Results 271 to 280 of about 121,464 (311)

Physical Layer Security of NOMA with Decode-and-Forward Relaying in Underlay CR Network

International Conference on Wireless Communications and Signal Processing, 2020
This paper investigates the physical layer security of non-orthogonal multiple access (NOMA) with decode-and-forward (DF) relays in underlay cognitive radio (CR) network.
Mengyao Zhu, Zhen Yang, Youhong Feng
semanticscholar   +1 more source

Multiple-access decode-and-forward relaying with iterative detection and decoding

2010 3rd IEEE International Conference on Broadband Network and Multimedia Technology (IC-BNMT), 2010
In this paper, we propose a novel protocol for cooperative diversity based on decode-and-forward (DF) with iterative detection and decoding (IDD) receiver. Closed-form expression of outage probability is derived under quasi-static fading channels. Numerical results show that the proposed scheme achieves higher diversity order than traditional DF scheme
null Ang Yang, null Zesong Fei, null Meng Zheng, null Jingming Kuang   +3 more
openaire   +1 more source

State Estimation for Nonlinear Complex Dynamical Networks With Random Coupling Strengths: A Decode-and-Forward Relay-Based Strategy

IEEE Transactions on Systems, Man, and Cybernetics: Systems
This article is concerned with the finite-horizon $H_{\infty }$ state estimation problem for a specific class of nonlinear complex dynamical networks (CDNs) which are subject to random couplings and packet dropouts.
Xueyang Meng, Zidong Wang, Fan Wang, Yun Chen   +3 more
semanticscholar   +1 more source

Optimum Decoding of Full Decode and Forward Scheme over Cooperative Relay Channels

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
Optimum decoding of the cooperative full decode and forward (DF) scheme is derived. It is shown that optimum decoding requires marginalization of a so called partially observed likelihood function over all relay decoder outcomes. Bhattacharyya bound on relay decoding error is used to fully factorize the partially observed likelihood function.
Hoshyar R., Tafazolli R.
openaire   +1 more source

Ressource management for Amplify and Forward and Decode and Forward relaying systems

2010 XIth International Workshop on Symbolic and Numerical Methods, Modeling and Applications to Circuit Design (SM2ACD), 2010
This paper addresses the optimization of ressource allocation based on Decode and Forward (DF) or Amplify and Forward (AF) relaying techniques for packet access Orthogonal Frequency Division Multiple Access (OFDMA) networks. A power allocation quasi-optimal solution with a low complexity has been proposed for the two forwarding techniques.
Wafa Ben Hassen, Afef El Gares, Noureddine Hamdi   +2 more
openaire   +1 more source

A decoding procedure for compress-and-forward and quantize-and-forward relaying

2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012
In this paper, a decoding procedure is developed for both the compress-and-forward (CF) and the short message quantize-and-forward (QF-SM) relaying schemes. This procedure is based on exploiting a common feature of the mapping used by both schemes to determine the relay output from the estimate of its input.
Kevin Luo, Ramy H. Gohary, Halim Yanikomeroglu   +2 more
openaire   +1 more source

Adaptive Virtual Relaying MIMO Decode and Forward

2009 International Conference on Wireless Communications & Signal Processing, 2009
Multi-antenna wireless communication systems exploit channel diversity otherwise not available in Single Input Single Output (SISO) channels. Implementation of wireless Multiple-Input Multiple-Output (MIMO) systems is problematic due to the large sized operational wavelengths over the small dimensionality of the mobile devices.
Triant Kanakis, Charan Litchfield, Predrag Rapajic   +2 more
openaire   +1 more source

A New Incomplete Decode-and-Forward Protocol

2008 IEEE Wireless Communications and Networking Conference, 2008
In this work, we explore the introduction of distributed space-time codes in decode-and-forward (DF) protocols. We propose a new Incomplete DF protocol, based on a partial decoding at the relays. This strategy allows the new protocol to bring both full diversity and full symbol rate.
Charlotte Hucher, Ghaya Rekaya-Ben Othman, Ahmed Saadani   +2 more
openaire   +1 more source

Decode-and-forward strategies for bidirectional relaying

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
We consider a three-node network, where a relay node establishes a bidirectional communication between two nodes using a two-phase decode-and-forward protocol. In the first phase the two nodes transmit their messages to the relay node which decodes them.
Rafael F. Wyrembelski, Tobias J. Oechtering, Holger Boche   +2 more
openaire   +1 more source

Improved Iterative Decoders for Turbo-Coded Decode-and-Forward Relay Channels

2012 IEEE Vehicular Technology Conference (VTC Fall), 2012
An Improved Maximum A Posteriori (IMAP) decoder for turbo-coded decode-and-forward (DF) relay channels which takes into account the decoding errors at the relay is analyzed. This decoder is implemented in an iterative manner similar to the traditional iterative decoder (TID) used for turbo codes.
Khoa Quang Huynh, Tor Aulin
openaire   +1 more source