multiuser DS-CDMA signals
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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Sphere Decoding for Space time Multiuser Detection in STBC DS CDMA System
... uplink DS-CDMA system based on Alamouti STBC is proposed in order to restrain the multiple access interference (MAI) in DS-CDMA ...space-time multiuser detection ...received ...
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Nonlinear Multiuser Receiver for Optimized Chaos-Based DS-CDMA Systems
... the multiuser detection (MUD) [17] in order to cancel the near-far ...of multiuser detectors (MUDs) have been proposed to deal with MUI through demodulation of mutually interfering ...
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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 ...
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Adaptive DS/CDMA Non Coherent Receiver using MULTIUSER DETECTION Technique
... The DS/CDMA receivers are divided into Single-User and Multi-User detectors. A single user receiver detects the data of one user at a time whereas a multi-user receiver jointly detects several users’ ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... sequence CDMA (DS-CDMA)— and in particular its resistance to multipath e ff ects induced by the radio channel as the communication rate grows larger and larger [1]—while relaxing some very demand- ing ...
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PERFORMANCE AND COMPARISON OF LINEAR MULTIUSER DETECTORS IN DS-CDMA USING CHAOTIC SEQUENCE
... The DS/CDMA receivers are divided into Single-User and Multi-User detectors. A single user receiver detects the data of one user at a time whereas a multi-user receiver jointly detects several users’ ...
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An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems
... Figure 7 shows that the performance of the user of inter- est improves in the near-far scenario when compared with the equal-power scenario. This same phenomenon in which the performance of the user of interest in the ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... Serial (P/S) conversion, a sufficiently long cyclic prefix is inserted in the OFDM symbol for the sake of compensating for the delay-spread- induced Inter-Symbol Interference (ISI) imposed by the dispersive channel [13]. ...
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Blind linear multiuser detection for DS-CDMA wireless networks
... users, signals from other users would appear as Multiple Access Interference (MAI) to the signal of ...approach, multiuser detection does not treat MAI as structure-less Gaussian ...
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A MUSIC Based Algorithm for Blind User Identification in Multiuser DS CDMA
... users’ signals to avoid their statis- tics being mixed ...synchronous CDMA system, we can devise a decorrelator receiver only based on signal subspace information for each active user ...
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Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... lot signals in advance resulting in reduced spectral ...blind multiuser detector only using received sig- nals (with no need of training sequences) is ...
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Multi Functional Antenna Array Assisted MC DS CDMA Using Downlink Preprocessing Based on Singular Value Decomposition
... In CDMA wireless communications the MC DS-CDMA is recog- nized as a high-flexibility multiple-access scheme, which is capable of providing a higher number of degrees-of-freedom for system design and ...
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Multiuser Detection for Synchronous DS-CDMA in AWGN Channel
... conventional CDMA is an interference limited system when MAI is increasing with the number of active users, and when signals are received with different power levels due to near-far ...
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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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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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Multipass Channel Estimation and Joint Multiuser Detection and Equalization for MIMO Long Code DS/CDMA Systems
... for multiuser systems [15, ...adaptive multiuser detectors for short-code DS/CDMA systems with transceivers equipped with multiple ...to CDMA systems em- ploying long ...
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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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Multiuser Delay Tracking CDMA Receiver
... “Nonlinear multiuser pa- rameter estimation and tracking in CDMA systems,” IEEE ...“A DS-CDMA tracking mode receiver with joint channel/delay estimation and MMSE detection,” IEEE ...for ...
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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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