摘要:
An apparatus for transmitting a signal in a communication system includes: MT number of transmission antennas; a space-time encoder for generating MT number of transmission symbol streams by space-time encoding MT number of modulation symbol streams in accordance with a space-time encoding scheme determined by a predetermined control, and transmitting each of the MT transmission symbol streams through a corresponding transmission antenna from among the MT transmission antennas; and a controller for determining the space-time encoding scheme based on an iteration number of transmission, which indicates the number of times by which an information data bit stream corresponding to the MT modulation symbol streams has been transmitted.
摘要翻译:用于在通信系统中发送信号的装置包括:发送天线的数量; 空间编码器,用于根据确定的时空编码方案,通过调制符号流的空时编码M N T N个数来产生传输符号流的数目 通过预定的控制,并且从多个发送天线之间通过相应的发送天线发送每个M SUB传输符号流; 以及控制器,用于基于传送的迭代次数来确定空时编码方案,所述迭代次数表示已经发送了与调制符号流对应的信息数据比特流的次数 。
摘要:
A remote controller having a function for lighting up a dark place includes a hand generator and a condenser installed inside of a case and a rotating knob installed outside of the case thereby providing for making electricity by supplying the hand generator with a torque, the condenser being connected to the illuminating lamp and to a circuit substrate. The remote controller may be used semi-permanently without replacing a battery often unlike a conventional remote controller having a flash function, thereby greatly reducing use costs and greatly improving customer satisfaction and merchantability.
摘要:
A device for controlling connection of a built-in type ear-microphone for a portable radio terminal includes a vocoder, which has the speaker and microphone amplifier of the portable radio terminal and an ear-microphone amplifier; a first logic combination means for logically combining a signal output from the speaker amplifier and a signal output from the ear-microphone amplifier so as to prevent generation of noises due to short-circuit of a microphone signal and a speaker signal while an earphone plug is inserted in an earphone jack; a comparator for comparing an electric signal sensed at the earphone jack with a reference voltage; a second logic combination means for logically combining an output of the first logic combination means and an output of the comparator to generate a jack detection signal; and a central processing unit for generating a control signal for enabling the vocoder to switch an audio signal path to the ear-microphone amplifier, upon detection of the jack detection signal during a call.
摘要:
Disclosed is a method and apparatus for coding in a communication system. The coding method includes generating an information codeword vector from an information vector, generating a first vector in the information vector from an information part of a parity check matrix, generating a first parity codeword vector by performing an exclusive OR operation of the first vector and a second vector corresponding to a cyclically shifted version of the first vector, and generating a second parity codeword vector by performing an exclusive OR operation of the first vector, the first parity codeword vector, and a third vector. The third vector is a cyclically shifted version of a vector resulting from the exclusive OR operation of the first vector, the first parity codeword vector, and a fed-back third vector.
摘要:
A multi-input multi-output (MIMO) antenna for improving isolation is provided. Split ring resonators (SRRs) are structurally arranged on the lower end of a ground surface between a plurality of antenna patterns spaced apart from each other. Accordingly, permeability of the SRRs has a negative value, which prevents current from flowing between antennas. Consequently, the isolation characteristic of the antennas is improved.
摘要:
A transmission method based on a Hybrid Automatic Repeat Request (HARQ) scheme for in a communication system. A codeword is generated using a Low Density Parity Check (LDPC) code. Parity bits of the codeword are classified on a basis of a transmission priority. Parity bits with an identical transmission priority are grouped. An information bit group of the codeword and parity bit groups with the identical transmission priority are shuffled in a predefined pattern. A packet is generated from the shuffled information bit group and the shuffled parity bit groups based on the transmission priority. The generated packet is retransmitted in response to a retransmission request. The transmission method can obtain the effect of channel interleaving by setting a transmission priority according to importance of puncturing target blocks, shuffling blocks with the same priority, and shuffling and transmitting bits configuring each block.
摘要:
In a communication system, a signal transmission apparatus includes an encoder for encoding an information vector into a low density parity check (LDPC) codeword with an LDPC coding scheme, and a puncturer for puncturing the LDPC codeword according to a coding rate using a puncturing scheme. A signal reception apparatus includes a ‘0’ inserter for inserting ‘0’ symbols in a received signal according to a coding rate used in a signal transmission apparatus, and a decoder for decoding the ‘0’ symbol-inserted signal with a decoding scheme corresponding to a low density parity check (LDPC) coding scheme used in the signal transmission apparatus, thereby detecting an information vector.
摘要:
A flat panel display device includes a folded bezel formed in a multi-layer structure. The flat panel display device is formed so that an electronic component of a flexible printed circuit board may be inserted into at least one opening formed at a location where the layers of the bezel correspond to one another. Thus, the electronic component inserted into the opening of the bezel has improved durability against external interference and impact, and the number of components and the number of processes can be reduced.
摘要:
A method of reporting channel state information by a Mobile Station (MS) in a mobile communication system is disclosed. The method includes measuring a state of a downlink channel for the entire frequency band, determining a first Modulation and Coding Scheme (MCS) level corresponding to the measured channel state, and reporting the determined MCS level to a Base Station (BS).