Results 71 to 80 of about 3,134,060 (181)

Decision-Feedback Multiuser Detection in Multicell Multicarrier DS-CDMA Systems with/without BS Cooperation

open access: yes, 2013
—In this contribution, we investigate the signal detection in the multicarrier direct-sequence code-division multiple-access (DS-CDMA) systems employing both time (T)-domain and frequency (F)-domain spreading, which are referred to as the TF/MC DS-CDMA ...
Zhang, Youguang   +5 more
core   +2 more sources

Stability Properties of Network Diversity Multiple Access with Multiple-Antenna Reception and Imperfect Collision Multiplicity Estimation

open access: yesJournal of Computer Networks and Communications, 2013
In NDMA (network diversity multiple access), protocol-controlled retransmissions are used to create a virtual MIMO (multiple-input multiple-output) system, where collisions can be resolved via source separation.
Ramiro Samano-Robles, Atilio Gameiro
doaj   +1 more source

Genetic algorithm assisted Joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems

open access: yes, 2001
A novel multiuser code division multiple access (CDMA) receiver based on genetic algorithms is considered, which jointly estimates the transmitted symbols and fading channel coefficients of all the users.
Hanzo, L., Yen, K.
core   +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  

Minimum bit error rate multiuser transmission designs using particle swarm optimisation

open access: yes, 2009
We consider the downlink of a multiuser system equipped with multiple antennas transmitting to multiple single-antenna mobile receivers. Particle swarm optimisation (PSO) is invoked to solve the constrained nonlinear optimisation problem for the minimum ...
Tan, S.   +3 more
core   +1 more source

Multiuser Detection Assisted Time- and Frequency-Domain Spread Multicarrier Code-Division Multiple-Access

open access: yes, 2006
In this contribution, we study a reduced-complexity multiuser detection aided multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain spreading.
Wei, H., Yang, L-L., Hanzo, L.
core   +1 more source

Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of channel identification and signal combining/
Li Hongbin, Sun Wei
doaj   +1 more source

Blind Adaptive Decorrelating RAKE (DRAKE) Downlink Receiver for Space-Time Block Coded Multipath CDMA

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
A downlink receiver is proposed for space-time block coded CDMA systems operating in multipath channels. By combining the powerful RAKE receiver concept for a frequency selective channel with space-time decoding, it is shown that the performance of ...
Jayaweera Sudharman K, Poor H Vincent
doaj   +1 more source

Blind Per-Survivor Processing-Based Multiuser Detection for Channel-Coded Multi-Carrier DS-CDMA Systems

open access: yes, 2004
In this paper, we present a blind Per-Survivor Processing (PSP)-hased Multiuser Detector (MUD) for synchronous Multicarrier (MC) Direct Sequence (DS) CDMA systems.
Yeap, B-L   +4 more
core   +1 more source

Blind Identification of Out-of-Cell Users in DS-CDMA

open access: yesEURASIP Journal on Advances in Signal Processing, 2004
In the context of multiuser detection for the DS-CDMA uplink, out-of-cell interference is usually treated as Gaussian noise, possibly mitigated by overlaying a long random cell code on top of symbol spreading.
Jiang Tao, Sidiropoulos Nicholas D
doaj   +1 more source

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