Abstract:
A multi-user multi-antenna transmission apparatus based on a double codebook and a transmission method thereof are disclosed. The transmission apparatus according to the present invention comprises an effective channel information reception unit to receive an effective channel matrix for a transmission channel; a zero-forcing pre-coding unit to execute zero-forcing pre-coding which removes interference between the users based on the effective channel matrix by receiving data streams; a beam-forming unit to execute beam-forming by receiving the data streams in which the zero-forcing pre-coding is executed from the zero-forcing pre-coding unit; and a multi-antenna array to transmit the data streams in which the beam-forming is executed by the beam-forming unit to multiple users. When the method and the apparatus according to the present invention are used, the user can obtain effects to effectively process the interference between the terminals and to improve a transmission capacity in a multi-layer beam-forming environment.
Abstract:
Disclosed is a method for determining information on a relay and a filter of receivers. The relay is an operation method for determining information on a relay and a filter of receivers corresponding to the relay. The method comprises the steps of determining first relay and filter information based on first channel information between transmitters and the relay, second channel information between the receivers and the relay, and the first receiver filter information of the receivers; updating the first receiver filter information based on the first channel information, the second channel information, and the first relay and filter information; and determining second relay and filter information and second receiver filter information in order to converge the sum of an average square-law error rate of the entire of the receivers based on the first receiver filter information.
Abstract:
이동 통신 시스템의 간섭 정보 제공 방법이 개시된다. 기지국에서 수행되는 간섭 정보 제공 방법은, 피해 단말의 신호에 간섭을 주는 셀내 간섭 신호 정보를 획득하는 단계와, 셀내 간섭 신호 정보를 피해 단말에 전달하는 단계를 포함하되, 셀내 간섭 신호 정보를 전달하는 단계에서는 셀내 간섭 신호의 기준 신호 생성 관련 정보를 전달하거나, 셀내 간섭 신호의 주파수 자원 할당 정보 및 PMI(Precoding Matrix Indicator) 할당 정보를 전달한다. 따라서, 피해 단말은 수신한 간섭 정보에 기초하여 개선된 수신기를 구현할 수 있고, 이를 통해 간섭을 효율적으로 제거할 수 있다.
Abstract:
Disclosed is a method for designing a transceiver of a MIMO interference channel system. The method for designing a transceiver of a MIMO interference channel system includes a first step of acquiring receiver filter information and first channel information of a first receiver and second channel information of a second received by a transmitter; a second step of calculating MSE weight information and precoder information of the transmitter based on the acquired receiver filter information, the first channel information, and the second channel information; a third step of transferring the precoder information to the first receiver when an acquirable transmission rate to which a weight generated based on the MSE weight information and the precoder information is applied is not less than a preset reference value; and a step of repeating the first step to the third step until the acquirable transmission rate to which the weight is applied is less than the reference value, thereby improving transmission capacity.
Abstract:
PURPOSE: A direct connection communication between terminals and direct data transmitting/receiving method for a terminal relay are provided to perform the transmission and reception of data between terminals without passing through a base station. CONSTITUTION: A receiver changes a receiving frequency into an uplink frequency(S220). A transmitter changes a transmitting frequency to a downlink frequency. The receiver receives data from the other terminal(S230). The transmitter transmits data to the other terminal. The receiver re-changes the receiving frequency into the downlink frequency(S240).