Wideband THz communication channel measurements for 5G indoor wireless networks

Khalid, Nabil; Akan, Özgür B.

doi:10.1109/icc.2016.7511280

Cited by 65 publications

(34 citation statements)

References 14 publications

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“…In many practical communication scenarios, no cable can be used for synchronization. References [12][13][14][15][16][17][18][19][20][21] are also available for the interested reader to learn more detail about the terahertz channel sounding methods. Synchronized, high-precision Rb-or Cs-based clocks also suffice for brief intervals.…”

Section: X(t) Y(t)mentioning

confidence: 99%

“…The terahertz (THz) region has been actively investigated in the literature, enabling a variety of new applications including spectroscopy, sensing, and communications [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. There is a wide variety of publications focusing on the frequency range approximately from 300 GHz up to 3 THz, and its fundamental and promising capability as a next technology platform [10,11,23].…”

Section: Introductionmentioning

confidence: 99%

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A Perspective on Terahertz Next-Generation Wireless Communications

et al. 2019

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In the past year, fifth-generation (5G) wireless technology has seen dramatic growth, spurred on by the continuing demand for faster data communications with lower latency. At the same time, many researchers argue that 5G will be inadequate in a short time, given the explosive growth of machine connectivity, such as the Internet-of-Things (IoT). This has prompted many to question what comes after 5G. The obvious answer is sixth-generation (6G), however, the substance of 6G is still very much undefined, leaving much to the imagination in terms of real-world implementation. What is clear, however, is that the next generation will likely involve the use of terahertz frequency (0.1–10 THz) electromagnetic waves. Here, we review recent research in terahertz wireless communications and technology, focusing on three broad topic classes: the terahertz channel, terahertz devices, and space-based terahertz system considerations. In all of these, we describe the nature of the research, the specific challenges involved, and current research findings. We conclude by providing a brief perspective on the path forward.

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Section: X(t) Y(t)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Perspective on Terahertz Next-Generation Wireless Communications

et al. 2019

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“…For instance, in [9], entire THz region measurement data set is split into relatively smaller chunks and then postprocessed. Note that such a "divide-and-conquer" approach is not safe, since there always exists a risk of creating artifacts during compilation.…”

Section: A Related Workmentioning

confidence: 99%

Statistical modeling of propagation channels for Terahertz band

Ekti

Boyacı

Alparslan

et al. 2017

2017 IEEE Conference on Standards for Communications and Networking (CSCN)

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Abstract-Digital revolution and recent advances in telecommunications technology enable to design communication systems which operate within the regions close to the theoretical capacity limits. Ever-increasing demand for wireless communications and emerging numerous high-capacity services and applications mandate providers to employ more bandwidth-oriented solutions to meet the requirements. Trend and predictions point out that marketplace targets data rates around 10Gbps or even more within the upcoming decade. It is clear that such rates could only be achieved by employing more bandwidth with the state-of-theart technology. Considering the fact that bands in the range of 275GHz-3000GHz, which are known as Terahertz (THz) bands, are not allocated yet for specific active services around the globe, there is an enormous potential to achieve the desired data rates. Although THz bands look promising to achieve data rates on the order of several tens of Gbps, realization of fully operational THz communications systems obliges to carry out a multidisciplinary effort including statistical propagation and channel characterizations, adaptive transceiver designs, reconfigurable platforms, advanced signal processing algorithms and techniques along with upper layer protocols equipped with various security and privacy levels. Therefore, in this study, several important statistical parameters for line-of-sight (LOS) channels are measured. High resolution frequency domain measurements are carried out at single-sweep within a span of 60GHz. Impact of antenna misalignment under LOS conditions is also investigated. By validating exponential decay of the received power in both time and frequency domain, path loss exponent is examined for different frequencies along with the frequency-dependent path loss phenomenon. Furthermore, impact of humidity is also tested under LOS scenario. Measurement results are presented along with relevant discussions and future directions are provided as well.

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“…Multiple closely spaced transmitters (TX) and receivers (RX) are used to establish parallel communication channels that can simultaneously enhance the throughput and reliability of the system. MIMO in conventional low frequency communication systems (2)(3)(4)(5) exploits multipath signals in a non-line-ofsight (NLOS) channel to achieve spatial diversity. However, in THz Band communication, LOS MIMO is more suitable due to small antenna size and high directivity.…”

Section: Introductionmentioning

confidence: 99%

“…In [2] and [3], channel response of single-input single-output (SISO) at 300 GHz is shown using subharmonic schottky diode mixer and a VNA. LOS and NLOS measurements at 300 GHz are performed with a system bandwidth of 20 GHz in [4]. However, to date, no MIMO link operating in THz Band has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Throughput Analysis of Low-THz MIMO Communication Channel in 5G Wireless Networks

Khalid

Akan

2016

IEEE Wireless Commun. Lett.

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This letter presents first results of a Terahertz (THz) Band line-of-sight (LOS) 2 × 2 multiple-input multipleoutput (MIMO) channel. The system architecture is based on a subharmonic mixer that translates the measuring frequency of vector network analyzer (VNA) in the range of 298-313 GHz. The system uses virtual antenna array technique to characterize a MIMO channel. The antenna element spacing is derived from the principles of diffraction limited optics to establish parallel channels for higher system throughput and reliability. The MIMO channel measurements are then used in simulations to evaluate performance of the communication system operating in THz Band MIMO communication channel. Finally, we have shown the MIMO link in THz Band operating at 7 Gbps, with higher reliability, in comparison with the single channel operating at 5.55 Gbps.

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Wideband THz communication channel measurements for 5G indoor wireless networks

Cited by 65 publications

References 14 publications

A Perspective on Terahertz Next-Generation Wireless Communications

A Perspective on Terahertz Next-Generation Wireless Communications

Statistical modeling of propagation channels for Terahertz band

Experimental Throughput Analysis of Low-THz MIMO Communication Channel in 5G Wireless Networks

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