Results 241 to 250 of about 1,605,056 (288)

Achievable Diversity Gain of Interference Channel

2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013
The optimal DMT (diversity and multiplexing tradeoff) of interference channel is still unknown. In this paper, we investigate the maximum diversity gain of interference channel and try to answer two questions. Firstly, it is known that no two links can achieve their maximum DoF (degree of freedom) simultaneously in an interference channel. The question
S.H. Song, J. Zhong, K. B. Letaief
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We gain more strength from diversity

Early Years Educator, 2017
MA Education Ltd, St Jude's Church, Dulwich Road, London, SE24 0PB neil.henty@markallengroup.com
Deborah Lawson, Name withheld, Debbie Howard   +2 more
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Time and site diversity gain: A close relationship

2009 International Workshop on Satellite and Space Communications, 2009
Site and time diversity are countermeasures used in satellite links to mitigate outage due to rain attenuation; in this paper these techniques will be compared through radar simulation, and the close mutual relationship highlighted.
CAPSONI, CARLO, D'AMICO, MICHELE, NEBULONI, ROBERTO CARLO   +2 more
openaire   +3 more sources

How to Exploit Diversity for Scientific Gain

Current Directions in Psychological Science, 2008
People often show considerable systematic variability in their ability to perform many different cognitive tasks. In this article, we argue that by combining an individual-differences approach with an experimental-cognitive-neuroscience approach one can often further constrain potential theories of the underlying cognitive mechanisms.
Edward K. Vogel, Edward Awh
openaire   +1 more source

Gain Control for Diversity Receivers

Bell System Technical Journal, 1968
Previous work on optimum gain control is extended to an important class of diversity receivers used for digital data transmission through fading media and for radar. As in the single diversity case the optimum gain (which yields minimum average cost of receiver saturation) is extremely insensitive to relative costs of saturation at the upper and lower ...
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Multiuser Diversity Gain in Uplink NOMA

2018 IEEE 88th Vehicular Technology Conference (VTC-Fall), 2018
Non-orthogonal multiple access (NOMA) that exploits the differences of transmission powers of users or power domain NOMA is an attractive technology to meet the increasing demands of 5G network users. In this paper, a multiuser diversity gain analysis for power domain NOMA is introduced to compare the reliability of various power transmission methods ...
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Network coding gain of cooperative diversity

IEEE MILCOM 2004. Military Communications Conference, 2004., 2005
Cooperative diversity allows a collection of radio terminals that relay signals for each other to emulate an antenna array and exploit spatial diversity in wireless fading channels. Analysis of performance in terms of information-theoretic outage probability leads to two key parameters for these systems, namely, network diversity order and network ...
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Frequency diversity gain in indoor GSM systems

Proceedings of Vehicular Technology Conference - VTC, 2002
Wideband frequency hopping is one of the key properties of the GSM air interface. Frequency hopping introduces diversity on the transmission link, which improves the receiver performance. However, in indoor GSM systems, less frequency diversity gain is expected due to the characteristics of the indoor radio channel.
M. Hook, C. Johansson, H. Olofsson
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Diversity gains in two-ray fading channels

IEEE Transactions on Wireless Communications, 2009
A two-ray, small-scale fading model was recently proposed as a worst-case fading scenario for certain wireless sensor applications. Empirical data motivated this development for fading was found to be more severe than predicted by Rayleigh fading statistics, a behavior referred to as hyper-Rayleigh fading.
Lu'ay Bakir, Jeff Frolik
openaire   +1 more source

Gain of spatial diversity with conjoint signals

2017 IEEE AFRICON, 2017
This paper proposes a novel method of achieving conjoint coding gain without additional signal measurement requirements. In the proposed scheme, received signals in a spatial diversity system are used to synthesize additional conjoint signals within the neighbourhood of receive antennas. These excess signals are assumed to be from virtual antennas.
Peter O. Akuon, Hongjun Xu
openaire   +1 more source