CDMA multiuser detection problem
A novel interleaving scheme for multiuser detection of coded CDMA systems
... single-user detection has thus far been the de- modulation method of choice in CDMA receivers despite many shortcomings due to its ...simplicity. Multiuser detectors on the other hand have the po- ...
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Study and analysis the BER performance of linear multiuser detectors in non-Gaussian noise channel
... linear multiuser detectors have more performance gain over the conventional matched ...robust multiuser detection techniques that based on M-Estimator , a class of estimators belong to robust ...
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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’ information. ...
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Blind linear multiuser detection for DS-CDMA wireless networks
... In Chapter 3, the problem of linear multiuser detection was considered with out multipath effect and asynchronism. Despite its global convergence behaviour and LMS-like complexity, it is revealed ...
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Combined error correction and multiuser detection for Rayleigh fading synchronous CDMA channel
... the multiuser environment are Multiple Access Interference (MAI) and multipath ...challenging problem since user signals are asynchronous and the link suers from the "near-far" problem, where ...
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Optimized power allocation for iterative multiuser detection for a SC-CDMA uplink
... der to get an appropriate criterion for fair comparison with the equal power case. The criterion for convergence is still reaching the point of η=1 after a finite number of iterations. For the PIC this is fulfilled if f ...
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Turbo multiuser detection with integrated channel estimation for differentially coded CDMA systems.
... direct-sequence CDMA (DS-CDMA) is studied since it is deemed to be more suitable for mobile communications [31], ...ata detection for each user is accomplished independently of th a t performed on ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... The problem of 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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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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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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Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... Direct-sequence/code-division multiple access (DS/CDMA) has been widely used in multiuser cellular wireless commu- nications (e.g., 2G, 3G, and ultra-wideband systems) due to e ffi cient spectrum utilization, ...
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Multiuser Detection for Synchronous DS-CDMA in AWGN Channel
... Multiuser detection seeks to enhance the performance of non-orthogonal signaling schemes for multiple-access communications by combating MAI caused by the presence of more than one user in the ...
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Blind Direct Multiuser Detection for Uplink MC CDMA: Performance Analysis and Robust Implementation
... We consider the problem of blind (i.e., without training sequences) linear mitigation of multiple-access interference in the uplink of quasi-synchronous multicarrier code-division multiple-access (MC-CDMA) ...
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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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Coded Modulation Assisted Genetic Algorithm Based Multiuser Detection for CDMA Systems
... In an effbrt to increase the system's performance with the aid of channel coding, but without increasing the required bandwidth, in this contribution we will investigate the performance [r] ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... for the smart antenna aided generalized MC DS-CDMA system of [12], since subspace-based estimation techniques [4], [10], [11] are ca- pable of extracting the channel estimates required. More explicitly, the ...
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Blind Multiuser Detection for Long Code CDMA Systems with Transmission Induced Cyclostationarity
... long-code CDMA systems are revisited. Long-code CDMA system is characterized using a time-invariant system model by modeling the received signals and MUIs as cyclo- stationary processes with ...
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Sphere Decoding for Space time Multiuser Detection in STBC DS CDMA System
... space-time multiuser detection algorithm in our system and classical decorrelating multiuser detection algorithm in one-antenna system are showed in ...
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Burst by Burst Adaptive Multiuser Detection CDMA: A Framework for Existing and Future Wireless Standards
... group detection scheme for Gaussian channels [65], and later developed it further for frequency-selective slow Rayleigh fading channels ...A multiuser receiver that integrated MAI rejection and channel ...
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Multiuser Delay Tracking CDMA Receiver
... As seen in Section 4, the user-delay variation in a prac- tical system is far less than that used in our simulations. In our simulations, we have averaged the time delay error over a block of M = 9 symbols to filter out ...
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