MC-CDMA transmission systems
PERFORMANCE ANALYSIS OF FIXED AND MOBILE WIMAX SYSTEM BASED ON OFDM AND MC-CDMA SYSTEMS
... Many researchers do believe that WiMAX can move the wireless data transmission concept into a new dimension. There are basically three limiting factors for transmitting high data rate over the wireless medium that ...
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Survey of Interference Mitigation Techniques and Correlation Properties of Spreading Codes for MC-CDMA System
... communication systems. This paper starts with the detailed structure of MC-CDMA system, their requirements, and then proceeds to describe the Issues happen in MC-CDMA wireless ...
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Enhancing throughput in MC-CDMA Systems Using Non Contiguous Spectrum
... based MC-CDMA system has Eliminating transmission on poor subcarrier can considerably improve BER performance of the system and higher order modulation utilized on respective subcarriers for ...
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Generic Reduced Complexity MMSE Channel Estimation for OFDM and MC CDMA
... (MC- CDMA) techniques [1] are capable of satisfying these requirements, since they are capable of coping with highly time-variant wireless channel ...communication systems is highly de- pendent on ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... cellular systems there are four main methods of multiple access schemes such as FDMA, TDMA, CDMA, and ...of transmission use large number of close spaced carriers that are modulated with low rate ...
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Downlink Space Frequency Preequalization Techniques for TDD MC CDMA Mobile Radio Systems
... conventional equalizers, and the CZF. This occurs because, as can be seen from (21), with single antennas the CZF-EGC weights are real. Thus, we just perform a preequalization am- plitude operation at the ...
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Serial Acquisition Performance of Single and Multi carrier DS CDMA over Nakagami $m$ Fading Channels
... DS-CDMA systems and multicarrier DS-CDMA (MC DS-CDMA) systems, since MC DS-CDMA transmission schemes have been proposed, in order to achieve further ...
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Comparative Study of Different Space Time Coding Schemes for MC CDMA Systems
... cellular systems are being de- signed to support wideband services like high-speed int- ernet access, video and high quality image transmission with the same quality as the fixed ...
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Distributed Resource Allocation Assisted by Intercell Interference Mitigation in Downlink Multicell MC DS CDMA Systems
... practical systems which may have a large number of cells and ...practical systems, since they are fully distributed algorithms based on the intracell CSI ...practical systems, the RAIM-SA algorithm ...
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Blind Modulation Recognition in Wireless MC CDMA Systems Using a Support Vector Machine Classifier
... direct transmission signal but also many reflected signals arrive at the receiver at the same time, which causes Inter-Sym- bol Interference (ISI) leading to a significant degradation in the network ...rate ...
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Out of Band Emission Reduction Technique for OFDM and MC CDMA Systems
... data transmission scheme concept discussing the similarities and differences of MC-CDMA and OFDM air ...for MC waveform is introduced in Section ...
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MAP Channel Estimation Based PIC Receiver for Downlink MC CDMA Systems
... the transmission method for the European radio (DAB) and TV (DVB-T) standard and is used in xDSL systems as ...is CDMA. CDMA makes use of spread spectrum modulation and distinct spreading ...
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How Equalization Techniques Affect the TCP Performance of MC CDMA Systems in Correlated Fading Channels
... Section 6, the quality of service perceived by the final user is investigated in terms of normalized TCP level throughput. This performance figure is defined as the average amount of TCP level data bits that is correctly ...
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Channel Estimation for Powerline MC CDMA System
... up-link MC-CDMA systems is mathematically equivalent to that in multiple input multi- ple output (MIMO) orthogonal frequency division multi- plexing (OFDM) systems ...up-link ...
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Generic MMSE Decision Directed Channel Estimation for OFDM and MC CDMA
... a MC-CDMA system having a sufficiently long spreading code, the NMSE value of Equation (5) does not exist, since the variance of the resultant Cauchy distributed variable associated with the ratio of two ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... Example of an adaptation cycle using IRIS: At this point, we assume the availability of a system parameter identified as the channel map (CM). Fig. 7 illustrates a conceptual reconfigura- tion process explaining the ...
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PERFORMANCE ANALYSIS OF WAVELET PACKET BASED MC-CDMA WITH THE MC-CDMA SYSTEM USING HHT TRANSFORM WITH DIFFERENT NO OF USER
... Fig 3.3. Shows the bit error rate versus SNR curves for different users of HHT based MC-CDMA scheme. It can be noted from the figure that as the number of users increases the bit error rate decreases in the ...
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Performance Evaluations and Comparisons of Several LDPC Coded MC-FH-CDMA Systems
... (MC-FH) CDMA systems is ...coded MC-FH-CDMA systems, based on these constructions, are evaluated and compared in a frequency-selective slowly Rayleigh fading ...coded ...
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Blind ICA detection based on second order cone programming for MC CDMA systems
... communication systems due to its high data ...in MC-CDMA systems is that they are extremely sensitive to the complex channel ...the MC-CDMA system, which is modulated by downlink ...
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Performance Evaluation of MC CDMA for Fixed WiMAX with Equalization
... and CDMA. The difference between traditional DS-CDMA and MC-CDMA is that in MC-CDMA frequency spectrum is spread in frequency domain whereas in DS-CDMA spectrum band is ...
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