Results 111 to 120 of about 3,446,761 (242)

Ergodic capacity comparison of optical wireless communications using adaptive transmissions

open access: yesOptics Express, 2013
Ergodic capacity is investigated for the optical wireless communications employing subcarrier intensity modulation with direct detection, and coherent systems with and without polarization multiplexing over the Gamma-Gamma turbulence channels. We consider three different adaptive transmission schemes: (i) variable-power, variable-rate adaptive ...
Md Zoheb, Hassan   +2 more
openaire   +2 more sources

On the Performance of Multihop Heterodyne FSO Systems With Pointing Errors

open access: yesIEEE Photonics Journal, 2015
This paper reports the end-to-end performance analysis of a multihop free-space optical system with amplify-and-forward (AF) channel-state-information (CSI)-assisted or fixed-gain relays using heterodyne detection over Gamma-Gamma turbulence fading with ...
Emna Zedini, Mohamed-Slim Alouini
doaj   +1 more source

Ergodic capacity analysis for DF strategies in cooperative FSO systems

open access: yesOptics Express, 2015
This paper focuses on the ergodic capacity analysis in the context of cooperative free-space optical (FSO) systems when the line of sight is available. Novel asymptotic closed-form expressions for the ergodic capacity corresponding to two different decode-and-forward (DF) strategies are obtained for a cooperative FSO communication system.
Rubén, Boluda-Ruiz   +3 more
openaire   +2 more sources

Ergodic Capacity of D2D Underlay Communication using MC-CDMA [PDF]

open access: yesRadioengineering, 2019
Device to device (D2D) communication that underlay conventional cellular networks can increase their spectrum utilization. However, since D2D users share the frequency band with cellular users, interference between these two network tiers can become a ...
J. Ahmed, S. Wyne
doaj  

Spatial Correlation and Ergodic Capacity of MIMO Channel in Reverberation Chamber

open access: yesInternational Journal of Antennas and Propagation, 2012
It has previously been shown that a reverberation chamber can conveniently be used to measure ergodic multiple-input multiple-output (MIMO) capacity for over-the-air (OTA) tests.
Xiaoming Chen
doaj   +1 more source

Secret Key Capacity for Ergodic Correlated Sources

open access: yesSecret Key Capacity for Ergodic Correlated Sources
identifier:oai:t2r2.star.titech.ac.jp ...
  +3 more sources

Performance of Decode-and-Forward Relaying in Mixed Beaulieu-Xie and $\mathcal{M}$ Dual-Hop Transmission Systems With Digital Coherent Detection

open access: yesIEEE Access, 2019
Performance analysis is presented for a decode-and-forward protocol based mixed radiofrequency (RF) and free-space optical (FSO) dual-hop transmission system with digital coherent detection.
Jiashun Hu   +4 more
doaj   +1 more source

Simple formulas for SIMO and MISO ergodic capacities

open access: yesElectronics Letters, 2011
Simple formulas for the SIMO and MISO ergodic capacities of independent Rayleigh fading channels with uniform power distribution are derived. These formulas are closed-form solutions of integrals if the special functions are included among the well-known functions.
openaire   +1 more source

Advances in Relay Networks: Performance and Capacity Analysis of Space-Time Analog Network Coding

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
We propose modified space-time-coding-based analog network coding (ANC) for multiple-relay network, termed space-time analog network coding (STANC). We present the performance and capacity analysis of the proposed network in terms of SER and ergodic ...
Adachi Fumiyuki   +3 more
doaj  

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