time-varying frequency selective fading
Time-Varying Frequency Fading Channel Tracking In OFDM-PLNC System, Using Kalman Filter
... In Fig. 7 we show the average MSE of tracking for different receiver types as the channel dispersion increases. The signal-to-noise ratio of the channel is considered to be 15 dB in this figure. For small normalized ...
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... Rayleigh fading channels, and on time-varying frequency-selective Rayleigh fading channels using rectangular M-QAM and OFDM systems ...Doppler frequency and frame length ...
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Improving Performance and Detection Schemes of Mimo-Ofdm Systems in the Presence of Phase Noise and Doubly-Selective Fading Where Channel is Both Time and Frequency Selective Offia Innocent.S, Udeh Ikemefuna James, Eke J
... and time- selective fading in MIMO-OFDM has been recognized, the exact quantitative effect of the combination of the two has not been well ...fast time-varying fading ...
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Performance of compressive sensing algorithms over time varying frequency selective channel
... over time, if they are appropriately placed over time and ...or time invariant channels, this type of pilot allocation is ...fast fading channel. In Lattice type, pilot tones are inserted ...
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Robust frequency-domain turbo equalization for multiple-input multiple-output (MIMO) wireless communications
... new frequency-domain channel equalization and symbol detection scheme is proposed for multiple-input multiple-output (MIMO) single carrier broadband wireless sys- tems in the presence of severely ...
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Bit Error Rate Analysis of OFDM System with Channel Estimation Error in Rayleigh Fading Channels
... Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation scheme that maximizes the data transmission rate for a given bandwidth ...a frequency selective channel into many ...
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3.5.1 CORRELATION MODELS FOR FREQUENCY SELECTIVE FADING
... In this chapter we develop sampled representations for the time-varying channel h(t, τ ). The motivation for such representations is that channel modeling independent of the signal space is irrelevant from ...
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Deterministic Modeling and Long Range Prediction of Fast Fading Channels with Applications to Mobile Radio Systems
... is time-variant, as we experience in wireless communication ...for time variant channels, to be adaptive to the time variations in the channel ...slowly varying channels efficiently, but their ...
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Timing and Integer Frequency Offset Estimation for DLMT System over Time Varying Rayleigh Fading Channel
... carrier frequency offset (ICFO) estimation algorithm for OFDM systems with residual timing offset (TO) over frequency selective fading ...
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On Channel Estimation for Analog Network Coding in a Frequency Selective Fading Channel
... the time-varying nature of the direct link is taken into consideration, and the outage regions of various PNC schemes are theoretically analyzed, and, then, the best combined strategies are derived in terms ...
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Orthogonal frequency division multiplex synchronization techniques for frequency selective fading channels
... joint time- and frequency-synchronization acquisition algorithm for the down- link of OFDM ...a time-dispersive Rayleigh fading WATM channel has been shown to be very close to the perfectly ...
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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 [1], a frequency selective (FS) channel is commuted into an accumulation of flat fading channels, which can be indemnified by simply ...
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Identification of LOS in Time Varying, Frequency Selective Radio Channels
... that fading channel amplitudes of narrowband systems exhibit Ricean distribution under LOS transmission, the comparison of the theoretical distribution with the observed one gives an idea about LOS/NLOS status of ...
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Orthogonal Frequency Division Multiplexing: Issues and Applications
... frequency spacing between adjacent subcarriers F = W‟= 1/T‟ p guarantees the orthogonality of sub-channel signals, i.e. complete elimination of mutual interference between the MC sub- channels. This version of MC ...
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Distributed Space Time Block Code over Mixed Rayleigh and Rician Frequency Selective Fading Channels
... Alamouti’s scheme (see, e.g., [1, 11]) to D . This enables the decoupling detection of two data blocks at the destination and achieves a rate of 1/2. To achieve the same goal in the considered scenario, the source with ...
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Successive interference cancellation schemes for time-reversal space-time block codes
... over time dispersive multipath ...the time division synchronous code divi- sion multiple access (TD-SCDMA) system, which has been adopted by the Third Generation Partnership Project as the low chip rate ...
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Implementation of Transmit Diversity Schemes
... The bit error rate (BER) performance SF-OFDM transmitter diversity system for 2x1, 2x2 are verified by simulation. The simulation system used OFDM with cyclic prefix length set in accord with 3GPP standards where the ...
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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 into a ...
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Web Applications Testing using White Box Method
... coherence time. It is used to estimate the random phase shift of the fading channel and train the decision to adjust the received signal with phase ...
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Eigenstructures of MIMO Fading Channel Correlation Matrices and Optimum Linear Precoding Designs for Maximum Ergodic Capacity
... of frequency-flat and frequency- selective fading channels from an algebraic viewpoint and develop the corresponding linear precoding structures to maximize their ergodic ...of ...
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