multiuser code-division multiple-access
Support Vector Machine Multiuser Receiver for DS CDMA Signals in Multipath Channels
... IRECT-sequence code-division multiple-access (DS-CDMA) [1] constitutes an attractive multiuser scheme that allows users to transmit at the same carrier fre- quency in an uncoordinated ...
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A novel low complexity multiuser detector based on modified genetic algorithm in Direct Sequence-Code Division Multiple Access communication systems
... CDMA multiuser detection, and in [8] generalized regression neural network has been ap- ...blind multiuser detector, using support vector machine, was ...based multiuser detector (GA-MUD) was ...
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Study and analysis the BER performance of linear multiuser detectors in non-Gaussian noise channel
... where multiuser detection techniques may be applied, The known linear multiuser detectors are designed for communication systems with additive white Gaussian noise(AWGN) ...many multiuser detectors ...
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MIMO Multi Carrier Interleave Division Multiple Access System with Multiuser Detection: Performance Results
... ple access scheme called interleave division multiple- access (IDMA) [1] system with MIMO ...conventional code division multiple access (CDMA) ...a multiple ...
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Adaptive space time equalisation for multiple antenna assisted multiple input multiple output systems
... the multiple-input multiple-output (MIMO) system based on a space division multiple access (SDMA) scheme, where each transmitter employs a single antenna, while the receiver has ...
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Hybrid Iterative Multiuser Detection for Channel Coded Space Division Multiple Access OFDM Systems
... Abstract—Space division multiple access (SDMA) aided orthog- onal frequency division multiplexing (OFDM) systems assisted by efficient multiuser detection (MUD) techniques have recently ...
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Multiuser Detection Assisted Time and Frequency Domain Spread Multicarrier Code Division Multiple Access
... direct-sequence code-division multiple- access (MC DS-CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain ...ing multiuser detector (MUD), the joint TF-domain MMSE ...
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Time Hopping Multicarrier Code Division Multiple Access
... multicarrier code-division multiple-access (TH/MC-CDMA) scheme is proposed, where data is transmitted using relatively high-duration time-domain pulses with the aid of M -ary PPM ...
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Implementation of multi carrier code division multiple access frequency division multiple access with beyond 4G specifications
... combination access schemes is the uplink of 4 th Generation of mobile communications Single Carrier-Frequency Division Multiple Access SC-FDMA which is OFDMA combined with ...exploiting ...
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Transmitter-based Multiple Access Interference Rejection and Diversity Techniques for Code-division Multiple Access Systems
... For the purpose of analyzing the duality between the Tx-based and Rx-based MAI cancellation methods, we first introduced the Rx-based linear and nonlinear decorrelating multiuser detection techniques. The proposed ...
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Transmitter Diversity and Multiuser Precoding for Rayleigh Fading Code Division Multiple Access Channels
... a multiuser system, the multipath destroys the original orthogonality of the spreading ...utilizes multiple correlators that are matched to a specific delayed version of the original ...
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Performance evaluation of single user and multiuser CDMA Systems
... Overview: Multiuser detection is considered for linearly modulated signals ...chronous Code Division Multiple Access (CDMA) signals) sent over time varying, fre quency selective ...
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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System
... Frequency Division Multiplexing (OFDM) and Multi Carrier Code Division Multiple Access (MC-CDMA) are considered to be the promising technologies for 4G wireless communication systems ...
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Implementation of Code Division Multiple Access using Asynchronous Sequential Techniques
... The signal of each user is separated or “de-spread” from the others at the receiver using a correlator key with the associated code sequence. Spreading codes of a spreading sequence can be divided into ...
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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] ...
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Lowest PAPR Selection Technique from SLM and PTS with One IFFT Block in Wireless MC-CDMA Communication Systems
... Walsh Hadamard spreading code of length and a 16-QAM modulation, for the MC-CDMA system. The oversampling factor of the system is . The number of sub-blocks are chosen for the SLM optimization whereas the ...
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Design of CDMA Transmitter using Walsh Transform
... Code Division Multiple Access technique based receivers takes more time to process the ...Walsh code based on the method of Orthogonality and if we take the Walsh Transform of these ...
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Application of smart antennas to wideband code division multiple access : the uplink performance
... adaptive antenna arrays focus narrow high gain beams towards the desired user.. and nulls towards interferers, both coverage and capacity of the network can be.[r] ...
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A REVIEW ON IMPLEMENTATION OF SS- CDMA TRANSMITTER AND RECIEVER SYSTEM BY USING VHDL
... 1: Code division multiplexing system Block diagram At the transmitter end, two data sources generate digital data sequences which are individually multiplied using two data sequences which are individually ...
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A NOVEL TWO DIMENSIONAL SPECTRAL/SPATIAL HYBRID CODE FOR OPTICAL CODE DIVISION MULTIPLE ACCESS SYSTEM
... Journal of Theoretical and Applied Information Technology 15th February 2019.. The error percentage for the rotation value for each sitution is showining below:..[r] ...
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