OFDM-SDMA based system
Genetically Enhanced TTCM Assisted MMSE Multi user Detection for SDMA OFDM
... (MMSE) SDMA-MUD exhibits a lower complexity at the cost of a performance ...with SDMA-OFDM systems for the sake of improving the achievable ...(GA) based multiuser detection techniques have ...
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Performance of GA and PSO aided SDMA/OFDM Over Loaded System in a Near Realistic Fading Environment
... Optimization is the process of making something better. It consists of trying variations on an initial solution and using the information gained to improve the idea. Searching the cost surface (all possible function ...
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Multiple CFOs in OFDM SDMA Uplink: Interference Analysis and Compensation
... an OFDM-SDMA ...a system concept where the user signals are first separated by common OFDM-SDMA equalization and compensated for their individual CFO distortions ...the system ...
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Performance of Some Metaheuristic Algorithms for Multiuser Detection in TTCM Assisted Rank Deficient SDMA OFDM System
... algorithms based on Artificial Bee Colony (ABC) and Particle Swarm Optimization (PSO) principles for Multiuser Detection (MUD) in Turbo Trellis Coded modulation- (TTCM-) based Space Division Multiple Access ...
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Slow subcarrier hopped Space Division Multiple Access OFDM systems
... (MIMO) OFDM systems in- voking Multi-User Detection (MUD) techniques have attracted substantial research interests, which are capable of exploiting both transmitter multiplexing gain and receiver diversity ...with ...
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Performance of SDMA Multi User Detection Techniques for Walsh Hadamard Spread OFDM Schemes
... [5] based multi- user detection approaches, while SIC [3–5] was not di- rectly applicable to a spread OFDM ...WHT based spreading is performed across sub- carriers spaced apart from each other as far ...
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R}eview and Analysis of Multiuser Detection Techniques for Smart Antenna of SDMA-{OFDM
... of system, which is frequently limited by SIR (Signal to interference) ...the system capacity is increases significantly ...the system over one side of the communications link at least as well as ...
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Iterative Joint Channel Estimation and Symbol Detection for Multi User MIMO OFDM
... (SDMA) based MIMO OFDM [1]. More specifically, in SDMA-OFDM systems the transmitted signals of L simultaneous uplink mobile users - each equipped with a single trans- mit antenna - are ...
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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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Multiuser MIMO OFDM Systems using Subcarrier Hopping
... conventional SDMA-OFDM systems, a higher multiuser interference (MUI) is expected across the entire bandwidth, and hence all users will suffer from a performance ...attainable system throughput can ...
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PAPR Reduction Based On Hadamard Technique in OFDM System
... ABSTRACT: OFDM (Orthogonal frequency division multiplexing) technique has been adopted as the standards in the several high data rate applications, The OFDM signal has high PAPR because of the ...
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An Efficient Design Implementation Of OFDM Based Transmission System.
... of OFDM (orthogonal frequency division multiplexing) based Cognitive Radio for achieving a quality transmission and reception of biomedical data through the wireless ...using OFDM is it reduces ISI ...
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A MIMO System with Backward Compatibility for OFDM Based WLANs
... SISO system as specified by the IEEE ...MIMO system in the sequel) based on the BLAST ...MIMO system that is backward compatible with its SISO counterpart as speci- fied by the IEEE ...
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Diplomarbeit_HooChangShin.pdf
... In Fig. 4.1 is the relational behavior between the net bitrate of the OFDM trans- mitter system and the output data rate of its each module shown. The differences in the behaviors of Source, CRC, and Make ...
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Complexity Reduction in PTS based OFDM System: A Survey
... the OFDM system. OFDM system could face serious problem in practical applications when no technique has been employed to reduce the high PAPR ...
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LTE modeling for low complexity Time Varying channels in MIMO-OFDM
... wavelet based OFDM are better than that of DFT based ...wavelet based OFDM different types of filters can be used with the help of different wavelets ...
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FPGA based Reconfigurable Radix 4 and Radix 22 FFT Architecture for WiMAX
... accommodate system configuration changes even in run- time; it has significantly reduced prototyping latency comparing to ASIC; it is a cost-effective solution to meet the low volume short cycle product ...
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System Model of Underground UWB Based on MB OFDM
... communication system can overcome the problem of deployment and maintenance for wired information transmission ...monitoring system after the disaster ...monitoring system under the condition of ...
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Analysis of PAPR in Precoded OFDM Systems for M - QAM
... Precoded OFDM Systems for M-QAM (where M=16, 32, 64, ...precoded OFDM system, Walsh Hadamard Transform(WHT) precoded OFDM system, Selected Mapping(SLM), Discrete Fourier (DFT) precoded ...
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Comparative Analysis of BER, SER, PAPR &PSD in OFDM using Wavelet Based OFDM System
... In wavelet data can be divide into different frequency component i.e. no of subcarrier can be used, so wavelet can be performed mathematical function. It is better than traditional OFDM SYSTEM. At the same ...
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