Abstract:
A channel interleaving/de-interleaving apparatus in a communication system using a low density parity check code and a control method thereof are provided to reduce error rate of an entire system by transmitting and receiving reliable LDPC(Low Density Parity Check). A channel interleaving/de-interleaving method in a communication system using a low density parity check code includes the steps of: encoding information data bit in a set encoding way to generate LDPC codeword; interleaving the LDPC codeword corresponding to a set cannel interleaving rule; and modulating the channel-interleaved LDPC codeword in a set modulation way to generate modulated symbol.
Abstract:
A cannel configuration method in a communication system using an orthogonal frequency division multiple access scheme and a transmitting/receiving apparatus and a method thereof are provided to maximize spectrum efficiency by using a time-frequency source usage method. A channel configuration method in a communication system using an orthogonal frequency division multiple access scheme includes the steps of: dividing an entire system time-frequency source into multi subband regions; allocating one subband region as an AMC(Adapted Modulation and Coding) data transmission region; allocating an other subband region as diversity data transmission region; selecting a subband region for data transmission; and transmitting data through the selected subband region.
Abstract:
본 발명은 직교 주파수 분할 다중 통신시스템에서 멀티캐스트 데이터를 N개의 부반송파들을 통해 K개의 사용자들에게 송신하기 위한 장치에 관한 것으로, 상기 K개의 사용자들로부터 피드백되는 채널정보들을 이용하여 상기 K개의 사용자들의 각각에 대해 수신 가능한 부반송파들을 결정하는 부반송파 할당 정보를 생성하는 부반송파 할당기와, 상기 K개의 사용자들로부터 피드백되는 채널정보들과 상기 부반송파 할당기로부터의 부반송파 할당 정보를 이용하여 상기 N개의 부반송파들의 각각에 할당되는 비트수를 결정하는 비트 할당 정보를 생성하는 비트 할당기와, 송신할 멀티캐스트 데이터를 상기 비트 할당기로부터의 비트 할당 정보에 따른 변조방식으로 변조하는 적응 변조기를 포함하는 것을 특징으로 한다. 이와 같은 본 발명은 스케일 능력이 있는 멀티캐스트 데이터를 전송하는 경우, 실시간 링크 파라미터 적응 변조를 수행함으로써 주파수 효율을 높일 수 있는 이점이 있다.
Abstract:
PURPOSE: A display module and a portable terminal including the same are provided to minimize a black matrix area of the portable terminal and to maximize a view area. CONSTITUTION: A display module (320) is formed of a view area (321) and a non-view area which does not be seen from outside. The non-view area is a liquid crystal display (LCD) drive integrated circuit (LDI) area. The display module is formed into rectangular panel shape and comprises multiple corners (323a,323b). A right and left outer corner formed on the upper side is located in the view area and a right and left outer corner formed on the lower side is located in the LDI area of the non-view area.
Abstract:
PURPOSE: A portable terminal with a mounting place for a microphone holder is provided to have a layout structure capable of improving utilization efficiency of an internal space. CONSTITUTION: A speaker module is provided at an upper portion within a housing of a terminal. A mounting plate (221) is installed at a side of the speaker module within the housing. A microphone holder (223) is fixed at a side of the mounting plate. At least one of a proximity sensor, an illuminance sensor, an ear jack, a camera module, a GPS module, and a gyro sensor is installed within the housing.
Abstract:
PURPOSE: A window for a camera distortion prevention of an electronic device is provided to always obtain image of an excellent quality although being formed as a curved shape. CONSTITUTION: A window for a camera distortion prevention of an electronic device comprises an upper side (11), a back side (12), and a slope side (15). The upper side comprises an imaging region, and is formed as a curved shape. The back side is faced with the upper side. The slope side is arranged in order to have an inclination corresponding to a curvature of the upper side in a part corresponding to at least the imaging region among the back side.
Abstract:
PURPOSE: A connecting terminal for a PCB(Printed Circuit Board) is provided to reduce the thickness of a portable terminal by reducing height between one surface of a PCB and an opponent component. CONSTITUTION: A terminal member(102) is arranged on an opening unit of a PCB(101). The terminal member includes a fixing unit(121) and a connecting terminal unit(123). The fixing unit is arranged in the circumference of the opening unit. The connecting terminal unit is located on the opening unit. A supporting unit(123a) adheres a connecting surface to an opponent component through an accumulated elastic force. The terminal member maintains a close connecting state with the opponent component.