synchronous CDMA multiuser detection
Multiuser Detection for Synchronous DS-CDMA in AWGN Channel
... linear multiuser detectors and non-linear detectors. In linear multiuser detection, a linear mapping (transformation) is applied to the soft outputs of the conventional detector to produce a new set ...
8
Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... Abstract— In this contribution we present a novel ant colony optimiza- tion (ACO) based multi-user detector (MUD) designed for synchronous multi-carrier direct sequence code division multiple access (MC DS- ...
5
Antenna Diversity Assisted Genetic Algorithm Based Multiuser Detection Schemes for Synchronous CDMA Systems
... Abstract—A spatial diversity reception assisted multiuser code-division multiple-access detector based on genetic algorithms (GAs) is proposed. Two different GA-based individual-selection strategies are ...
5
Genetic algorithm assisted Joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems
... symbol detection and channel estimation in DS/CDMA over flat-fading channels based on a genetic algorithm (GA) in- ...GA-based multiuser detection has been proposed, ...GA-based ...
14
Blind Direct Multiuser Detection for Uplink MC CDMA: Performance Analysis and Robust Implementation
... with synchronous downlink transmission, wherein the receiver can be implemented by means of simple diversity-combining strategies [7], such as orthogonal restoring combining (ORC), equal gain combining (EGC), ...
18
Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... optimum multiuser detector. A further sub-optimum multiuser detector investigated was the minimum mean square error (MMSE) detector, where a biased version of the CCL matrix was inverted in order to ...
278
Multiuser Detection in Multicarrier CDMA Systems Employing Both Time Domain and Frequency Domain Spreading
... DS- CDMA) scheme, which employs both time (T)-domain and fre- quency (F)-domain ...of synchronous TF-domain spread MC DS-CDMA, when communicating over an additive white Gaussian noise (AWGN) ...
5
M ary Coded Mouldation Assisted Genetic Algorithm Based Multiuser Detection for CDMA Systems
... Abstract—In this contribution we propose a novel M-ary Coded Modulation assisted Genetic Algorithm based Multiuser Detec- tion (CM-GA-MUD) scheme for synchronous CDMA systems. The performance of the ...
5
Genetic Algorithm Assisted Multiuser Detection for Asynchronous Multicarrier CDMA
... et al. [14] for a synchronous DS-CDMA system communicat- ing over an Additive White Gaussian Noise (AWGN) chan- nel. Yen et al. [3] [15–17] further improved the performance of the GA-based MUD, ...
5
Genetic Algorithm Assisted Multiuser Detection in Asynchronous CDMA Communications
... GA-based multiuser detector was first proposed by Juntti et ...a synchronous CDMA system communicating over an additive white Gaussian noise (AWGN) ...GA-based multiuser detector approaches ...
10
Blind linear multiuser detection for DS-CDMA wireless networks
... • C h a p te r 7: C o n str a in e d C M A -b a sed C o d e A c q u is itio n S c h e m e Unlike Chapter 3 to 6, the focus of Chapter 7 is on the problem of code acquisition, or the estimation of time delay of the ...
221
A novel interleaving scheme for multiuser detection of coded CDMA systems
... coherent detection in a 4-user bit-synchronous system with a set of sig- nature waveforms derived from Gold sequences of length seven that result in a normalized cross- correlation matrix R as in 5, ...
6
Genetic Algorithm Based Antenna Diversity Assisted Multiuser Detection for Synchronous CDMA Systems
... In our rst approach the so-called individuals of the GA are chosen for selection based purely on the sum of their corresponding gures of merit associated with the individual antennas, an[r] ...
5
DIMINISHED COMPLEXITY GENETIC ALGORITHM AIDED AND RADIAL BASIS FUNCTION ASSISTED MULTIUSER DETECTION FOR SYNCHRONOUS CDMA
... The analysis suggests that over a wide range of channel parameters the OMU receiver can outperform both the decorrelator and the single user MF and perform similarly to the linear minimum mean square error receiver, ...
7
Reduced Complexity Near Optimum Genetic Algorithm Assisted Multiuser Detection for Synchronous Multicarrier CDMA
... “Genetic algorithm assisted joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems:’ IEEE Joumal on Selected Areas in Communicarions.. Hanzo, “Geneti[r] ...
5
Combined error correction and multiuser detection for Rayleigh fading synchronous CDMA channel
... the multiuser environment are Multiple Access Interference (MAI) and multipath ...the multiuser detection problem is the conventional (or single-user) ...
10
Sphere Decoding for Space time Multiuser Detection in STBC DS CDMA System
... and multiuser detection technology in CDMA system are always the foci in wireless communication ...For CDMA system, multiuser detection is usually used to restrain multiple ...
5
Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... Optimum receivers such as nonlinear maximum likeli- hood detectors [2, 3, 17, 18] have been reported that are near-far resistant, but their computational complexity grows rapidly with the number of active users. To ...
17
Optimum Detection of CDMA
... There was a lot of research activity to use MUD detector in digital domain to reduce the crosscorrelation from different users [3]. A method is used here which could be inspired by the reference [4]. Near-far problem, ...
5
Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... blind multiuser detection for an asynchronous multicarrier DS-CDMA system employing multiple transmit and receive antennae over a Rayleigh fading channel is considered in this ...both ...
16