Abstract:
본 발명의 일 실시예에 따르면, 이동통신 중계기를 이용하여 단말기 위치 정보를 제공하는 방법에 있어서, 단말기의 위치 및 이동 정보와 연관된 단말기 정보를 중계기가 수신하는 단계, 상기 단말기 정보 및 중계기 정보에 따라 상기 단말기의 위치 및 이동 정보를 검출하여 저장하는 단계, 및 상기 단말기의 위치 및 이동 정보와 연관된 피드백 정보를 제공하는 단계를 포함하는 중계기를 이용한 단말기 위치 정보 제공 방법이 제공된다.
Abstract:
PURPOSE: A digital pre-distorter based on a canonical piece-wise-linear model for the linearization of a power amplifier and an apparatus including the same are provided to prevent the diffusion of spectrum and the distortion of a signal due to the non-linearity of a high power amplifier. CONSTITUTION: A wireless telecommunications installation device(200) comprises an HPA(High Power Amplifier)(210) and a digital pre-distorter(220). The digital pre-distorter comprises a pre-distortion unit(225), a PWL(Piecewise-Linear) modeling unit(230), an operator(235), and a reverse calculator(240). The PWL modeling unit models the HPA. The operator calculates an error signal by subtracting an output signal of the PWL modeling unit in an output signal of the HPA. The PWL modeling unit updates fixed parameters for property modeling of the HPA. The reverse calculator calculates the reverse of a property which is modeled from the PWL modeling unit.
Abstract:
PURPOSE: A voice recognition dialing system and a method thereof on a wireless local area network performing the dialing operation by the voice recognition in a short distance wireless telephone terminal are provided to implement cheap call charge and short-range mobility by performing dialing by voice recognition. CONSTITUTION: A short distance wireless telephone terminal performs access point(20) and local area wireless communication. The access point stores a phone book consisting of the telephone number of the receiver and recipient information voice. The access point offers the telephone number of the receiver. The access point relays a call through the internet telephone network according to a call request to the telephone number of the receiver.
Abstract:
동일 채널 주파수를 증폭하여 서비스 커버리지 확장 및 음영지역 해소를 목적으로 하는 무선중계시스템에서 문제가 되는 중계시스템의 송신안테나로 방사되는 RF(Radio Frequency) 출력이 상기 중계시스템의 수신안테나로 궤환(Feedback) 되어지는 동일 주파수 간섭을 효과적으로 제거하여 중계시스템의 설치가 용이하고 일반적인 동일 주파수 중계시스템에 비해 시스템 이득(Gain)을 추가로 확보할 수 있도록 동일 주파수 간섭을 제거하는 중계시스템 장치 및 구현방법을 제공하는 것이다. 동일 채널 주파수, 간섭제거, 다중경로 간섭, DSP, 신호처리부
Abstract:
PURPOSE: An NMS(Network Management System) using a WAP phone is provided to enable an SMS phone connected to a web/WAP phone server to transmit an SMS message to an RF repeater, and to enable a WAP phone of the RF repeater to connect through a wireless Internet, thereby receiving state, alarm, and control information of the RF repeater. CONSTITUTION: An RF repeater(4) to be managed in a web/WAP phone server(3) by a network manager(1) is connected to a wire Internet network(2), and is registered in a manager WAP phone(9). When the RF repeater(4) is registered, the network manager(1) connects with a wireless Internet network(8) via other base station(10) through the WAP phone(9), and selects management information. The web/WAP phone server(3) provides the management information to the manager WAP phone(9) while storing repeater DB information transmitted from the RF repeater(4) in the web/WAP phone server(3). If a mobile manager inputs control information through the WAP phone(9) and transmits the control information to the web/WAP phone server(3), the web/WAP phone server(3) provides the control information to the RF repeater(4).
Abstract:
본 발명은 이동통신단말기를 이용한 중계기의 자동설정장치 및 방법에 관한 것으로, 이동통신단말기에서 측정된 통화품질을 결정하는 전파환경인 기지국 신호세기(RSCP: Received Signal Code Power) 및 신호대잡음비(EcIo : Energy per Chip over Interface noise) 값을 이용하여 중계기의 안테나 방향을 조절하도록 하며, 또한, 이동통신단말기에서 측정된 통화품질을 결정하는 전파환경인 기지국 신호세기(RSCP) 및 신호대잡음비(EcIo) 값을 이용하여 중계기 수신단의 증폭 이득을 자동 제어하도록 한 것이다.
Abstract:
The present invention is provided to effectively cancel only interference signals by not using an auto-correlation canceler or a digital filter, but by using a normalizer to cancel unnecessary noise signals generated by narrowband signals; and to enable the design of an ICS repeater for LTE wireless networks which requires a short system time delay. In a device to cancel interference of an ICS repeater using a normalizer, which outputs an error signal (e(n)) of which the interference signal is canceled by subtracting a predicted feedback signal (y′(n)) in an ICS engine unit from an original signal (d(n)) inputted through a reception antenna through a subtractor, the ICS engine unit comprises: a time delay unit to generate a reference signal (x(n)) which delays the error signal (e(n)) outputted through the subtractor; a normalizer to generate a new reference signal (x′(n)) by normalizing the characteristics of the narrowband signals of the reference signal (x(n)) outputted from the time delay unit; a coefficient generation unit to calculate an interference signal prediction coefficient (w(n)) by calculating correlation between the new reference signal outputted from the normalizer and error signal; and an FIR filter to generate a predicted feedback signal (y′(n)) by performing convolution between the reference signal from the time delay unit and prediction coefficient from the coefficient generation unit, and inputting the predicted feedback signal into the subtractor.