synchronous multiuser CDMA systems
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 ...
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Combined error correction and multiuser detection for Rayleigh fading synchronous CDMA channel
... communication systems standards. Present-day CDMA systems, however, employ single-user (conventional) detection which is far from ...While multiuser detectors oer improved capacity, little ...
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Performance Analysis of Multi User Detectors for Synchronous DS CDMA Systems
... linear multiuser detectors and conventional single user matched filter in DS-CDMA ...in synchronous AWGN channel, and Gold sequence and Kasami sequence are utilized as the spreading ...Linear ...
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Genetic algorithm assisted Joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems
... ML multiuser detector is impractical to im- ...suboptimal multiuser detection proposals, highlighted in [5] and the references therein, which sacrifice performance for the sake of a reduced ...support ...
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Performance evaluation of single user and multiuser CDMA Systems
... of multiuser detection with error control ...coded multiuser systems, namely: 1) is it worthwhile studying coded multiuser systems, and if so 2) by how much does the performance of ...
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Antenna Diversity Assisted Genetic Algorithm Based Multiuser Detection Schemes for Synchronous CDMA Systems
... , respectively. Furthermore, a gain of about 2 dB can be achieved by the GA-based multiuser detector over the decorre- lator, before encountering an error floor. When the number of users is increased, the ...
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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... In this paper, we present a novel low-complexity ACO based MUD designed for the synchronous MC DS-CDMA uplink. The ACO technique has been shown to outperform GAs in some Non- deterministic Polynomial time ...
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An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems
... iterative multiuser detector for turbo-coded synchronous and asynchronous direct-sequence CDMA (DS-CDMA) ...The multiuser detector proposed in this paper has a better performance when ...
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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] ...
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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) ...MMSE ...
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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 of ...
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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] ...
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Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... DS/CDMA systems, discrete-time multi- ple-input multiple-output (MIMO) signal models can be formulated through chip-rate sampling of the received continuous-time signal followed by polyphase decomposi- ...
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Turbo multiuser detection with integrated channel estimation for differentially coded CDMA systems.
... All group blind algorithms based on subspace, for both coded and uncoded CDMA, require th e number of known and unknown users. It is reasonable to expect attaining the number of known users from higher layers (i.e ...
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Coding Across Multicodes and Time in CDMA Systems Employing MMSE Multiuser Detector
... multicode CDMA system with convolutional coding, two methods have been considered in the ...(DS-CDMA) systems which employ minimum mean squared error (MMSE) multiuser ...
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Multiuser Delay Tracking CDMA Receiver
... Multiuser channel estimation that does not use a mul- tipath decorrelator front-end may have less noise enhance- ment and larger capacity for relatively slow fading where there is no severe tracking problem. In ...
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Practical multiuser detection algorithms for CDMA
... Latva-aho and Lilleberg in [51] investigate Parallel interference cancellation (PIC) based channel parameter estimators for frequency selective fading channels for the uplink in code di[r] ...
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DIMINISHED COMPLEXITY GENETIC ALGORITHM AIDED AND RADIAL BASIS FUNCTION ASSISTED MULTIUSER DETECTION FOR SYNCHRONOUS CDMA
... aided Multiuser Detection (MUD) plans are fit for identifying the got signal of all clients, regardless of the possibility that the channel yield states are straightly ...aided Multiuser Detection (RBFNMUD) ...
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A Chip Level BSOR Based Linear GSIC Multiuser Detector for Long Code CDMA Systems
... In this work, a chip-level linear GSIC structure that is equiv- alent to the BSOR iterative method and makes use of the spreading codes directly is proposed; this enables its practi- cal implementation in long-code ...
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Joint Performance Study of Channel Estimation and Multiuser Detection for Uplink Long Code CDMA Systems
... The first assumption is adopted for most systems and conve- nient for analysis. However, the e ff ect of di ff erent interfering power is studied in the simulation in the paper. For the sec- ond assumption, it is ...
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