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2018 IEEE Global Communications Conference (GLOBECOM), 2018
The performance of multi-cell massive multiple- input multiple-output (MIMO) downlink (DL) with nonorthogonal multiple access (NOMA) is investigated. A novel pilot assignment for NOMA users is proposed to mitigate intra-cluster pilot contamination and to alleviate the detrimental impact of inter-cluster in the useful operating regime.
Dhanushka Kudathanthirige +1 more
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The performance of multi-cell massive multiple- input multiple-output (MIMO) downlink (DL) with nonorthogonal multiple access (NOMA) is investigated. A novel pilot assignment for NOMA users is proposed to mitigate intra-cluster pilot contamination and to alleviate the detrimental impact of inter-cluster in the useful operating regime.
Dhanushka Kudathanthirige +1 more
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WCDMA downlink capacity estimation
VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2002A simple estimation for the WCDMA downlink capacity is presented. A general approximation is derived from the basic CDMA theory, and is then adapted to the scenario in question with the help of results from a number of reference system simulations. Comparison with the simulations shows that the obtained approximation is valid for a variety of system ...
K. Hiltunen, R. de Bernardi
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CDMA-SFBC Downlink Performance
International Journal of Wireless Information Networks, 2009In this paper a generic code division multiple access (CDMA)-space frequency block coded (SFBC) system for downlink transmission is proposed. Closed form expressions for the bit error rate (BER) performance of the proposed CDMA-SFBC downlink system are derived and numerically evaluated considering different scenarios.
Taimour Aldalgamouni, Ahmed Elhakeem
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Distributed Massive MIMO Downlink
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019The feasibility of adopting distributed massive multiple-input multiple-output (D-MMIMO) for mitigating the achievable rate loss incurred by spatially-correlated fading at space-constrained user antenna arrays when served by co-located massive MIMO (C-MMIMO) counterpart is investigated.
Dhanushka Kudathanthirige +1 more
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Minisatellite surge spurs downlink infrastructure
Science, 2017Budding ground station networks capture deluge of CubeSat data.
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Fair downlink data distribution
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, 2005Downlink data distribution refers to the problem of distributing data from a base station to the mobile terminals within its radiation coverage. Because the condition or quality of the channel connecting a mobile terminal and its base station is not only time varying but also location dependent, fair data distribution on the downlink is a challenging ...
null Chi Kuo, null Jin-Fu Chang
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Downlink Transmission Optimization Framework
2012 IEEE Vehicular Technology Conference (VTC Fall), 2012This paper presents an optimization framework for downlink transmission parameters of mobile cellular systems. A typical network optimization approach is to divide the network into disjoint clusters of base-stations (BS). Optimization is then performed within each cluster for important parameters such as transmit power, precoder, etc.
Ngoc-Dung Dào +3 more
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CDMA downlink performance issues
Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (Cat. No.98TH8361), 2002Several key performance issues for the downlink of IS-95 based CDMA systems are explored. Performance data collected from a number of operational systems using CDMA diagnostic monitor equipment and post-processing analysis software is used to aid in the development of improved link and system performance prediction models.
R. Walton, M. Wallace, S. Howard
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Intelligent video downlink solutions
SPIE Proceedings, 2013Digital modulation technologies, maximum ratio combining diversity reception and special purpose modulation schemes, such as deep interleaving, provide a reliable and dynamic downlink solution. Multiple receive antennae are employed in the application, simultaneously combining the energy from all antenna inputs; blending individual carriers on a ...
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