Results 81 to 90 of about 20,358 (233)

Blind Chip-Rate Multiuser Equalisation

open access: yes, 2003
This paper addresses blind multiuser detection in a DS-CDMA downlink channel. The synchronous users are separated by re-establishing orthogonality of their spreading sequences in a common chip-rate equaliser.
S. Weiss, M. Hadef, Weiss, S., Hadef, M.
core   +1 more source

Assessment of the Use of Coconut Water as a Cultivation Medium for Limnospira (Arthrospira) platensis (Gomont): Effects on Productivity and Phycocyanin Concentration

open access: yesPhycology
Due to the scarcity of sustainable inputs for photosynthetic microorganisms’ biotechnology, the search for natural substrates such as coconut water has gained prominence.
Maria Rafaele Oliveira Bezerra da Silva   +6 more
doaj   +1 more source

Multiuser MIMO-OFDM Systems using Subcarrier Hopping

open access: yes, 2006
Recently space division multiple access (SDMA) assisted multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems invoking multiuser detection (MUD) techniques have attracted substantial research interest, which is ...
Jiang, M, Hanzo, L
core  

Harmony search aided iterative channel estimation, multiuser detection and channel decoding for DS-CDMA [PDF]

open access: yes, 2010
A novel Multiuser Detection (MUD) scheme is proposed for DS-CDMA systems employing the so-called Harmony Search (HS) algorithm, which is a novel meta-heuristic optimisation method.
Rong Zhang   +3 more
core   +1 more source

Outage probability of multiuser cognitive MIMO system

open access: yesTongxin xuebao, 2009
To analyze the multi-antenna gain in multiuser cognitive radio system, a multiuser cognitive MIMO framework was presented. The outage performance was considered in the multiple-antenna flat Raleigh fading broadcast downlink channel and the closed-form ...
WU Ying-xiao1, ZHU Qi2
doaj  

Space–Time Line Code for Massive MIMO and Multiuser Systems With Antenna Allocation

open access: yesIEEE Access, 2018
This paper first investigates an M-by-2 massive multiple-input multiple-output (MIMO) system that transmits a single stream is investigated. For this system, we propose a space-time line code (STLC), which is a transmitting and combining (at a receiver ...
Jingon Joung
doaj   +1 more source

MPOE Based Adaptive Multiuser Detection

open access: yes, 2008
Introduction . Continuous Time Discrete Time . MPOE Based Methods: Introduction . Probability of Error Expressions Probability Distribution of the Decision Statistics Joint Probability Conditional Probability .
Multiuser Detection Brief
core  

Hybrid Iterative Multiuser Detection for Channel Coded Space Division Multiple Access OFDM Systems

open access: yes, 2006
Space division multiple access (SDMA) aided orthogonal frequency division multiplexing (OFDM) systems assisted by efficient multiuser detection (MUD) techniques have recently attracted intensive research interests.
Jiang, M.   +5 more
core   +1 more source

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

Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system

open access: yesTongxin xuebao, 2014
In communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users,signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and authorized signal were carried out ...
Zhao LI   +3 more
doaj  

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