A Real Time UWB MIMO System With Programmable Transmit Waveforms: Architecture, Algorithms and Demonstrations

Song, Yu; Guo, Terry N.; Qiu, Robert C.; Wicks, Mike

doi:10.1109/tap.2012.2201107

Cited by 13 publications

(5 citation statements)

References 29 publications

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“…Then each signal flow on the corresponding antenna can be detected by a decision threshold, thus omitting the complex channel equalization process. [15]…”

Section: Wideband Data Linksmentioning

confidence: 99%

“…[13] With inherent spatialtemporal focusing property, TR can compress channel delay spread and alleviate inter-symbol interference which promotes itself as an ideal candidate in wideband or ultra-wideband communication. [14,15] Moreover, TR is a perfect paradigm for green wireless communication by exploiting the multi-path propagation from the surrounding environment. [16] Referring to the channels in the TR MIMO system, they often default for statistical uncorrelation.…”

Section: Introductionmentioning

confidence: 99%

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Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Yang¹,

Wang²,

Ding³

2016

Chinese Phys. B

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Utilizing channel reciprocity, time reversal (TR) technique increases the signal-to-noise ratio (SNR) at the receiver with very low transmitter complexity in complex multipath environment. Present research works about TR multiple-input multiple-output (MIMO) communication all focus on the system implementation and network building. The aim of this work is to analyze the influence of antenna coupling on the capacity of wideband TR MIMO system, which is a realistic question in designing a practical communication system. It turns out that antenna coupling stabilizes the capacity in a small variation range with statistical wideband channel response. Meanwhile, antenna coupling only causes a slight detriment to the channel capacity in a wideband TR MIMO system. Comparatively, uncorrelated stochastic channels without coupling exhibit a wider range of random capacity distribution which greatly depends on the statistical channel. The conclusions drawn from information difference entropy theory provide a guideline for designing better high-performance wideband TR MIMO communication systems.

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“…Then each signal flow on the corresponding antenna can be detected by a decision threshold, thus omitting the complex channel equalization process. [15]…”

Section: Wideband Data Linksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Yang¹,

Wang²,

Ding³

2016

Chinese Phys. B

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“…UWB MIMO systems also provide enhanced channel capacity compared with narrowband systems [22]. Several UWB MIMO antennas are proposed by different researchers in [23][24][25]. However, electromagnetic coupling in radiating elements degrades the performance [26,27] of MIMO systems significantly.…”

Section: Introductionmentioning

confidence: 99%

Band Notched Uwb Mimo/Diversity Antenna Design With Inductance Boosted Compact Ebg Structures

Jaglan¹,

Dalal²,

Gupta³

et al. 2020

PIER C

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A triple band notch MIMO/Diversity antenna using Inductance Boosted Compact Electromagnetic Band Gap (IB-CEBG) cells is presented in this paper. For obtaining compactness in the conventional EBG cell, spiral shaped defects are introduced. The proposed antenna obtains triple band notches in WiMAX (3.3-3.6 GHz), WLAN (5-6 GHz), and the X-band satellite communication (7.2-8.4 GHz) bands. IB-CEBG cells exhibits miniaturization of approximately 46% for WiMAX band, 50% for WLAN band and 48% for X-band Satellite communication band, compared to conventional EBG cells. To enhance the isolation among all four compact UWB monopoles, rectangular slots in the ground plane and parasitic decoupling arrangement are utilised. Further, a stepped structure with an angular separation of 90 • is incorporated with individual monopoles to reduce mutual coupling effects. Stepped structure also helps in the better impedance matching by incrementing the path length. The results show that the magnitude of transmission coefficient is greater than 15 dB in between the ports of proposed antenna elements. Envelope Correlation Coefficient is less than 0.5, which lies in tolerable limits for Ultra-Wide band (UWB) frequency range. It has been noticed that notched frequency is dependent on IB-CEBG cell parameters. The proposed antenna is fabricated using an FR-4 substrate with overall dimensions of 58 × 90 × 1.6 mm 3 .

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“…The MIMO technology used in UWB will provide an increase in channel capacity over that used in a narrowband system [22]. UWB MIMO system behaviour is considered in [23][24][25]. However, when MIMO systems are employed for compact portable devices, the high electromagnetic coupling among antennas affects system behaviour significantly [26,27].…”

Section: Introductionmentioning

confidence: 99%

Triple Band Notched Dg-Cebg Structure Based Uwb Mimo/Diversity Antenna

Jaglan¹,

Gupta²,

Kanaujia³

et al. 2018

PIER C

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Abstract-A MIMO/Diversity antenna with triple notch characteristics is proposed in this article. The proposed antenna has triple notches in the WiMAX band (3.3-3.6 GHz), WLAN band (5-6 GHz), and X-band satellite communication (7.2-8.4 GHz) band. Defected Ground Compact Electromagnetic Band Gap (DG-CEBG) is a design used to accomplish band notches. Defected ground planes are utilised so as to achieve compactness in conventional EBG structures. The proposed WiMAX band, WLAN band, and X-band satellite communication band DG-CEBG structures show a compactness of around 46%, 50%, and 48%, respectively, over a conventional EBG structure. In these structures, decoupling strips and a slotted ground plane are used to enhance the isolation between two closely spaced UWB monopoles. The individual monopoles are 90 • angularly separated with a stepped structure which helps to reduce mutual coupling and also contributes towards impedance matching by increasing the current path length. |S 21 | or mutual coupling is found to be less than 15 dB over the whole UWB frequency range. The Envelope Correlation Coefficient (≤ 0.5) is within the acceptable limits over the whole UWB frequency range. Notched frequency depends on the parameters of DG-CEBG structures; when there is a change in these parameters notch frequency is also changed. A low cost FR-4 substrate with thickness (h) = 1.6 mm, permittivity (ε) = 4.4 and loss tangent (δ) = 0.02 is used for the proposed antenna, and it has a compact size of 58 × 45 × 1.6 mm 3 .

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A Real Time UWB MIMO System With Programmable Transmit Waveforms: Architecture, Algorithms and Demonstrations

Cited by 13 publications

References 29 publications

Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Shannon information capacity of time reversal wideband multiple-input multiple-output system based on correlated statistical channels

Band Notched Uwb Mimo/Diversity Antenna Design With Inductance Boosted Compact Ebg Structures

Triple Band Notched Dg-Cebg Structure Based Uwb Mimo/Diversity Antenna

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