Results 191 to 200 of about 3,446,761 (242)
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Achieving the ergodic capacity with lattice codes
2015 IEEE International Symposium on Information Theory (ISIT), 2015The performance of lattice codes in the additive white Gaussian noise (AWGN) channel has attracted much attention lately, however, their performance under ergodic fading channels has been relatively unexplored. We show that lattice coding and decoding achieve the capacity of the ergodic point-to-point and multiple-access channels (MAC). Additionally, a
Ahmed Hindy, Aria Nosratinia
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Ergodic capacity optimization in coexisting DVB-LTE-like systems
2014 6th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2014In this paper, the ergodic capacity maximization problem in case of coexistence between digital video broadcasting (DVB) and long term evolution (LTE) systems is studied. A full interference scenario, i.e. where the DVB and LTE systems spectrally overlap, is assumed. The objective function, defined as the summation of the LTE and DVB system capacities,
Bawab, Hiba +4 more
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Ergodic Outage and Capacity of Terahertz Systems Under Micromobility and Blockage Impairments
IEEE Transactions on Wireless Communications, 2021Terahertz (THz) communications systems are expected to become a major enabling technology at the air interface in sixth-generation (6G) cellular systems.
D. Moltchanov +5 more
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On Capacity of Ergodic Multiple-Input Multiple-Output Channels
2005 Australian Communications Theory Workshop, 2006Capacity results for Gaussian matrix channels are investigated where the receiver has knowledge of the channel realization and the transmitter has knowledge only of the channel statistics. We extend beamforming results and examine arbitrary ergodic random vector channels, under the condition that the transmit covariance is independent of the ...
L. Hanlen, A. Grant
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Ergodic capacity region for the uplink OFDMA network
2012 International Conference on Wireless Communications and Signal Processing (WCSP), 2012In this paper, the resource allocation policy and algorithm for the uplink Orthogonal Frequency Division Multiple Access (OFDMA) network over the fading channel is studied. With the convex optimization theory, the optimal resource allocation is formulated as a weighted ergodic sum rate maximization problem.
Zelang Wang, Huifang Chen, Lei Xie
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On the Ergodic Capacity of mmWave Systems Under Finite-Dimensional Channels
IEEE Transactions on Wireless Communications, 2019Due to the underlying sparse structure of the mmWave channels, which indeed makes the exact closed-form capacity expressions inherently hard to derive, there has been less research on the ergodic capacity of mmWave systems.
Xi Yang, Xiao Li, Shengli Zhang, Shi Jin
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On the Ergodic Capacity of Ground-To-UAV Free-Space Optical Communications
2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC), 2019Recently, free-space optical (FSO)communications have gained an increased popularity for data transfer between unmanned aerial vehicles (UAVs). Despite providing large unlicensed bandwidth, the channel capacity of UAV-based FSO links is negatively ...
M. Dabiri +2 more
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Uplink ergodic capacity of a cognitive radio network
2011 International Conference on Communications, Computing and Control Applications (CCCA), 2011In this paper, we study the transmission performances of a cognitive radio (CR) system which coexists with a primary system. We focus at first, on the power control of the CR network. We define then, the maximum allowable power for a cognitive transmitter whose modelisation is related to a flat reflecting surface.
Mariem Mhiri +2 more
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Simple and Accurate Low SNR Ergodic Capacity Approximations
IEEE Communications Letters, 2018Some of the existing ergodic capacity approximations for the low signal-to-noise ratio (SNR) region may lack accuracy. To overcome this, we derive two simple yet accurate Pade approximations for the low-SNR ergodic capacity. These approximations utilize the channel moments, which need not be updated for each distinct SNR value.
Bitan Banerjee +3 more
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Ergodic capacity of frequency selective MIMO burst channels
The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003, 2004Current commercial wireless systems use fixed burst structures for data transmission. In this paper, the ergodic Shannon capacity of some time-varying frequency selective channels with fixed burst structured transmission is derived. Multiple antennas in the transmitter and/or in the receiver are assumed.
O. Piirainen, M. Juntti
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