Wideband Troposcatter Radio Channel Simulator

Fitting, R.

doi:10.1109/tcom.1967.1089626

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…The troposcatter channel fading correlation has been well studied under cooperative occasions, e.g. communication both theoretically [5][6][7][8][9][10][11][12] and experimentally [13][14][15][16][17][18][19][20][21][22]. Troposcatter communication is marred by channel fading, while diversity receptions provide additional independent channels to relieve fading deterioration, and consequently promote the communications reliability and data rate efficiently.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, fading correlation in these cooperative occasions is studied to determine the proper spacing to achieve the diversities decorrelation. Typical reception diversities include space, angle, frequency, time and polarisation: frequency correlation of troposcatter is simulated in [5], where several fading channels are used and have reasonably good agreement with an actual frequency division multiplexed-frequency modulated system, but the applicability is restricted by the lack of theoretical conclusions. A fast method for tropospheric delay predictions is discussed in [6] and illustrated by vertical antenna diversity, but it mainly focuses on the refractivity profiles.…”

Section: Introductionmentioning

confidence: 99%

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Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Wang¹,

Wang²,

Wang³

et al. 2017

IET Microwaves, Antennas & Propagation

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Microwave over‐the‐horizon (OTH) propagation through troposcatter is a valuable candidate for remote targets detection. Array antenna is promising to handle the contradiction between real‐time wide spatial coverage requirement and high antenna gain to capture weak scattering signal. The detection tactics and performance of array receiving systems are significantly affected by the fading correlation between array antennas, but there is no analytical study which considers the fading correlation in troposcatter passive sensing environments for uncooperative targets. In this study, an analytical method based on a scattering transfer function is proposed to derive the channel fading correlation, and the result is a function of transmitter deviation and spatial, temporal, frequency, angular separations of receiving array antennas in uncooperative troposcatter circumstances. In addition, the OTH troposcatter array receiving signal model is derived by exploiting the fading correlation to form the covariance structure of the received array signal, adding up with the signal transmission loss. Existing experimental results validate the derived fading correlations, and the simulation results validate the OTH passive detection performance based on the provided signal model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Wang¹,

Wang²,

Wang³

et al. 2017

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…Over the past few decades, efforts have resulted in several designs and implementation of real time simulators. Early efforts were based on analog components [1][2][3][4]. The development of real time simulator starts in 1973 when in [1] they developed the first Rayleigh based channel simulator.…”

Section: Introductionmentioning

confidence: 99%

Auto-Scale Factor Circuit Realisation for MIMO Hardware Simulator

Habib¹,

Zaharia²,

Zein³

2013

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A hardware simulator reproduces the behavior of the radio propagation channel, thus making it possible to test “on table” the mobile radio equipments. The simulator can be used for LTE and WLAN 802.11ac applications, in indoor and outdoor environments. In this paper, the input signals parameters and the relative power of the impulse responses are related to the relative error and SNR of the output signals. After analyzing the influence of these parameters on the output error and SNR, an algorithm based on an Auto-Scale Factor (ASF) is analyzed in details to improve the precision of the output signals of the hardware simulator digital block architecture. Moreover, the circuit needed for the validation of this algorithm has been introduced, verified and realized. It is shown that this solution increases the output SNR if the relative powers of the impulse responses are attenuated. The new architecture of the digital block is presented and implemented on a Xilinx Virtex-IV FPGA. The occupation on the FPGA and the accuracy of the architecture are analyzed.

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“…Over the past few decades, efforts have resulted in several designs and implementation of real time simulators. Early efforts were based on analog components http://jwcn.eurasipjournals.com/content/2012/1/359 [25][26][27][28]. The development of real time simulator starts in 1973 when [25] developed the first Rayleigh based channel simulator.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of real time wideband channel simulator

Akram

Sheikh

2012

J Wireless Com Network

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This paper describes the design and implementation of a DSP based real time wideband channel simulator. The simulator implementation uses a floating point (TMS320C6713) and a fixed point (TMS320C6416) DSPs.The simulator has 8 taps and baseband bandwidth of 20 MHz. It has flexibility to generate several channel models under varied environmental conditions. To validate the functionality of the simulator, the baseband data is applied to the simulator input and its output is statistically analyzed and the results are compared with those predicted analytically.

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Wideband Troposcatter Radio Channel Simulator

Cited by 7 publications

References 4 publications

Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Fading correlation modelling for troposcatter microwave propagation in array antenna detection applications

Auto-Scale Factor Circuit Realisation for MIMO Hardware Simulator

Design and implementation of real time wideband channel simulator

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