Results 31 to 40 of about 121,538 (312)

Robust MMSE Precoding Strategy for Multiuser MIMO Relay Systems with Switched Relaying and Side Information [PDF]

, 2013
In this work, we propose a minimum mean squared error (MMSE) robust base station (BS) precoding strategy based on switched relaying (SR) processing and limited transmission of side information for interference suppression in the downlink of multiuser ...
Cai, Yunlong, Lamare, Rodrigo C. de, Yang, Lie-Liang, Zhao, Minjian   +3 more
core   +1 more source

PCA-Based Fast Search Method Using PCA-LBG-Based VQ Codebook for Codebook Search

IEEE Access, 2016
A fast search method based on principle component analysis (PCA) is proposed to search codewords using vector quantization (VQ) codebooks obtained by PCA with Linde-Buzo-Gray (LBG) algorithms.
Po-Yuan Yang, Jinn-Tsong Tsai, Jyh-Horng Chou   +2 more
doaj   +1 more source

Positioning Information-Based Codebook for Reconfigurable Intelligent Surface Passive Beamforming

IEEE Open Journal of the Communications Society, 2023
In this paper, we design a positioning information (PI) based codebook (PI-CB) for reconfigurable intelligent surface (RIS) passive beamforming (PBF), in online stage.
Ahmed M. Nor, Octavian Fratu, Simona Halunga   +2 more
doaj   +1 more source

Codebook

A codebook of qualitative codes, their definitions, and associated categories.
  +7 more sources

Fast Linde–Buzo–Gray (FLBG) Algorithm for Image Compression through Rescaling Using Bilinear Interpolation

Journal of Imaging
Vector quantization (VQ) is a block coding method that is famous for its high compression ratio and simple encoder and decoder implementation. Linde–Buzo–Gray (LBG) is a renowned technique for VQ that uses a clustering-based approach for finding the ...
Muhammmad Bilal, Zahid Ullah, Omer Mujahid, Tama Fouzder   +3 more
doaj   +1 more source

An Efficient Codebook Initialization Approach for LBG Algorithm

, 2011
In VQ based image compression technique has three major steps namely (i) Codebook Design, (ii) VQ Encoding Process and (iii) VQ Decoding Process. The performance of VQ based image compression technique depends upon the constructed codebook. A widely used
Pal, Arup Kumar, Sar, Anup
core   +1 more source

Constructive spherical codes on layers of flat tori [PDF]

, 2012
A new class of spherical codes is constructed by selecting a finite subset of flat tori from a foliation of the unit sphere S^{2L-1} of R^{2L} and designing a structured codebook on each torus layer.
Costa, Sueli I. R., Torezzan, Cristiano, Vaishampayan, Vinay A.   +2 more
core   +1 more source

Codebook

, 2022
Codebook for affordances and constraints that three elementary school teachers found when using the teacher-to-teacher-online-marketplace-of-ideas. The codebook contains information on deductive coding that occured, the round of inductive coding, and axial codes that we devleoped.
openaire   +1 more source

A class of nearly optimal codebooks and their applications in strongly regular Cayley graphs

AIMS Mathematics
Codebooks with small inner-product correlations are desirable in many fields, including compressed sensing, direct spread code division multiple access (CDMA) systems, and space-time codes.
Qiuyan Wang, Weixin Liu, Jianming Wang, Yang Yan   +3 more
doaj   +1 more source

Codebook metrics evaluation for millimeter wave communications by antenna array response and signal to noise ratio

ITM Web of Conferences, 2018
Codebook design is a key point in beam-forming which is necessary for millimeter Wave (mmWave) communications to compensate its huge path loss. In our study, we demonstrate the benefits of the number of antenna elements for beamforming; we focus on the ...
Abdo Adam Mohamed Ahmed, Zhao Xiongwen, Zhang Rui, Zhang Yu   +3 more
doaj   +1 more source