THz Channel Sounding: Design and Validation of a High Performance Channel Sounder at 300 GHz

Schmieder, Mathis; Keusgen, Wilhelm; Peter, Michael; Wittig, Sven; Merkle, Thomas; Wagner, Stefan; Kuri, M.; Eichler, Taro

doi:10.1109/wcncw48565.2020.9124887

“…Zadoff-Chu sequences [161] may be used as synchronization sequences, replacing the conventional PN-sequences due to their advantageous autocorrelation properties. A first channel sounder has been developed at THz frequencies that transmits the Zadoff-Chu sequence within a 2 GHz bandwidth over a scaleabe frequency range between 270-320 GHz [162]. This architecture has shown to diminish spurious components that appear above the noise floor caused by non-linearities experienced in [129], and has demonstrated a dynamic range of 70 dB, that pertains a performance improvement of 10 dB.…”

Section: Sliding Correlator Measurementsmentioning

confidence: 99%

“…This architecture has shown to diminish spurious components that appear above the noise floor caused by non-linearities experienced in [129], and has demonstrated a dynamic range of 70 dB, that pertains a performance improvement of 10 dB. SC measurements by transmitting Zadoff-Chu sequences have been performed using the channel sounder presented in [162] for an indoor conference room scenario and an Urban street scenario [163], [164] considering Tx-Rx LoS distances of < 10 m up to ∼ 35 m, respectively. Nevertheless, any results obtained using this channel sounder architecture cannot be considered as conclusive for accurate channel characterisation as they suffer from a quite low delay resolution of 0.5 ns that corresponds to a path difference of 15 cm between multipaths.…”

Section: Sliding Correlator Measurementsmentioning

confidence: 99%

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: A Survey, Open Challenges and Future Research Directions

Serghiou

¹

,

Khalily

²

,

Brown

³

et al. 2022

IEEE Commun. Surv. Tutorials

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The Terahertz (THz) band (0.3-3.0 THz), spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks, as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design, which nonetheless is still at its infancy, as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (PtP) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communication systems will enable a plethora of new use cases and applications to be realized, in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities, and modeling techniques for 6G communication applications, along with guidelines and recommendations that will aid future characterization efforts in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature, based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurement and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

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“…THz measurements have been mainly conducted by three distinct channel sounding methods. These include the well known THz-TDS [123], Vector Network Analyser (VNA) [124] and Sliding Correlator (SC) channel sounder [125], while THz-FDS (Frequency-Domain Spectroscopy) [126] is another very promising channel sounding option. In this section, the performance of these channel sounding methods is described and compared with measurement requirements that may vary depending on the application scenario.…”

Section: B Requirements For Thz Channel Measurementsmentioning

confidence: 99%

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

Serghiou¹,

Khalily²,

Brown³

et al. 2022

Preprint

View full text Add to dashboard Cite

The Terahertz (THz) band (0.1-3.0 THz) spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design which nonetheless, is still at its infancy as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (P2P) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communications systems will enable a plethora of new use cases and applications to be realized in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurements and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

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“…SC channel sounding in the mmWave bands below 100 GHz with realtime capabilities that allow for fast electronic steering of the THz beam through the use of phased antenna arrays has been recently demonstrated [140], [141], [142]. Nevertheless, the first SC channel sounders at THz have also been introduced at 140 GHz [106] with 4 GHz bandwidth and at 300 GHz [125] at an ultra-broad bandwidth of 8 GHz, with the latter being able to capture 17590 CIRs per second, while also having 4×4 MIMO capabilities.…”

Section: Sliding Correlator Measurementsmentioning

confidence: 99%

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

Serghiou¹,

Khalily²,

Brown³

et al. 2022

Preprint

0

View full text Add to dashboard Cite

The Terahertz (THz) band (0.1-3.0 THz) spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design which nonetheless, is still at its infancy as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (P2P) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communications systems will enable a plethora of new use cases and applications to be realized in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurements and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

show abstract

THz Channel Sounding: Design and Validation of a High Performance Channel Sounder at 300 GHz

Cited by 19 publications

References 4 publications

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: A Survey, Open Challenges and Future Research Directions

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: A Survey, Open Challenges and Future Research Directions

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

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