Time reversal techniques for wireless communications

Kyritsi, P.; Papanicolaou, George; Eggers, Patrick Claus F.; Oprea, A.

doi:10.1109/vetecf.2004.1399917

Cited by 36 publications

(31 citation statements)

References 6 publications

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“…These arrays are formed by removing some elements from 10-element linear array. The kept elements in five selected arrays are (1, 10), (1,5,10), (1,4,7,10), (1,3,6,8,10) and all elements, respectively. The spatial energy focusing extents of the five arrays in NLOS (User 1) and LOS (User 2) cases are shown in Figs.…”

Section: Results For Linear Array With Fixed Array Aperturementioning

confidence: 99%

“…Recently, time reversal (TR) UWB communication has received much attention because the propagation of TR UWB electromagnetic waves can obtain spatial focusing and time compression characteristics simultaneously [7,8]. This unique property results in a big potential for improving the performances of Inter-Symbol Interference (ISI) and Co-Channel Interference (CCI) of the traditional UWB communication [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Spatial Focusing Characteristics of Time Reversal Uwb Pulse Transmission With Different Antenna Arrays

Xiao¹,

Chen²,

Liu³

et al. 2008

PIER B

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Abstract-Spatial focusing characteristics of time reversal (TR) electromagnetic waves are studied in this paper. Different antenna arrays are used as a TR mirror and their elements are arranged in one and two dimensions in the horizontal plane. The focused energy density around initial source location is investigated in non-line-ofsight (NLOS) and line-of-sight (LOS) cases, respectively. The results demonstrated that, roughly speaking, under the case of fixed space between two adjacent elements, the more the number of the array elements, the stronger the focused average energy density. However, in the case of fixed TR mirror array aperture, some abnormal phenomena are observed when additional elements are inset into the initial one.

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Section: Results For Linear Array With Fixed Array Aperturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial Focusing Characteristics of Time Reversal Uwb Pulse Transmission With Different Antenna Arrays

Xiao¹,

Chen²,

Liu³

et al. 2008

PIER B

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“…Recently, a novel technique, i.e., Time Reversal (TR) mirror, is introduced into UWB communication system to further improve performance [10][11][12][13]. In TR UWB communication, wireless signal transmission includes two steps: (I) the field radiation by source is initially recorded at a transducer antenna; then (II) it is time-reversed and retransmitted by the same antenna acting as a TR mirror.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on Time- Reversal Electromagnetic Wave for Indoor Ultra-Wideband Signal Transmission

Xiao¹,

Chen²,

Wang³

et al. 2007

PIER

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Abstract-In this paper, the propagation of ultra-wideband (UWB) pulse based on time reversal (TR) technique is studied by finitedifferent time-domain method in indoor environment.Time compression and spatial focusing of TR waveform are simulated and the propagation of multi-waveform string is analyzed. Then UWB wireless signal transmission based on TR concept is studied numerically. The studied results indicate that the UWB communication based on TR technique can obtain better Inter-Symbol Interference (ISI) and CoChannel Interference (CCI) performance than traditional one because of its unique property.

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“…In this paper, we consider a cooperative transmission strategy based on a technique called time-reversal communication (TRC), which can be regarded as generalization of beamforming. Various signal processing techniques based on time-reversal (TR) processing have been proposed and studied previously for many applications, including acoustical imaging [11], electromagnetic imaging [12], underwater acoustic communication [13], and wireless communication channels [14][15][16]. In two recent publications [17,18], the application of TRC to cooperative communication in wireless networks has been introduced and studied by several of the authors.…”

Section: Introductionmentioning

confidence: 99%

Performance of Cooperative Time-Reversal Communication in a Mobile Wireless Environment

Barton

Huang

et al. 2007

International Journal of Distributed Sensor Networks

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In this paper, we study the performance of a technique called time reversal for cooperative communication in a mobile wireless environment. To put the work in context, a brief introduction to timereversal communication (TRC) in general and cooperative TRC in particular is presented. Performance of a proposed cooperative TRC scheme is evaluated numerically via a simulated indoor environment containing multiple wireless communication nodes. We characterize the behavior of the peak power received at a target node as a function of the number of cooperating transmitting nodes and as a function of the distance of the target from its predicted location within the simulated environment.The results demonstrate that the performance of cooperative TRC is less sensitive to uncertainty in the target position than might be expected from standard assumptions regarding the relationship between signal wavelength and spatial channel correlation in a complex multipath environment.

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Time reversal techniques for wireless communications

Cited by 36 publications

References 6 publications

Spatial Focusing Characteristics of Time Reversal Uwb Pulse Transmission With Different Antenna Arrays

Spatial Focusing Characteristics of Time Reversal Uwb Pulse Transmission With Different Antenna Arrays

A Numerical Study on Time- Reversal Electromagnetic Wave for Indoor Ultra-Wideband Signal Transmission

Performance of Cooperative Time-Reversal Communication in a Mobile Wireless Environment

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