Results 11 to 20 of about 4,925 (231)

Multiuser Detection For Asynchronous ARGOS Signals [PDF]

open access: yes, 2010
In this paper, we investigate the application of multiuser detection techniques to a Low Polar Orbit (LPO) mobile satellite used in the ARGOS system. These techniques are used to mitigate the multiple access interference in the uplink transmission of the
Calmettes, Thibaud   +4 more
core   +1 more source

Time-Collaborative Constellation Design With Finite-Alphabet Inputs for Two-User Multi-Access Visible Light Communications

open access: yesIEEE Photonics Journal, 2019
Ubiquitous light-emitting diodes provide natural infrastructures for multiuser visible light communications (VLCs). However, the current available works for multiuser VLC systems mainly focus on broadcast scenarios and beamforming techniques.
Zhen-Yu Wang, Hong-Yi Yu, Da-Ming Wang
doaj   +1 more source

Differential Characteristics Based Iterative Multiuser Detection for Wireless Sensor Networks

open access: yesSensors, 2017
High throughput, low latency and reliable communication has always been a hot topic for wireless sensor networks (WSNs) in various applications. Multiuser detection is widely used to suppress the bad effect of multiple access interference in WSNs.
Xiaoguang Chen   +3 more
doaj   +1 more source

Enhancing Security of Primary User in Underlay Cognitive Radio Networks With Secondary User Selection

open access: yesIEEE Access, 2018
This paper investigates the effect of multiuser gain provided by the secondary user selection on the secrecy performance of the primary users. We first propose a simple scheme where the user with the minimal interference channel is selected, and derive a
Mian Qin   +3 more
doaj   +1 more source

Iterative MIMO Turbo Multiuser Detection and Equalization for STTrC-Coded Systems with Unknown Interference

open access: yesEURASIP Journal on Wireless Communications and Networking, 2004
Iterative multiuser detection in a single-carrier broadband multiple-input multiple-output (MIMO) system is studied in this paper. A minimum mean squared error (MMSE) low-complexity multiuser receiver is derived for space-division multiple-access (SDMA)
Veselinovic Nenad   +2 more
doaj   +2 more sources

Near-Optimum Iterative Multiuser Detection in Time-Frequency-Domain Spread Multicarrier DS-CDMA Systems [PDF]

open access: yes, 2010
In this contribution we propose and study a novel iterative time-frequency-domain (TF-domain) multiuser detector (MUD) for the multicarrier direct-sequence code-division multiple-access system employing both T-domain and F-domain spreading, which, for ...
Yang, Lie-Liang   +5 more
core   +1 more source

Soft Decoding Assisted Interference Cancellation in a Non-Binary LDPC Coded Fast Frequency Hopping Multiuser System Using Product Combining [PDF]

open access: yes, 2007
In this contribution, soft-input-soft-output (SISO) decoding aided successive interference cancellation (SIC) is considered in fast frequency hopping (FFH), M-ary frequency shift keying (MFSK) using product combining (PC), when operating in multiple ...
Lie-Liang Yang   +7 more
core   +1 more source

Bidirectional algorithms for interference suppression in multiuser systems [PDF]

open access: yesEURASIP Journal on Wireless Communications and Networking, 2015
This paper presents adaptive bidirectional minimum mean-square error parameter estimation algorithms for fast-fading channels. The time correlation between successive channel gains is exploited to improve the estimation and tracking capabilities of adaptive algorithms and provide robustness against time-varying channels.
Patrick Clarke, Rodrigo C. de Lamare
openaire   +1 more source

Multiuser Transmit Precoding Design for Dimming Compatible Visible Light Communications

open access: yesApplied Sciences, 2019
In multiuser visible light communication (VLC) systems, many transmit precoding (TPC) techniques have been investigated to suppress multiuser interference.
Baolong Li   +5 more
doaj   +1 more source

LDPC encoding performances for fading suppression in MIMO-CDMA wireless networks

open access: yesEAI Endorsed Transactions on Mobile Communications and Applications, 2018
In multiuser wireless communication systems, signal recovery, even at low BER is a relevant factor for ensuring a safe and reliable communication. Efforts for interference minimization include multiple analysis of source coding/decoding techniques ...
Ioana Marcu   +3 more
doaj   +1 more source

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