Variable Spreading Factor based adaptive-rate CDMA
Adaptive Rate DS CDMA Systems using Variable Spreading Factors
... multicell CDMA systems. Our results show that by employing VSF-assisted adaptive rate transmissions, the effective throughput of a DS-CDMA system may be increased by 40% upon exploiting the ...
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Improving the Throughput of DS CDMA Systems Using Adaptive Rate Transmissions Based on Variable Spreading Factors
... contribution adaptive rate transmissions are investi- gated in the context of DS-CDMA systems using variable spreading fac- tors ...conventional adaptive rate transmission ...
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Throughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
... Variabale Spreading Factor, as an efficient adaptive rate technique in combination with space-time diversity and frequency diversity to increase the throughput and performance of the ...DS- ...
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Multiuser Detection in Multipath Environments for Variable Spreading-Factor CDMA Systems
... Abstract—A way to allow variable data rates in CDMA is by varying the spreading factor in accordance with the data rate requested by the user. A detection scheme suitable for multirate ...
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Admission Control for Variable Spreading Gain CDMA Wireless Packet Networks
... VI. N UMERICAL E XAMPLES In this section, we study an integrated voice/data system. The parameters of the studied system is depicted in Table II. The chip rate is chosen to be 1.2288 Mbps, the same as that of ...
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Variable-Rate Adaptive Trellis Coded QAM for Flat-Fading Channels
... wide-band CDMA. His research interest includes information theory, adaptive channel coding and modulation, digital transceiver design, power control, and CREST factor control algorithms, ...
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Adaptive constrained CM based multicarrier CDMA receivers in multipath fading channels
... blind adaptive MC-CDMA receivers are proposed in this ...CM- based algorithms to realize the transmission of multiple date symbols within one OFDM ...and variable-length (TRTap) receivers are ...
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Joint Detection and Interference Cancellation Based Burst by Burst Adaptive CDMA Schemes
... using spreading sequences having different processing gains have been proposed in thelit- erature by Adachi et ...wide-band CDMA proposal for the Universal Mobile Telecommunications System [47], different ...
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Cross Layer Resource Allocation for Variable Bit Rate Multiclass Services in a Multirate Multicarrier DS CDMA Network
... handling variable bit rate multiclass services in a cellular round-robin carrier-hopping multirate multicarrier direct-sequence code-division multiple-access (MC-DS-CDMA) system is ...by ...
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Maximization of Spreading Code Cardinality Using Transpose Function in Synchronous Optical CDMA
... is based on the above ...novel spreading code itself and to compare with the most similar existing code family, thus the major degrading factor in the analysis is the ‘hit’ interferences causing the ...
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Time and Frequency Domain Spreading Assisted MC DS CDMA using Interference Rejection Spreading Codes for Quasi Synchronous Communications
... new variable of , where & represents the smallest integer not less than & , for denoting the number users associated with a spe- cific T-domain code, which are differentiated by a unique F-domain ...F-domain ...
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Adaptive near minimum error rate training for neural networks with application to multiuser detection in CDMA communication systems
... Block-data based gradient adaptation In practice, the set of ¯ r j is ...effective adaptive algorithm is the p.d.f. p y ðy s Þ of the decision variable y s ðkÞ: Parzen window or kernel density ...
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Variable learning rate EASI-based adaptive blind source separation in situation of nonstationary source and linear time-varying systems
... learning rate using mutual information, and Zhang et ...learning rate by estimating a performance ...the variable learning rate sign natural gradient algorithm was proposed by Yuan et ...a ...
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A Novel Permutation Spreading for MIMO-CDMA Based on STBC
... STBC spreading permutation for 3 transmit and 3 receive antennas ...which spreading sequence in the set was most likely employed by the transmitter by observing the magnitudes of the matched filter outputs ...
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Development of a variable rate applicator for uniform fertilizer spreading
... a variable rate technology (VRT), uniform application of the fertilizer means that an amount of fertilizer is applied and there is uniformity in the application per unit area in a physical sense and ...
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Vision-based adaptive variable rate spraying approach for unmanned aerial vehicles
... conduct further research on the influence of the control algorithm on droplet deposition. Some researchers believed that UAV remote sensing provides a non-destructive and cost-effective platform for rapid monitoring of ...
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Block Adaptive Kernel Based CDMA Multiuser Detector
... In our previous work [11],[12] the SVM technique [13]–[15] has been applied for constructing kernel-based MUDs. Our study has shown that an SVM aided MUD trained using a relatively small block of noisy received ...
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Novel Adaptive Power and Rate Control in Third GenerationWideband CDMA Mobile Systems
... of adaptive technique to optimize its ...modified based on the individual receiver performance at the base station, there are no means to control and limit the average total transmit power of all ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami Fading Channels
... signed based on a low number of resolvable paths, or even based on a relatively high but constant number of resolv- able paths, cannot maximise the achievable ...designed based on a low number of ...
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Performance Evaluation of Adaptive Modulation Based MC CDMA System
... data rate we have to utilize the full channel based on the channel ...and based on that we have to vary the data rate so that our communication system per- formance parameters (bit error ...
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