Abstract:
A method and an apparatus for dividing a receiving symbol signal modulated into a bit reflected gray code to bit information are provided to simplify the complexity of the division of the bit information inputted to an iterative decoder. A bit information dividing device includes a positive integer converting unit(130), a code determining unit(140) and an operation unit(150). The positive integer converting unit calculates the positive integer for the receiving symbol signal. The code determining unit determines the code of the receiving symbol signal. The operation unit converts the receiving symbol signal into the bit information by using the value of the receiving symbol signal, and the arrangement value of the bits and a coordinate axis movement value of the bit group.
Abstract:
A method for detecting signals and an apparatus for receiving the signals in an MIMO system are provided to approach performance closely adjacent to an ML(Maximum Likelihood) scheme without performing the exhaustive full search of the ML scheme, and facilitate the realization of hardware by significantly reducing complexity. A layer align unit(210) realigns a channel estimated layer for receiving signals on the basis of an SNR(Signal to Noise Ratio). A symbol detecting unit(220) sets a candidate group by a stage according to the number of configured transceiving antennas(140,260) of the MIMO system on the basis of the layer realigned by the layer align unit. The layer align unit realigns the received signals in order from a layer with a high SNR to a layer with a low SNR.
Abstract:
본 발명의 일 실시예에 따른 기지국은 복수의 원격 라디오 헤드(RRH)들과 협력 통신하는 기지국에 있어서, 상기 복수의 원격 라디오 헤드들로부터 소스 신호들을 수신하는 통신부, 상기 소스 신호들 각각의 신호 세기 및 지연 시간을 측정하는 측정부, 상기 신호 세기 및 지연 시간을 기초로 상기 복수의 원격 라디오 헤드들 가운데 협력 통신을 수행할 원격 라디오 헤드들을 선택하는 선택부, 및 상기 선택된 원격 라디오 헤드들로부터 수신된 소스 신호를 복조하는 복조부를 포함한다.
Abstract:
본 발명의 일 실시예에 따른 통신 시스템은 이중 편파 안테나를 통해 서로 통신하는 제 1 통신 장치 및 제 2 통신 장치를 포함하는 통신 시스템에 있어서, 제 1 편파에 대한 제 1 채널 이득 및 제 2 편파에 대한 제 2 채널 이득의 비율로 정의되는 공동 편파 비율을 산출하는 제 1 통신 장치, 및 상기 제 1 통신 장치로부터 전달되는 상기 공동 편파 비율을 이용하여 상기 제 1 편파에 대한 제 1 회전각 및 상기 제 2 편파에 대한 제 2 회전각을 각각 산출하고, 상기 제 1 편파를 상기 제 1 회전각만큼 회전하여 생성되는 제 1 회전편파 및 상기 제 2 편파를 상기 제 2 회전각만큼 회전하여 생성되는 제 2 회전편파를 상기 제 1 통신 장치로 송신하는 제 2 통신 장치를 포함한다.
Abstract:
The present invention relates to an apparatus for generating the ranging signal of a wireless communication system and a method for generating the ranging signal of a wireless terminal. A ranging signal is generated by using one IFFT engine regardless of the mode of a ranging signal transmitted to an uplink in a wireless communication system where the frequency interval of a subcarrier used for generating an initial ranging signal is different from the frequency interval of a subcarrier used for periodic ranging, thereby reducing the complexity of the design and the hardware of a wireless terminal and reducing power consumption by the simplification of the hardware of the wireless terminal.
Abstract:
PURPOSE: A wireless base station and a data processing method thereof are provided to execute a physical layer function of a baseband modem in an RRU(Remote Radio frequency Unit) installed at a remote site. CONSTITUTION: A group digital processing unit(100) includes a plurality of DU(Digital Unit)s. A plurality of RRUs(210,220) is connected with the group digital processing unit through a transmission network. A plurality of the RRUs is individually installed in each service target area. A plurality of the DUs includes a MAC(Medium Access Control) function unit which executes each transmission and reception MAC function. A plurality of the RRUs includes an encoder which encodes downlink data from each of the DUs. [Reference numerals] (130) Switching unit
Abstract:
PURPOSE: An MMSE(Minimum Mean Squire Error) based signal detection method in a multiple-input multiple-output system and method thereof are provided to calculate MMSE based R-LLR(Reciprocal Log Likelihood Ratio). CONSTITUTION: A channel estimation unit(100) estimates a channel based on a reception signal. An MMSE based R-LLR calculation unit(200) connects to the channel estimation unit. The MMSE based R-LLR calculation unit calculates R-LLR based on the received signal and the estimated channel. A channel decoder(300) connects to the MMSE based R-LLR. The channel decoder decodes the channel and the reception signal based on the calculated R-LLR. [Reference numerals] (100) Channel estimation unit; (200) MMSE based R-LLR calculation unit; (300) Channel decoder