blind MMSE CDMA detection
Blind Direct Multiuser Detection for Uplink MC CDMA: Performance Analysis and Robust Implementation
... the uplink the knowledge of the spreading codes of the in-cell users. The theoretical analysis has evidenced that the incor- poration of the quadratic constraint has the e ff ect of slightly reducing the degrees of ...
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Development of a Multiuser Detection Testbed
... the blind adaptive MMSE detector can be clearly seen from Figure ...the blind adaptive MMSE detector with step size µ = 10 −4 are plotted for a ten user, perfect power control CDMA ...
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BLIND CHANNEL ESTIMATION AND MULTIUSER DETECTION FOR MULTI-RATE CDMA COMMUNICATIONS
... dual-rate blind detectors which are comparable to the corresponding adaptive ST dual-rate blind MMSE ...dual-rate blind MMSE detector for each element is a natural ...high-rate ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... Multi-User Detection (MUD) [2], [3], [4], [5], [1], which is capable of essentially eliminating the effects of multiuser interference and hence has the potential of substantially increasing the capacity of ...
5
Blind Multiuser Detection by Kurtosis Maximization for Asynchronous Multirate DS/CDMA Systems
... and MMSE detector require the channel in- formation estimated through using training sequences or pi- lot signals in advance resulting in reduced spectral ...a blind multiuser detector only using received ...
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A Joint Optimization Criterion for Blind DS-CDMA Detection
... several blind criteria for the es- timation of a specific user with knowledge only of its spread- ing ...of MMSE cri- teria to exploit the signal subspace defined by the desired user’s code [2, ...a ...
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A Low Complexity Blind Multiuser Receiver for Long Code CDMA
... the blind mul- tiuser joint symbol-channel estimation techniques in [19, 20] and can be called deterministic, since no statistical model of the sources is ...a blind decorrelating RAKE and MMSE ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... the blind version has been evaluated through Monte Carlo ...the MMSE and ZF ones and that the use of multiple receive antennae has a beneficial impact on the system ...
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Blind Reduced Rank MMSE Detector for DS CDMA Systems
... Since CDMA is not fundamentally MAI limited [1], multiuser detection (MUD) techniques can substantially improve the perfor- mance of a CDMA ...
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Blind ICA detection based on second order cone programming for MC CDMA systems
... and MMSE-ICA detectors, have been proposed, which are developed by modifying the classical complex- valued fast independent component analysis (FastICA) al- gorithm [36], based on the quasi-Newton iteration as ...
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Comparative Analysis of GA-MMSE and PSO-MMSE Based MUD Technique Aided SDMA/OFDM System
... As shown in the upper half of Figure 3.Iinformation bit blocks b(l) l , ··· ,L of the L mobile users are first encoded by the L independent FEC encoders. The resultant coded bits b(l)s are then mapped to Pulse Amplitude ...
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Analysis, Design, and Test of CDMA LFSR with Offset Mask Using Standard ICs
... Finite fields provide the necessary theory in designing LFSR [6] [7]. From a primitive polynomial, the equiva- lent circuit can be modeled with electronic components such as flip flops and XOR gates; each monomial indi- ...
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Fast Adaptive Blind MMSE Equalizer for Multichannel FIR Systems
... Figure 3(a) (SIMO case with quadratic constraint) and Figure 3(b) (MIMO case) represent the convergence rate of the adaptive algorithm with SNR = 15 dB. Given the low computational cost of the algorithm, a relatively ...
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BER Degradation of MC CDMA at High SNR with MMSE Equalization and Residual Frequency Offset
... Multicarrier Code Division Multiple Access (MC-CDMA) is an attractive technique for high speed wireless data transmission in view of its advantages over orthogonal frequency division multiplexing. In this paper, ...
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Employing LSF at Transmitter Eases MMSE Adaptation at Receiver in Asynchronous CDMA Systems
... the MMSE receiver as quick as ...optimal MMSE receiver, leading to notable reduction in the number of iterations required to achieve su ffi ciently high SINR ...
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Coding Across Multicodes and Time in CDMA Systems Employing MMSE Multiuser Detector
... CMT generally provides better performance than CT with all four metrics. As the variation of SIRs among the multicodes increases at the MMSE detector output, the gain of CMT over CT becomes more significant. The ...
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Uplink Performance Evaluation of CDMA Communication System with RAKE Receiver and Multiple Access Interference Cancellation
... The mobile radio channel plays fundamental limitations on the performance of wireless communication systems. The transmission path between the transmitter and the receiver can vary from simple line-of-sight to one that ...
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Blind Per Survivor Processing Based Multiuser Detection for Channel Coded Multi Carrier DS CDMA Systems
... Subsequently, we analyse the performance of the synchronous MC DS-CDMA system considered, when employing three different channel coding schemes, namely Low Density Parity Check LDPC code[r] ...
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Time Hopping Multicarrier Code Division Multiple Access: System Outline and Performance
... 7 shows the bit error probability of the TH/MC-CDMA The detection operation of the TH/MC-CDMA system can systems with respect to supporting various number of users, be understood by mean[r] ...
5
Reduced Rank Chip Level MMSE Equalization for the 3G CDMA Forward Link with Code Multiplexed Pilot
... 3G CDMA systems. The chip-level minimum mean square error (MMSE) estimate of the (multiuser) synchronous sum signal transmitted by the base, followed by a correlate and sum, has been shown to perform very ...
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