Abstract:
오늘날수많은사용자와제한된메모리공간때문에빅 데이터(big data)를위한메모리공간문제가중요한이슈로부상하고있다. 대규모 MIMO 시스템에서 Toeplitz 채널은전력효율문제뿐아니라성능개선에커다란역할을할 수있다. 본발명의실시예에서는행렬벡터화(vectorization)에기반한 Toeplitz 채널분해를제안하고, 이때대규모 MIMO 시스템을위한채널에 Toeplitz 행렬을사용하며, 또 Toeplitz Jackrt 행렬이푸리에고속변환(FFT)처럼 Cooley-Tukey sparse 행렬로분해됨을제시한다.
Abstract:
Fast Arikan polar binary BIJTs and Alamouti MIMO non-binary block-wise inverse transforms satisfy the relation [J]_N[J](_N^-1) = [I]_N. Binary BJTs of 2^k, 3^k, 5^k, and 6^k order are provided, and their binary block-wise inverse transforms are obtained by transposing binary block-wise transforms. One- and two-dimensional binary block-wise fast transforms are constructed in recursive forms. Kronecker products of successive lower order matrices and a binary block-wise basis matrix are used in recursive forms. Alamouti MIMO non-binary BJT is the Kronecker product of a lower order unit matrix and basis matrix [J]_2. As a result, the BIJTs in accordance to the present invention can be used in areas such as 3GPP mobile ultra-broadband permutation matrices, Reed-Muller code design, diagonal channels, MIMO 4G LTE Alamouti code, and pre-coding design. In addition, diagonal block-wise basis unit matrices are suitable for OFDM without inter-symbol interference (ISI), diagonal block zero-forcing pre-coding, and SVD in multi-user MIMO.
Abstract:
Provided are a method and device for signal processing using a circulant jacket matrix (CJM). According to an embodiment of the present invention, the signal processing method is to matrix-multiply an input signal by the modeled CJM for signal processing and to output the input signal after the signal processing. Thus, the method can improve signal processing speed and performance of mobile communications channel estimation, encryption, and discrete Fourier transform.
Abstract:
The present invention provides a communication method. According to the communication method, lattice coded data is transmitted through a communication channel to which a linear beam forming interference alignment technique is applied, thereby processing signal interference from other users in a wireless communication environment used by a plurality of users. [Reference numerals] (AA) Start; (BB) End; (S110) Specific node of three nodes applies a linear beamforming interference alignment technique to a communication channel; (S120) Specific node performs lattice coding of data; (S130) Specific node transmits the lattice coded data to another node of the three nodes through the communication channel
Abstract:
신호 변환 장치, 신호 변환 방법 및 기록매체가 제공된다. 본 신호 변환 장치는 DCT-II, DST-II, DFT, 및 HWT 중 어느 하나의 변환을 선택하여, 선택된 변환에 따라 입력된 신호를 변환하여 출력할 수 있게 되어, 낮은 복잡도의 구조를 가진 하이브리드 아키텍쳐를 가질 수 있게 된다.
Abstract:
릴레이 네트워크의 통신방법이 제공된다. 본 통신방법에 따르면, 소스 노드, 제1 릴레이 노드, 제2 릴레이 노드 및 목적지 노드를 포함하는 릴레이 네트워크의 통신방법을 제공할 수 있게 되어, 릴레이 네트워크는 높은 신뢰도를 가지고 높은 퍼포먼스를 가질 수 있게 된다.
Abstract:
송신기 및 수신기가 제공된다. 선형 블록 부호화를 이용하여 데이터를 부호화하는 송신기 및 연속 제거 복호를 이용하여 상기 수신된 신호를 복호화하는 수신기를 제공할 수 있게 되어, 송신기와 수신기는 이진 이산 무기억 대칭 채널 W에서 극부호를 효과적으로 구성할 수 있게 된다.
Abstract:
PURPOSE: A signal converting device with hybrid architecture, a signal converting method thereof, and a recording medium thereof are provided to convert and output an inputted signal according to selected conversion by selecting one of DCT-II(Discrete Cosine Transform-II), DST-II(Discrete Sine Transform-II), DFT(Discrete Fourier Transform), and HWT(Haar Wavelet Transform). CONSTITUTION: A signal converting device includes a switching unit(510) and a converting unit(520). The switching unit selects one of DCT-II, DST-II, DFT, and HWT. The converting unit converts and outputs an inputted signal according to the selection of the switching unit.