Results 31 to 40 of about 652,829 (286)
Rate maximization in multi-antenna broadcast channels with linear preprocessing [PDF]
, 2006 The sum rate capacity of the multi-antenna broadcast channel has recently been computed. However, the search for efficient practical schemes that achieve it is still ongoing. In this paper, we focus on schemes with linear preprocessing of the transmitted
Hassibi, Babak +2 more
core +1 more source
Iterative joint design of source codes and multiresolution channel codes [PDF]
, 1997 We propose an iterative design algorithm for jointly optimizing source and channel codes. The joint design combines channel-optimized vector quantization (COVQ) for the source code with rate-compatible punctured convolutional (RCPC) coding for the ...
Effros, Michelle, Goldsmith, Andrea
core +1 more source
Closed Form Solution for Outage and Average Bit Error Rate of Asymmetric Relaying System
International Journal of Innovative Technology and Exploring Engineering, 2019 In this paper, closed form solution of outage and bit error rate (BER) is evaluated for the purpose of performance analysis of the amplify and forward relaying scheme under the asymmetric fading environment. In this dual hop system, we have used Rayleigh fading along source S to relay R and Mixture Gamma fading along relay R to destination D. First, we
Brijesh Kumar Singh, Mainak Mukhopadhyay
openaire +1 more source
Performance analysis of UAV-based mixed underwater PLC-RF systems
Digital Communications and NetworksIn this study, we analyzed the performance of an Unmanned Aerial Vehicle (UAV)-based mixed Underwater Power Line Communication-Radio Frequency (UPLC-RF) network.
Shenghai Chen, Liang Yang, Xianfu Lei
doaj +1 more source
Algorithm and Architecture for Path Metric Aided Bit-Flipping Decoding of Polar Codes
, 2019 Polar codes attract more and more attention of researchers in recent years, since its capacity achieving property. However, their error-correction performance under successive cancellation (SC) decoding is inferior to other modern channel codes at short ...
Chen, Lirui +4 more
core +1 more source
Approximate minimum BER power allocation for MIMO-THP system [PDF]
, 2008 This paper proposes a transmit power allocation (TPA) scheme based on multiple-input multiple-output (MIMO) Tomlinson-Harashima precoding (THP) structure, where a TPA matrix is introduced to the conventional MIMO-THP.
Gong, Ping +4 more
core +1 more source
Per-antenna power constrained MIMO transceivers optimized for BER [PDF]
, 2009 This paper considers the linear transceiver optimization problem for multi-carrier multiple-input multiple-output (MIMO) channels with per-antenna power constraints.
Vaidyanathan, P. P., Weng, Ching-Chih
core +2 more sources
Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma
Molecular Oncology, EarlyView.The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic +5 more
wiley +1 more source
Image Compression Scheme Using Improved Basic-LAVQ and Optimized VLC
Journal of King Saud University: Engineering Sciences, 1996 In this paper, a predictive locally adaptive vector quantization (PLAVQ) for real-time image compression is developed and simulated. It is a hybrid of improved predictor, LAVQ and (VLC). The latter is a combination of Laplacian quantizer, Huffman coding,
Awad Kh. Al-Asmari +2 more
doaj +1 more source
Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage [PDF]
, 2017 Because of the short battery life of user equipments (UEs), and the requirements for better quality of service have been more demanding, energy efficiency (EE) has emerged to be important in device-to-device (D2D) communications.
Nguyen, Hoang-Sy +2 more
core +2 more sources