Abstract:
PURPOSE: A portable terminal device supporting a distributed interface is provided to utilize a camera mounted on an external device thereby enabling a high-performance camera mounted on an external device to be used for the portable terminal device without replacing the portable terminal device. CONSTITUTION: A hardware abstraction layer module (200) includes an external device hardware abstraction layer module to support access to an external device other than a portable terminal device. An application framework (400) includes an external device management module to manage the external device. An application layer module (500) includes a distributed device control application to enable a user to control external devices. A wireless communications supporting module (600) supports wireless communications such as a wireless modem or Wi-Fi. The external device hardware abstraction layer module receives information about the eternal device by using the wireless communications supporting module. [Reference numerals] (210) External device HAL; (410) External device management module; (510) Disperse device removal application; (600) Wireless modem; (AA) Application 1; (BB) Management module 1; (CC) Management module 2; (DD) Other library module; (EE) Modem API; (FF) Driver HAL; (GG) Existing driver
Abstract:
PURPOSE: An apparatus for connecting a low power mode terminal is provided to search for a terminal in the other power mode while maintaining the characteristic of a terminal. CONSTITUTION: A first zigbee ratio module(100) has a plurality of sending modes and receiving modes. A second zigbee ratio module(200) exchanges a pilot with the first zigbee module. The second zigbee module has a plurality of the sending modes and the receiving modes. The first and second zigbee modules connect a slot which detects a pilot in the sending modes and the receiving modes.
Abstract:
PURPOSE: An adaptive OSIC(Ordered Successive Interference Cancellation)-SD(Sphere Decoder) and a decoding method using the same are provided to greatly reduce the complexity of a conventional SD by reducing an operation amount of a decoder. CONSTITUTION: A receiving unit(210) receives a signal from the outside through an antenna. The receiving unit changes a received signal into a form suitable for decoding. A channel estimating unit(220) estimates a channel of a receiving symbol based on the signal converted through the receiver. A decoding unit(230) decodes the receiving symbol estimated by the channel estimating unit in an OSIC(Ordered Successive Interference Cancellation) decoding method or a SD(Sphere Decoder) decoding method according to a SNR(Signal-To-Noise Ratio) range. The decoding unit comprises a MMSE(Minimum Mean Square Error) decoder finding a coordinate position of the receiving symbol estimated by the channel estimating unit, an OSIC decoder decoding the receiving symbol passing the MMSE decoder according to the SNR range, and a Chan-Lee SD(Sphere Decoder) decoder.
Abstract:
본 발명은 지그비 시스템에서의 송/수신 장치에 관한 것으로, 더욱 상세하게는 수신 장치에서 수신된 신호 처리 시 에러율을 감소시키고, 송신 장치에서 전송할 신호 처리시 전송률을 향상시킬 수 있는 지그비 시스템에서의 송/수신 장치 및 송/수신 장치에서의 신호 송수신 방법에 관한 것이다. 특히, 본 발명에 따른 송/수신 장치는, 전송할 데이터의 이진 데이터를 데이터 심벌로 매핑시키고, 심벌을 칩 값으로 매핑하고, 칩 코드를 이용해 신호를 전 대역폭으로 확산시킨 후 미리 설정된 복조 방식을 이용하여 변조를 수행하고, 심볼간 간섭을 차단하고 주파수 대역폭을 증가시킨 신호를 전송하는 송신부; 수신된 신호에 대해 왜곡을 보상한 후 심볼간 간섭을 차단하고, 주파수 대역폭을 증가시킨 후 상기 미리 설정된 복조 방식을 이용하여 복조를 수행하고, 미리 설정된 확산 요소를 이용하여 확산시킨 후 출력되는 데이터 심벌을 이진 정보로 매핑시켜 바이너리 데이터로 출력하는 수신부를 포함하는 것을 특징으로 한다. 이렇게 함으로써 송수신되는 신호의 에러율 및 전송률을 향상시킬 수 있게 된다.