multi-user DS-CDMA system
Performance Analysis of Multi User Detectors for Synchronous DS CDMA Systems
... effect. Multi-User Detection plans are utilized to recognize the users’ information in nearness of MAI and near- far ...single user matched filter in DS-CDMA ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... OFDM system using an efficient adaptive predistorter,” IEEE Transactions on Communications, ...multicarrier CDMA system with adaptive subchannel allocation for forward links,” IEEE Transactions on ...
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Analysis The Effect Of Diversity Technique On A Multi-user Wideband Cdma (w-cdma) Communication System
... All these schemes try to take advantage of the WCDMA radio techniques without ignoring the numerous advantages of the already existing GSM networks. The standard that has emerged is based on ETSI’s Universal Mobile ...
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Differential space time modulation schemes for smart antenna aided generalized multicarrier DS CDMA systems
... generalized Multi-Carrier Direct Sequence Code Division Mul- tiple Access (MC DS-CDMA) system of [10] to propose a novel Differential Space-Time Spreading (DSTS) scheme as well as a ...
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Interference Free Broadband Single and Multi Carrier DS CDMA
... in DS-CDMA predetermines the properties of the ...interfering multi-user and multipath components arrive within this IFW, which may be ensured with the aid of quasi-synchronous adaptive timing ...
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Analytical Bit Error Rate Performance of DS CDMA Ad Hoc Networks using Large Area Synchronous Spreading Sequences
... positioning system based synchronisation should ideally also be ...complex multi-user detection or interference cancellation techniques, despite potentially encountering challenging near – far ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... FH/MC DS-CDMA based broadband mobile wireless system constitutes an attractive candidate system, since it is capable of efficiently utilizing the available frequency resources, as we discussed ...
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Non Iterative Algorithm for Multi user Detection in DS CDMA System: An Enhanced Harmony Search Algorithm
... and Multi-Carrier Code Division Multiple Access (MC-CDMA). CDMA is an efficient method of bandwidth allocation and is used in many to one wireless communication channels [2] ...higher system ...
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A resource allocation approach to control interference in Multi Carrier DS CDMA systems
... as multi-user detection (MUD)[19],interference cancellation(IC)[20] and antenna beam forming[21], and succeeded to reduce the intra-cell interference to a large extent and inter-cell interference to a small ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... a system parameter identified as the channel map ...a DS-CDMA system, upon receiving a trigger as a read-out from the chan- nel map, the system’s decision block decides to switch to a ...
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ADAPTIVE CODE TO USER ALLOCATION FOR INTERFERENCE MANAGEMENT ON THE DOWNLINK DS-CDMA SYSTEMS
... diagram in Fig.4. 1. Assuming Nc = K, at each symbol period and using the instantaneous values of Xi, the decision variables’ distribution for each of the pc allocation patterns is evaluated and the optimal pattern is ...
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Multi Functional Antenna Array Assisted MC DS CDMA Using Downlink Preprocessing Based on Singular Value Decomposition
... MC DS- CDMA system considered in [4], [5], when assuming the TDD-based cellular communications and that the BS transmitter can exploit the knowledge about both the DoAs and the CIRs in the context of ...
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Exact Performance Measures for Direct-Sequence Code Synchronization in Fading Channels
... Abstract—This paper presents an exact performance analysis for the evaluating a mean acquisition time in a cellular code division multiple access system. New expressions for the probabilities of detection, miss, ...
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A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... Fig. 5. BER versus the number of users K in an asynchronous DS-CDMA system using random spreading sequences and BPSK modulation commu- nicating over Nakgami- m channels. The length of the random ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... From June 1997 to December 1997, he was a Vis- iting Scientist at the Institute of Radio Engineering and Electronics, Academy of Sciences of the Czech Republic, Prague. Since December 1997, he has been with the ...
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Compressive Sensing Multi User Detection for MC CDMA System in Machine to Machine Communication
... the multi-user symbol vector X is ...sparse multi-user signal by received signal y and known A which is a typical CS reconstruction ...overloaded system possible ...
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Performance Improvement of Wireless communication System of DS CDMA with Rake Receiver
... the CDMA Rake receiver is used. In a wireless mobile communication system, a signal can travel from transmitter (TX) to receiver (RX) over multiple paths; this phenomenon is referred to as multipath ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... DS-CDMA system is roughly 70% smaller than the OFDM variance and roughly 10% larger than the theoret- ical variance. Fig 5 shows the effects of the AWGN component in variance of the CFO as a function ...
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Differentially Coherent Code Acquisition in the MIMO Aided Multi Carrier DS CDMA Downlink
... of multi-carrier transmissions leads to exactly the same detrimental effect on the achievable MAT performance as that imposed by employing multiple transmit antennas owing to the reduced ‘per-diversity-branch’ ...
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Pre-Decorrelation for Coded DS-CDMA System with Space-Time Block Coding
... This paper proposes an improved pre- decorrelating approach for the coded direct sequence code division multiple access (DS-CDMA) multiuser detection (MUD) with space time coding (STBC). The main ...
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