OFDM反应特征矩阵的逆In orthogonal frequency division multiplexing( OFDM)/offset quadrature amplitude modulation( OQAM)systems,the relationship between the input of the synthesis filter bank( SFB) and the output of the analysis filter bank( AFB) is much more complicated than OFDM due to its special...
Assuming channels with integer delay and Doppler taps only, OTFS using Vt=FN† provides the sparsest representation of the channel. However, when a channel has fractional Doppler shifts, such a representation may not be as sparse. Instead, the use of WHT in OTSM leads to a similar sparsity...
The number of features needed for effective data representation can thus be reduced. This technique can be used for novelty detection by constructing a model of the distribution of training data in the transformed space [257, ch. 10]. The first few principal components of a dataset correspond ...
Wedescribeheretheextensionofthedensitymatrixrenormalizationgroupalgorithmto thecasewheretheHamiltonianhasanon-Abelianglobalsymmetrygroup.Theblockstates transformasirreduciblerepresentationsofthenon-Abeliangroup.Sincetherepresentationsare multi-dimensional,asingleblockstateinthenewrepresentationcorrespondstomultiplestates oftheor...
In these cases, the estimated sparse representation can be viewed as prior information on the subsequent frame. Therefore, it is possible to obtain prior information for the projection matrix design problem. With given prior information, the objective of projection matrix design is to make the ...
The DFT is a Fourier representation of a given sequence {x(n)}, that is,X(n)=∑m=0N−1x(m)Wnm,0≤n≤N−1where W=e−j2π/N. The N-point DFT matrix can be denoted by FN≜{Wnm}. The N×N Sylvester Hadamard matrix is denoted by HN. The Sylvester Hadamard matrix is ...
Novel matrix representation for OFDM/OQAM systemsLi ZhongnianDepartment of Electronics and Information EngineeringLiu ShouyinDepartment of Electronics and Information Engineering中国邮电高校学报(英文版)
MIMO-OFDM receivercomplex matrix elementThis work presents the architecture of an optimized complex matrix inversion using GAUSS-JORDAN elimination (GJ-elimination) on FPGA with single precision floating-point representation to be used in MIMO-OFDM receiver. This module consists of single precision ...
11.The method of claim 1 wherein:said adjacent tone is on a first side of said strongest tone in the frequency domain representation of the signal;the selected set comprises another adjacent tone on a second side of the strongest tone;the vector Z is a complex vector of size 1×n, where...
As shown in equation (10), inherent in the iterative process to derive {circumflex over (V)} is a representation of {circumflex over (V)} as a product of transformation matrices. Each transformation matrix Ti may be formed based on a simple 2×2 unitary matrix Vpq. Each 2×2 unitary ...