multiuser DS/CDMA systems
An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems
... vanced CDMA systems with specific focus on system-level design of multiuser detectors for the channel coding (with emphasis on turbo and turbo-like codes), the uncoded CDMA systems, ...
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PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE
... Chaotic sequences are Noise like waveform and possess Wideband spectrum chaotic sequence have very low values of the cross correlation function among them. This is an important issue with regard to security, because the ...
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Blind linear multiuser detection for DS-CDMA wireless networks
... In this chapter, a new linear receiver structure for blind multiuser detection in DS- CDMA systems under a frequency selective multipath environment is proposed and analysed. The proposed ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... of multiuser interference and hence has the potential of substantially increasing the capacity of CDMA ...single-carrier DS-CDMA systems based on the philosophy of signal subspace ...
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Zero Forcing and Minimum Mean Square Error Multiuser Detection in Generalized Multicarrier DS CDMA Systems for Cognitive Radio
... is also required to be updated correspondingly. In this sce- nario, the proposed SZF-MUD having the processing matri- ces in (22) will have a higher complexity than the single-user MF receiver. Furthermore, when ...
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Multipass Channel Estimation and Joint Multiuser Detection and Equalization for MIMO Long Code DS/CDMA Systems
... and multiuser detection for a multiantenna DS/CDMA system operating over a frequency-selective fading channel and adopting long aperiodic spreading codes is considered in this ...and multiuser ...
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A MUSIC Based Algorithm for Blind User Identification in Multiuser DS CDMA
... CDMA-based systems are widely used in various wireless ap- ...a CDMA sys- tem, multiuser detection techniques are ...a CDMA receiver in a multiuser ...the CDMA reception ...
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Performance evaluation of single user and multiuser CDMA Systems
... ventional receiver demodulates each signal using the corresponding single-user detector (matched filter followed by a threshold decision device) thereby treating the multiple ac cess interference as white Gaussian ...
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Support Vector Machine Multiuser Receiver for DS CDMA Signals in Multipath Channels
... attractive multiuser scheme that allows users to transmit at the same carrier fre- quency in an uncoordinated ...creates multiuser interference (MUI) which, if not controlled, can seriously degrade the ...
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Study and analysis the BER performance of linear multiuser detectors in non-Gaussian noise channel
... years multiuser detection techniques (MUD) have attracted significant attention to improve the performance of direct sequence code-division multiple-access (DS-CDMA) ...in CDMA communication ...
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Adaptive DS/CDMA Non Coherent Receiver using MULTIUSER DETECTION Technique
... A novel non-coherent receiver for joint timing recovery and data detection in DS-CDMA systems is proposed in this work. It estimates the desired signal and code delay by LMS algorithm at the same ...
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Adaptive Minimum BER Linear Multiuser Detection for DS CDMA Signals in Multipath Channels
... After graduation, he worked for four years as a Development Engineer with the Radar Systems De- partment, GEC-Marconi Avionics, Edinburgh, U.K. From 1983 to 1986, he was a research associate with the Department of ...
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Multiuser Decorrelating Based Long Range Frequency Domain Channel Transfer Function Prediction in Multicarrier DS CDMA Systems
... MC DS-CDMA [1], [2], [3], [4], [5], has been proposed for a variety of high-rate wireless communication ...MC DS- CDMA system investigated in [6], which incorporates the subclasses of both ...
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Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... time-invariant systems. This algorithm has been applied to blind multiuser detection of single- rate direct-sequence/code-division multiple-access (DS/CDMA) systems and blind source ...
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Blind Reduced Rank MMSE Detector for DS CDMA Systems
... To implement the blind reduced-rank MMSE detector, we need to compute the eigenvectors and eigenvalues of the sam- ple covariance matrix. This can be achieved by performing singular value decomposition (SVD) or ...
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Nonlinear Multiuser Receiver for Optimized Chaos-Based DS-CDMA Systems
... Thus, one could say that in the most general mode, three main parameters are important in the performance of chaotic binary sequences; the type of the chaotic generator among different discrete mathematical equations, K ...
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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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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... MC DS-CDMA ...MC DS-CDMA system supporting K = 32 users with the aid of length-31 Gold codes used as the T-domain spreading ...MC DS-CDMA system considered is capable of ...
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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 ...
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Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... the multiuser interference, since it has an influence on both the overlap of the modulated subcarrier signals and on the processing ...multitone DS-CDMA, then a subcarrier signal will overlap with a ...
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