multiuser DS/CDMA 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 ...
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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 ...
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A MUSIC Based Algorithm for Blind User Identification in Multiuser DS CDMA
... a CDMA sys- tem, multiuser detection techniques are ...a CDMA receiver in a multiuser ...the CDMA reception is to assist multiuser detection schemes by user ...the ...
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An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems
... Our work is different from the work of [9] in that we avoided a direct subtraction of the estimated multiple-access interference from the received signal. Rather we used the es- timated multiple-access interference as ...
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Nonlinear Multiuser Receiver for Optimized Chaos-Based DS-CDMA Systems
... conventional DS-CDMA systems, chaos- based CDMA systems suffer from multi-user interference (MUI) due to other users transmitting in the ...non-blind multiuser detection in chaos-based ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... MC DS-CDMA system of [12], since subspace-based estimation techniques [4], [10], [11] are ca- pable of extracting the channel estimates ...MC DS-CDMA system of [12] for the sake of improving ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... he spent eight months at the Department of Electrical Engineer- ing, Princeton University, as a Visiting Research Fellow. He is cur- rently an Associate Professor at the University of Cassino, Italy. His current research ...
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Zero Forcing and Minimum Mean Square Error Multiuser Detection in Generalized Multicarrier DS CDMA Systems for Cognitive Radio
... Figure 5 shows the BER performance of the MC DS- CDMA system using both the OZF-MUD and SZF-MUD and supporting K = 31 users, when communicating over frequence-selective fading channels. From the results of ...
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Broadband MC DS CDMA Using Space Time and Frequency Domain Spreading
... (MC DS-CDMA) using space-time spreading (STS) assisted transmit diversity and frequency-domain (F-domain) spreading is investigated in the context of broadband communications over frequency-selective ...
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Genetic Algorithm Assisted Multiuser Detection in Asynchronous CDMA Communications
... direct-sequence CDMA (DS-CDMA) system, every bit of each user is interfered by two bits of every other user in the system, which are overlapping with the bit of interest, assuming an identical ...
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Genetic Algorithm Assisted Multiuser Detection for Asynchronous Multicarrier CDMA
... Multicarrier CDMA (MC-CDMA) [1–3] is a novel transmission technique, which combines DS-CDMA and Orthogonal Fre- quency Division Multiplexing (OFDM) ...Numerous Multiuser ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... data detection with the aid of the Recursive Least Squares (RLS) adaptive algorithm used for channel amplitude and phase ...the CDMA users. In other blind detection schemes, and compared the ...
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Support Vector Machine Multiuser Receiver for DS CDMA Signals in Multipath Channels
... The SVM technique has been applied to channel equalization [27]–[30]. These studies have shown that the SVM approach is very effective in overcoming ISI and cochannel interference. As the idea of SVM is originated from ...
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PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE
... user detection algorithms such as the decorrelating detector, minimum mean square error detector (linear detectors) and other sub-optimal ...multi-user detection offers CDMA based wireless systems, ...
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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... (MC DS- CDMA) ...MC DS-CDMA search space constituted by all possible combinations of the received multi-user ...MC DS-CDMA system employing 31 -chip Gold codes as the T-domain ...
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Adaptive DS/CDMA Non Coherent Receiver using MULTIUSER DETECTION Technique
... other detection schemes has the advantage that explicit knowledge of interference parameters is not required, since filter parameters can be adapted to achieve the MMSE ...
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Adaptive Minimum BER Linear Multiuser Detection for DS CDMA Signals in Multipath Channels
... linear multiuser detectors for DS-CDMA signals, the minimum mean square error (MMSE) detector [1]–[5] is the most popular one as it provides good performance and can readily be implemented using ...
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Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... multirate 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 ...
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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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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) ...Multi-user ...
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