Results 21 to 30 of about 4,625,198 (299)
Area spectral efficiency of a channel adaptive cellular mobile radio system in a correlated shadowed environment [PDF]
, 1998 In this paper, the average area spectral efficiency (ASE) in bits/sec/Hz/Km2 of a variable transmission rate, high capacity cellular communication system is studied in a correlated shadowed environment.
Nix, AR +5 more
core +1 more source
Enhancement of Spectral Efficiency FSO Links Using Linear Polarizer-Based MLPolSK Detection
IEEE Access, 2020 This paper proposes the enhancement of spectral efficiency (SE) by linear polarizer based multilevel linear polarization shift keying (MLPolSK) detection in free-space optical (FSO) communication.
Yan-Qing Hong +2 more
doaj +1 more source
Spectrally-Efficient Continuous Phase Modulations [PDF]
2008 IEEE International Symposium on Information Theory, 2008 We investigate the spectral efficiency of continuous phase modulations (CPMs). To this end, we need an effective bandwidth definition for a CPM signal, whose power spectral density has in principle an infinite support. The definition we adopt is based on the spacing between adjacent carriers in a frequency division multiplexed CPM system.
Alan BARBIERI +2 more
openaire +5 more sources
Spectral efficiency of spectrum-pooling systems [PDF]
IET Communications, 2008 In this contribution, we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband system in which the primary and cognitive users wish to communicate to different receivers, subject to mutual interference and assume that each user knows only his channel and ...
Majed Haddad +2 more
openaire +3 more sources
, 2020 The concentration of MgO is one of the most important parameters in the phosphate ore flotation. The fast detection of the concentration of MgO has great significance for the optimization of the flotation, the improvement of the efficiency and the ...
Sun Lan-xiang +4 more
core +1 more source
IEEE Access, 2018 In this paper, we investigate the resource allocation problem for achieving spectral efficiency (SE) and energy efficiency (EE) tradeoff with users' minimum rate requirements in hybrid multi-carrier non-orthogonal multiple access (MC-NOMA) systems which ...
Zhengyu Song, Qiang Ni, Xin Sun
doaj +1 more source
SCMA Spectral and Energy Efficiency With QoS [PDF]
IEEE Access, 2021 Sparse code multiple access (SCMA) is one of the promising candidates for new radio access interface. The new generation communication system is expected to support massive user access with high capacity. However, there are numerous problems and barriers to achieve optimal performance, e.g., the multiuser interference and high power consumption.
S. Jaber, W. Chen, K. Wang
openaire +2 more sources
Flexible resource allocation for joint optimization of energy and spectral efficiency in OFDMA multi-cell networks [PDF]
, 2015 The radio resource allocation problem is studied, aiming to jointly optimize the energy efficiency (EE) and spectral efficiency (SE) of downlink OFDMA multi-cell networks.
Jing, Wenpeng +4 more
core +1 more source
IEEE Access, 2019 To fully utilize the system resources and enhance the user experience, two types of offloading mechanisms are designed for massive MIMO (multiple-input-multiple-out) enabled heterogeneous cellular networks (HCNs).
Tianqing Zhou +6 more
doaj +1 more source
IEEE Access, 2022 The fast growing Internet of Vessels (IoV) requires maritime communications to be more spectral efficient to make full use of the scarce maritime spectral resource, provide a high data transmission rate and support massive communication nodes to access ...
Xinyu Dou +3 more
doaj +1 more source