Focused Arrays Beamforming

Mazurenko, O. V.; Yakornov, Yevhenii

doi:10.5772/16980

Cited by 2 publications

(8 citation statements)

References 20 publications

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“…This three-dimensional spatial multiplexing method operating principle based on spatial channelizing features that provided by specialized FAA [6], that uses "optical" focusing and signal division by it electromagnetic wave front curvature processes for signals transmitting and receiving respectively. These features fulfill all requirements for controlled formation of signal power spatial distribution (SPSD) in all three dimensions of spherical coordinates.…”

Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

“…In case, when transmit and receive channels are located in the same frequency band and in the same time interval, then MS must use FAA as BS. This spatial multiplexer channels distribution is described by mathematical apparatus of FAA SPSD synthesizing which takes into account location (spatial distribution) and signals amplitude-phase distributions of FAA elements that presented in details at [6].…”

Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

“…According to [6], practical realization of spatial signal division by distance for narrowband signals is possible in millimeter waves range. For such principle realization in lower frequency band with all criteria of necessary spatial channels orthogonality fulfillment need to change transmitting signal "sinusoidal" carrier for ultra wideband impulse.…”

Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

“…If criteria mentioned above are considered from optimal filtration theory viewpoint [5], then the necessary solution based on spatial matched filtration (SMF) can be implemented by means of focused antenna arrays (FAA) [6] which use "optical" focusing and signal division by it electromagnetic wave front curvature processes. Also there is a solution based on spatial correlation signal processing (SCSP) [7] that uses orthogonality of spreading sequences and their set reusing possibility by cyclic shift [8], and special synchronization procedures that depend on distance between MS and BS.…”

Section: Introductionmentioning

confidence: 99%

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Principles of Three Dimensional Spatial Multiplexing in Wireless Communications

Mazurenko¹,

Yakornov²

2013

Information and Telecommunication Sciences

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This paper presents a comparative analysis of the multiplexing principles, allowing increasing the technical efficiency of radio resource usage based on the three-dimensional signals spatial separation in a spherical coordinate system. These methods allow creating spatial multichannel communications between certain points (areas) of the space through the radiators and signal processing system of wireless base station. Three-dimensional spatial selectivity in spatial matched filtration is provided by the physical processes of the focusing and the differentiation signals by their front curvature, and in the spatial correlation signal processing-by orthogonality of spreading sequences, their reusing by cyclic shift and synchronization, depending on the distance from the base to the mobile station.

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Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

Section: Multiplexing Based On Spatial Matched Filtrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Principles of Three Dimensional Spatial Multiplexing in Wireless Communications

Mazurenko¹,

Yakornov²

2013

Information and Telecommunication Sciences

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“…As a matter of fact, "focusing in near-zone without high gain in far-zone" has various applications in addition to wireless power transmission, such as microwave-induced hyperthermia, microwave remote sensing, RFID, and three-dimensional spatial division multiplexing [4]. Arecibo reflector antennas [5] and quasi-optical lens antennas [6] were demonstrated capable of focusing fields as optical lens.…”

Section: Introductionmentioning

confidence: 99%

Retro-Directive Beamforming Versus Retro-Reflective Beamforming With Applications in Wireless Power Transmission

Wang¹,

Ruan²,

Lu³

2016

PIER

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Abstract-This paper studies the difference between retro-directive beamforming technique and retroreflective beamforming technique in the context of wireless power transmission applications. In all of our studies, a wireless power receiver broadcasts continuous-wave pilot signal; the wireless power transmitter receives and analyzes the pilot signal; finally, the wireless power transmitter transmits continuous-wave power with phase profile conjugate to that of the received pilot signal. Our study demonstrates that a linear equi-spaced antenna array configuration employed by the wireless power transmitter behaves as a retro-directive beamformer when the wireless power receiver resides in the far-zone of the wireless power transmitter, whereas it behaves as a retro-reflective beamformer when the wireless power receiver is not in the far-zone. This paper further investigates two types of array configurations other than linear equi-spaced array when the wireless power transmitter behaves as a retro-reflective beamformer. One is a V-shaped array, which is obtained by deforming the linear equi-spaced array to a "V" shape. The other is termed "perturbed array:" on the basis of linear equi-spaced array, all the elements' locations are perturbed randomly. It is particularly interesting to compare the equi-spaced array and perturbed array. When the wireless power receiver resides 5 or 6 wavelengths away, a 6-element equi-spaced array and a 6-element perturbed array produce the same power level at the near-zone focal point, but the maximum far-zone gain associated with the perturbed array is 1 dB lower than the equi-spaced array. All the conclusions drawn in this paper are supported by numerical results as well as experimental results.

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Focused Arrays Beamforming

Cited by 2 publications

References 20 publications

Principles of Three Dimensional Spatial Multiplexing in Wireless Communications

Principles of Three Dimensional Spatial Multiplexing in Wireless Communications

Retro-Directive Beamforming Versus Retro-Reflective Beamforming With Applications in Wireless Power Transmission

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