Results 31 to 40 of about 15,151 (141)
Distributed space-time coding for two-way wireless relay networks [PDF]
, 2009 In this paper, we consider distributed space-time coding for two-way wireless relay networks, where communication between two terminals is assisted by relay nodes. Relaying protocols using two, three, and four time slots are proposed. The protocols using
Cui, Tao +3 more
core +1 more source
The Reliability Research of DF-D2D Underlaying Cellular Networks
Advances in Electrical and Computer Engineering, 2014 In this paper, we propose a novel Device-to-Device (D2D) communication model, i.e., DF-D2D where the D2D communication is aided by a relay using the decode-and-forward (DF) strategy.
HUAN, C., LIU, C.
doaj +1 more source
Performance Comparison between Adaptive and Fixed Transmit Power in Underlay Cognitive Radio Networks [PDF]
, 2013 In this paper, we compare the performance in terms of symbol error probability, data rate and power consumption of the use of fixed transmit power (FTP) and adaptive transmit power (ATP) in underlay cognitive radio networks. The use of FTP alleviates the
Ajib, Wessam +2 more
core +1 more source
IEEE AccessThis paper introduces the cooperative quadrature spatial modulation (CQSM) system with hybrid decode-amplify-forward (HDAF) relaying protocol. Compered with the traditional CQSM system which only uses amplify-and-forward (AF) protocol and decode-and ...
Xiangyan Bu, Ke Pang
doaj +1 more source
Capacity Bounds and Mapping Design for Binary Symmetric Relay Channels
Entropy, 2012 Capacity bounds for a three-node binary symmetric relay channel with orthogonal components at the destination are studied. The cut-set upper bound and the rates achievable using decode-and-forward (DF), partial DF and compress-and-forward (CF) relaying ...
Majid Nasiri Khormuji, Mikael Skoglund
doaj +1 more source
Advancing Energy Materials by In Situ Atomic Scale Methods
Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss +21 more
wiley +1 more source
Performance Analysis of Decode-and-Forward Relaying in Gamma-Gamma Fading Channels
, 2012 Decode-and-forward (DF) cooperative communication based on free space optical (FSO) links is studied in this letter. We analyze performance of the DF protocol in the FSO links following the Gamma-Gamma distribution.
Bhatnagar, Manav R.
core +1 more source
Energy Efficiency Analysis in Amplify-and-Forward and Decode-and-Forward Cooperative Networks [PDF]
, 2010 In this paper, we have studied the energy efficiency of cooperative networks operating in either the fixed Amplifyand- Forward (AF) or the selective Decode-and-Forward (DF) mode.
Chen, Qing, Gursoy, Mustafa Cenk
core +1 more source
Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions
Canadian Journal of Statistics, EarlyView.Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni +2 more
wiley +1 more source
IEEE Photonics Journal, 2016 The ergodic capacity of decode-and-forward (DF) relay-assisted free-space optical (FSO) communication systems when line of sight is available is analyzed over gamma–gamma fading channels with pointing errors.
Ruben Boluda-Ruiz +3 more
doaj +1 more source