Doppler Shift and UWA Channel Multipath
On the Consistency of Non-Stationary Multipath Fading Channels with Respect to the Average Doppler Shift and the Doppler Spread
... stationary multipath fading channels. We introduce conditions under which a channel model is consistent ...average Doppler shift and the Doppler ...by channel models based on an ...
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Index Terms: Diversity, OFDM, Doppler Shift, Rake receiver, Multipath Propagation.
... severe channel conditions - for example, attenuation of high frequencies in a long copper wire, narrowband interference and frequency-selective fading due to multipath - without complex equalization ...
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Doppler-shift estimation of flat underwater channel using data-aided least-square approach
... dada-aided Doppler estimation method for underwater acoustic communica- ...for Doppler estimation as well as channel equali- ...the channel has been equalized and consider only flat-fading ...
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Doppler Shift Time Expansion Resolution and Spectral Performance in Wideband Real-Time RF Channel Emulators
... Keywords: Channel Emulator; Doppler; Propagation Channel ...A channel emulator, usually unable to get access to the transceiver baseband, must process the RF signal over a wideband spectrum ...
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Doppler Shift Estimation for TETRA Cellular Networks
... Key words: TETRA (Terrestrial Trunked Radio), Doppler shift, I. Introduction The speed of a mobile terminal in wireless communication networks is an important piece of information that can improve system ...
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Gaussian Channel Model for Mobile Multipath Environment
... Within the simulations, the samples of the complex sig- nals were generated with a sampling period equal to 1 mil- lisecond for three antenna beams. The maximum Doppler frequency f d was set equal to 50 Hz. The ...
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Doppler Shift Estimation and Jamming Detection for Cellular Networks
... including channel estimation, adaptive reception, anti-jamming and handover ...the channel Doppler shift seen by BTS, using the measured received signals at base ...based Doppler ...
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Array imperfection calibration for wireless channel multipath characterisation
... of multipath, each signal copy will experience differences in attenuation, delay, and phase shift as it travels from the transmitter to the re- ...phase shift of each propagation path, signals ...
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Estimation of Delay and Doppler shift of Weighted OFDM of Radar Targets
... and Doppler shift estimation of moving targets of OFDM based radar system by utilizing Maximum Likelihood Estimation(MLE) strategy has been ...range Doppler coupling issues can be overcome for radar ...
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Channel Tracking Using Particle Filtering in Unresolvable Multipath Environments
... Rayleigh channel with the same average power on each path and a maximum Doppler frequency of 19 Hz corresponding to a mobile speed of 10 Km/h for a carrier frequency of 2 ...the channel delays can be ...
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A Robust Joint Estimation Method of Time Delay and Doppler Frequency Shift
... *Corresponding author Keywords: Alpha-stable distribution, Cyclic ambiguity function, Doppler frequency shift, Sigmoid transform, Time delay. Abstract. In this paper, a novel concept, the Sigmoid transform ...
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Doppler Shift Estimation and Compensation in High Speed MIMO-OFDM VANETs
... The findings shown in Figure 9 reveal that the 2 × 2 MIMO configurations based BEM is the most superior compared to the other tradition- al methods. This is attributed to the fact that EVM, LMS and iterative LCR have low ...
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UNDERWATER NAVIGATION SYSTEM BASED ON DOPPLER SHIFT MEASUREMENTS AND ERROR ESTIMATIONS
... OPERATING PRINCIPLE OF THE SYSTEM The system operated in the geometrical arrangement shown in Fig. 1. The transmitter was fixed to a moving underwater object and emitted a continuous sine-wave sound signal at frequency f ...
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Performance Analysis of WiMAX Network For Multipath Fading Channel In Mobile WiMAX
... Input Mixing Matrix: This part models correlation between input signals if multiple transmitting antennas are used. Tapped Delay Line Matrix: This part models the multipath fading of the channel. The ...
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Comparison of Bit Error Rate for Multipath Fading Channel in DS CDMA
... various multipath fading channels, the criterion is comparison of the variation of BER for different ...AWGN channel found better as compared to Rayleigh and Rician fading channel over Binary Phase ...
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Analysis of Multipath Channel Reduction Models for the Testing of Realistic GNSS Receivers
... and Doppler dimensions of the multipaths before performing their ...and Doppler characteristics with success but its complexity led to long computation times for scenarios with more than approximately 100 ...
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Multipath channel identification by using global optimization in ambiguity function domain
... and Doppler resolutions, respec- ...each multipath component that is in the detected cluster, PSO is used to conduct fitting in delay–Doppler ...each multipath component in the cluster, effect ...
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Doppler. Doppler. Doppler shift. Doppler Frequency. Doppler shift. Doppler shift. Chapter 19
... • Defined as The f shift created between the transmitted and received f by an interface moving with velocity at an angle to the sound source.. • It is a low f that rides or uses as a [r] ...
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Student Exploration: Doppler Shift
... Question: What causes the Doppler shift? 1. Observe: With the car’s velocity ( v source ) set to 0 m/s, click Play. Notice the sound waves moving away from the car in all directions. A. Increase the ...
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Doppler shift estimation of MIMO-OFDM systems based on auto-correlation function of channel estimate
... This experiment investigates the estimation performance with different LOS DSs. We have analyzed the possible performance degradation due to inadequate points during one period of the [r] ...
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