the data. A comparing part(160) compares the LLR value of the systematic bit of the data. A data generating part(170) generates a coupling data.
Abstract:
A method for managing information in a radio communication system is provided to search data information by using burst location information, thereby improving data transmission efficiency. System control information and data information are received from an RLC(Remote Link Control) layer(110) through a logical channel(150). The information is transmitted to a physical layer(130) after the received system control information and data information are mapped on a transmission channel(160). The data information is converted into a burst type of the physical layer. A radio frame recording the system control information and the converted data information is generated.
Abstract:
본 발명은 모듈러(modulo) 3 연산 장치 및 방법에 관한 것으로, 보다 상세하게는 최소의 논리회로로부터 4*M 비트(bit) 이진 정수 N에 대한 모듈러 3 연산을 수행할 수 있는 연산 방법에 관한 것이다. 종래의 모듈러 연산 장치는 두 개의 카운터를 모두 해당 정수만큼 카운트 해야 하므로 입력된 정수 N이 클수록 많은 연산 시간을 소요하게 되는 단점이 있다. 이에 본 발명에서는, 두 번의 AND 연산에 따른 논리회로의 추가로 효율적으로 임의의 정수 N에 대한 모듈러 3의 연산을 수행하여 보다 신속한 모듈러 결과값을 산출할 수 있는 모듈러 3 연산 기술을 마련하고자 한다. 모듈러 3, 속도정합, 3GPP