frequency-flat fading channels
Eigenstructures of MIMO Fading Channel Correlation Matrices and Optimum Linear Precoding Designs for Maximum Ergodic Capacity
... of frequency-flat fading ...of frequency-selective fad- ing ...a frequency-selective fading channel with L effective paths in terms of channel correlation ...a frequency- ...
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Optimizing time and space MIMO antenna system for frequency selective fading channels
... for frequency selective and frequency flat fading channels in the presence of ...the flat fading ...with flat and selective fading with CCI is possible by ...
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On Channel Estimation of OFDM BPSK and QPSK over Generalized Alpha Mu Fading Distribution
... in frequency selective has different approach then compared with flat fading ...in frequency selective fading environment has been presented in ...selective channels was ...
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MIMO-OFDM System in Rayleigh Fadding Channel Maninder Singh, Dr. Hardeep Singh Saini
... Rayleigh fading and fades are independent and identically ...a frequency-selective fading channel with a large bandwidth into a number of flat fading ...
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Performance of an adaptive successive serial parallel CDMA cancellation scheme in flat Rayleigh fading channels
... We are concerned here with CDMA communications in cel- lular radio where there is a limit on the maximum attainable ca- pacity on the reverse link [5]. This is because of the uncancelled intercellular interference and ...
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BER Performance of 2x2 and 4x4 Transmit Diversity MIMO in Downlink LTE
... configuration. Flat fading, EPA, EVA, ETU channels are supported and at the receiver space frequency block coding is coupled with soft decision demodulation and scrambling [12,13] is ...
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1. A robust and efficient channel estimation scheme for ofdm systems in frequency selective fading channels
... orthogonal frequency division multiplexing (OFDM) systems, a frequency selective (FS) channel is commuted into an accumulation of flat fading channels, which can be indemnified by ...
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Cooperative Communications over Flat Fading Channels with Carrier Offsets: A Double-Differential Modulation Approach
... orthogonal channels for transmission ...the frequency-division multiplexing (FDMA) or the code- division multiplexing (CDMA) schemes, the source and the relay can transmit ...
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Performance comparison of multiuser detectors with channel estimation for flat Rayleigh fading CDMA channels
... Code Division Multiple Access (CDMA) is a promising technique for mobile communication systems. The major advantage of CDMA compared with Frequency Division Multiple Access (FDMA) and Time Division Multiple Access ...
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Performance Analysis of Space Time Block Codes in Flat Fading MIMO Channels with Offsets
... a frequency o ff set between the transmitter and receiver, which could arrive due to oscillator instabilities, or relative motion between the two, however, has the poten- tial to destroy this orthogonality and ...
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Implementation of Transmit Diversity Schemes
... or flat channels only the constant channel gain between adjacent subcarriers ...the frequency selective channel is converted to frequency flat fading channel by using OFDM ...
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Dual Tree Wavelet based OFDM: A Performance Calculation of Bit Error Rate
... In this section, the OFDM-DT-CWT system behavior is studied through MATLAB simulink. In addition, comparisons between the OFDM-FFT[22], OFDM-DWT[5] systems and the proposed OFDM-DT-CWT are done in terms of BER under ...
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Blind spectrum sensing for cognitive radio over time variant multipath flat fading channels
... many frequency bands is very low ...scarce frequency resources and under-utilization of spectrum restricts the development of wireless commu- nication ...allocated frequency bands when these bands ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... Nakagami-m flat fading chan- nel and N channel coefficients are considered as uncor- related zero-mean complex Gaussian random variables with unit ...
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Effect of cyclic prefix in BER improvement in MIMO-OFDM system
... Orthogonal Frequency Division Multiplexing (OFDM) is a special form of multicarrier modulation scheme, which divides the entire frequency selective fading channel into many orthogonal narrow band ...
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Performance Comparison of FFT, Discrete Wavelet Packet Transform (DWPT) for MIMO-OFDM Systems
... orthogonal frequency division multiplexing (OFDM) to ensure spatial diversity gain and/or to increase spectral ...Rayleigh fading channel for different values of Quadrature Amplitude Modulation (QAM) points ...
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Performance Comparison of Linear and Decision Feedback Equalizers in Flat and Frequency Selective Fading Channel
... The basic limitation of a linear equalizer, such as transversal filter, is the poor perform on the channel having spectral nulls. A decision feedback equalizer (DFE) is a nonlinear equalizer that uses previous detector ...
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New Multiple Antennas Method based Energy Detector for Cognitive Radio over Fading Channels
... Nakagami- fading channels with asingle antenna, under ...[12], fading channels can be roughly divided into two types: (1) Large-scale fading due to (a) Path loss and (b) Shadowing, both ...
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A Receiver Structure for Frequency Flat Time Varying Rayleigh Channels and Performance Analysis
... for frequency-flat time-vary- ing Rayleigh channels, consisting of a receiver front-end followed by a Maximum A-Posteriori (MAP) ...slow- fading channels shows that it is optimal for ...
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Web Applications Testing using White Box Method
... (AWGN, flat fading and frequency selective fading channels), channel estimation, adaptive equalization, and ...Rayleigh fading channel. For frequency selective ...
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