Abstract:
초고주파대역통신시스템에서통신링크차단방지를위한통신방법및 그장치가제공된다. 제1 단말이자신과같은빔에서서비스받는단말들로이루어진협력그룹멤버들의리스트를획득한상태에서, 통신링크차단이발생한경우, 제1 단말이상기리스트중에서하나의멤버에해당하는제2 단말로통신링크차단을통보하고협력서비스를요청한다. 이후, 제1 단말이제2 단말을통하여기지국으로부터전송되는서비스에따른정보를수신받는다.
Abstract:
PURPOSE: A signal amplifier, a wireless transmitter, and a method thereof are provided to increase amplifier efficiency by supplying a bias to an amplifier based on size change of a pulse quantization signal. CONSTITUTION: A signal amplification device(10) comprises a signal modulation part(100), a bias generating part(120), and a signal amplification part(130). The signal modulation part outputs a digitized multilevel quantization signal by quantizing an envelope signal into a multilevel. The bias generating part tracks size modulation of a pulse quantization signal inputted into the signal amplification part. The bias generating part provides a bias to the signal amplification part based on the tracking result. The signal amplification part amplifies the pulse quantization signal in which the multilevel quantization signal and a phase signal are combined. [Reference numerals] (100) Signal modulation part; (120) Bias generating part; (130) Signal amplification part
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:
본 발명은 이동통신 시스템에서의 전력제어 장치 및 그 방법에 관한 것으로, 고속으로 이동하는 이동통신 단말기에 대한 효율적인 하향링크 전력제어를 위해, 단말기가 자신의 이동속도에 따라 CQI(Channel Quality Indicator) 보고 빈도 조정을 요청하고, 기지국이 단말기로부터의 CQI 보고 빈도 조정 요청에 따라 상기 단말기의 하향링크 데이터 전송속도 및 상향링크 데이터 전송속도를 이용하여 최적의 CQI 보고 빈도를 결정하기 위한, 이동통신 시스템에서의 전력제어 장치 및 그 방법을 제공하고자 한다. 이를 위하여, 본 발명은, 단말기에서의 전력제어 장치에 있어서, 이동속도를 측정하기 위한 이동속도 측정수단; 상기 이동속도 측정수단에서 측정한 이동속도가 임계치를 초과함에 따라 기지국으로 CQI(Channel Quality Indicator) 보고 빈도 조정을 요청하고, 상기 기지국으로부터의 CQI 보고 빈도 정보에 따라 CQI 보고 빈도를 결정하여 CQI를 보고하기 위한 CQI 처리수단; 및 상기 CQI 보고에 따른 상기 기지국으로부터의 전력 제어신호에 따라 전력제어를 수행하기 위한 전력 제어수단을 포함한다. 이동통신, 단말기, 기지국, 전력제어, CQI 보고 빈도, 상향링크 데이터 전송속도, 하향링크 데이터 전송속도
Abstract:
A signal transmitting/receiving device and a control method thereof are provided to efficiently improve signal to noise ratio by performing a DC offset detection/correction and a carrier wave leakage in applying a power source. A transmitting part(200) corrects a receiving signal about a carrier wave leakage, and modulates the corrected signal. A receiving part(400) demodulates a signal received from the transmitting part, and performs a DC offset correction about the demodulated signal. A base-band processing part(100) controls a connection setting between the transmitting part and the receiving part. The base-band processing part detects a DC offset about the signal received from the receiving part. The base-band processing part controls a DC offset correction of the receiving part and a carrier wave leakage correction of the transmitting part based on information about the detected DC offset.
Abstract:
An apparatus and a method for compensating for carrier leakage in a quadrature modulation system are provided to realize a carrier leakage compensating apparatus simply by using various quadrature modulators, thereby suppressing carrier leakage. A quadrature modulation unit(300) outputs a leakage carrier signal about an in-phase path and a quadrature phase path. The in-phase path and the quadrature phase path are made by the first and second bias voltages and difference between the first and second control voltages. A coupler(500) extracts a partial leakage carrier signal among the outputted leakage carrier signals. A detection unit(600) detects a size of the extracted leakage carrier signal to measure a carrier leakage amount. The detection unit converts the leakage carrier signal into a DC signal. Controllers(900,910) output the first and second control voltages by comparing the DC signal with the first and second reference voltages.