frequency selective fading CDMA channels
Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... Figure 5 shows the performance improvement achieved by using PIC with suitable combining schemes under frequency-selective fading channels using identical simula- tion parameters as in Fig. 4. ...
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Equivalence of Linear MMSE Detection in DS CDMA and MC CDMA Systems over Time and Frequency Selective Channels
... of CDMA systems as well as their robustness against ...for CDMA sys- tems. Three important CDMA systems are DS-CDMA, MC- CDMA, and the hybrid ...
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A Combined Antenna Arrays and Reverse Link Synchronous DS CDMA System over Frequency Selective Fading Channels with Power Control Error
... In this paper, we presented an improved AA, in which RLSTT is incorporated to e ff ectively make better an estimation of co- variance matrices at a beamformer-RAKE receiver, and inves- tigated the user capacity and the ...
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Effective Needs of Space-Time-Frequency Coding in MIMO-OFDM Communication over Frequency Selective Fading Channels
... through frequency-selective fading channels" such as the performance and capacity of space time block coded (STBC) multi-user CDMA system over Rayleigh fading channel ...
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Performance Analysis of MC CDMA over Different Fading Channels
... over CDMA , that has only single carrier is that the symbol rate is less than the chip rate, so transmission can be quasi-synchronised ...by frequency selective ...
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Practical multiuser detection algorithms for CDMA
... Latva-aho and Lilleberg in [51] investigate Parallel interference cancellation (PIC) based channel parameter estimators for frequency selective fading channels for the uplink in code di[r] ...
101
Spreading Code Assignment Strategies for MIMO CDMA Systems Operating in Frequency Selective Channels
... Like CDMA systems, MIMO-CDMA systems encounter MAI as well as self interference (SI) due to the fact that autocorrelation and cross correlation properties of the employed spreading codes are not perfect ...
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Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control
... Evaluation of the system capacity degradation due to PCE is the main focus of this paper. To investigate the over- all effect of imperfect power control, PCE is considered in terms of the standard deviation of the ...
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Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels
... communications channels typically exhibit time vari- ant channel quality fluctuations [1] and hence conventional fixed-mode modems suffer from bursts of transmission errors, even if the system was designed for ...
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Serial Acquisition of DS CDMA Signals in Multipath Fading Mobile Channels
... Abstract—This paper compares the mean acquisition time (MAT) performance of two serial search acquisition schemes over frequency-selective multipath Rayleigh fading channels. Both the ...
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Performance of Asynchronous MC CDMA Systems with Maximal Ratio Combining in Frequency Selective Fading Channels
... correlated fading subcarriers with possibly di ff erent fading ...(i.i.d.) fading among the channel paths [10], or independent fading among the subcarriers [11, ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... [300] M. J. Juntti, T. Schl¨osser, and J. O. Lilleberg, “Genetic algorithms for multiuser detection in synchronous CDMA,” in IEEE International Symposium on Information Theory – ISIT’97, (Ulm, Germany), p. 492, ...
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Title: High Speed OFDM Implementation in FPGA
... Abstract— FPGA is one of the efficient & economic way to implement the circuit. Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation technique. OFDM provides high bandwidth efficiency ...
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International Journal of Emerging Technology and Advanced Engineering
... Division Frequency Multiplexing as an emerging technology for high data ...for frequency-selective channels and high information rates [1], and ...a frequency-specific wide-band channel ...
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Performance Analysis of the Blind Minimum Output Variance Estimator for Carrier Frequency Offset in OFDM Systems
... previous work [13], we proposed a new blind estimation al- gorithm which yields high bandwidth efficiency and high accuracy based on the minimum output variance (MOV). In [13], the performance of the MOV estimator is ...
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An Extensive Review on STBC for MIMO OFDM System
... Orthogonal Frequency Division Multiplexing (OFDM) has become the popular modulation technique in high speed wireless ...Orthogonal Frequency Division Multiplexing (OFDM). Orthogonal Frequency ...
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Fuzzy MIMO detector for MC CDMA systems with carrier frequency offset over multipath fading channels
... Moreover, to acquire spatial diversity, this study devel- ops a robust MIMO fuzzy MOE detector to suppress MAI, to prevent signal cancellation caused by the CFO ef- fect, and to acquire the multipath and spatial ...
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Accurate BER of MC DS CDMA over Rayleigh Fading Channels
... We consider K asynchronous MC-DS-CDMA users in the system having all the same number of subcarriers U and spreading factor L. The average power received from each user is also assumed to be the same. Consequently, ...
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Exact BER Analysis of OFDM Systems Communicating over Frequency Selective Fading Channels Subjected to Carrier Frequency Offset
... Figure 2 illustrates the achievable average BER versus the normalized CFO performance in conjunction with various numbers of OFDM subcarriers in a BSPK-modulated OFDM system in the context of ...
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Adaptive antennas at the mobile and base stations in an OFDM/TDMA system
... To determine , we use a statistical approach since it al- lows easier control of channel parameters such as delay spread. It is assumed that paths with different delays are uncorrelated (i.e., uncorrelated scattering) ...
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