Due to the large amount of unused and unexplored spectrum resources, the so-called subTerahertz(sub-THz) frequency bands from 100 to 300 GHz are seen as promising bands for the next generation of wireless communicatio...Due to the large amount of unused and unexplored spectrum resources, the so-called subTerahertz(sub-THz) frequency bands from 100 to 300 GHz are seen as promising bands for the next generation of wireless communication systems. Channel modeling at sub-THz bands is essential for the design and deployment of future wireless communication systems. Channel measurement is a widely adopted method to obtain channel characteristics and establish mathematical channel models. Channel measurements depend on the design and construction of channel sounders. Thus, reliable channel sounding techniques and accurate channel measurements are required. In this paper, the requirements of an ideal channel sounder are discussed and the main channel sounding techniques are described for the subTHz frequency bands. The state-of-the-art sub-THz channel sounders reported in the literature and respective channel measurements are presented. Moreover, a vector network analyzer(VNA) based channel sounder, which supports frequency bands from 220 to330 GHz is presented and its performance capability and limitation are evaluated. This paper also discussed the challenge and future outlook of the sub-THz channel sounders and measurements.展开更多
Sub-terahertz(Sub-THz),defined as the frequency bands in 100-300 GHz,is promising for future generation communications and sensing applications.Accurate channel measurement and modeling are essential for development a...Sub-terahertz(Sub-THz),defined as the frequency bands in 100-300 GHz,is promising for future generation communications and sensing applications.Accurate channel measurement and modeling are essential for development and performance evaluation of the future communication systems.Accurate channel modeling relies on realistic channel data,which should be collected by high-fidelity channel sounder.This paper presents the measurement-based channel characterization in a large indoor scenario at 299-301 GHz.We firstly review the state-of-the-art channel measurements at sub-THz frequency bands.We then presented a VNA-based channel sounder for long-range measurements,which uses the radio-overfiber techniques.Channel measurements using this channel sounder are conducted in a large hall scenario.Based on the measurement data,we calculated and analyzed key propagation channel parameters,e.g.,path loss,delay spread,and angular spread.The results are also analyzed both in the line-of-sight(Lo S)and noneLo S(NLo S)cases.The large delay components in the measurements demonstrate the possibility of the longrange channel measurement campaign at 300 GHz.展开更多
基金supported by the EURAMET European Partnership on Metrology(EPM),under the 21NRM03 Metrology for Emerging Wireless Standards(MEWS)projectThe project(21NRM03 MEWS)has received funding from the EPM,co-financed from the European Union’s Horizon Europe Research and Innovation Programme,and by the Participating States。
文摘Due to the large amount of unused and unexplored spectrum resources, the so-called subTerahertz(sub-THz) frequency bands from 100 to 300 GHz are seen as promising bands for the next generation of wireless communication systems. Channel modeling at sub-THz bands is essential for the design and deployment of future wireless communication systems. Channel measurement is a widely adopted method to obtain channel characteristics and establish mathematical channel models. Channel measurements depend on the design and construction of channel sounders. Thus, reliable channel sounding techniques and accurate channel measurements are required. In this paper, the requirements of an ideal channel sounder are discussed and the main channel sounding techniques are described for the subTHz frequency bands. The state-of-the-art sub-THz channel sounders reported in the literature and respective channel measurements are presented. Moreover, a vector network analyzer(VNA) based channel sounder, which supports frequency bands from 220 to330 GHz is presented and its performance capability and limitation are evaluated. This paper also discussed the challenge and future outlook of the sub-THz channel sounders and measurements.
基金supported by the EURAMET European Partnership on Metrology(EPM),under 21NRM03 Metrology for Emerging Wireless Standards(MEWS)projectfunding from the EPM,co-financed from the European Union's Horizon Europe Research and Innovation Programme and by the Participating States。
文摘Sub-terahertz(Sub-THz),defined as the frequency bands in 100-300 GHz,is promising for future generation communications and sensing applications.Accurate channel measurement and modeling are essential for development and performance evaluation of the future communication systems.Accurate channel modeling relies on realistic channel data,which should be collected by high-fidelity channel sounder.This paper presents the measurement-based channel characterization in a large indoor scenario at 299-301 GHz.We firstly review the state-of-the-art channel measurements at sub-THz frequency bands.We then presented a VNA-based channel sounder for long-range measurements,which uses the radio-overfiber techniques.Channel measurements using this channel sounder are conducted in a large hall scenario.Based on the measurement data,we calculated and analyzed key propagation channel parameters,e.g.,path loss,delay spread,and angular spread.The results are also analyzed both in the line-of-sight(Lo S)and noneLo S(NLo S)cases.The large delay components in the measurements demonstrate the possibility of the longrange channel measurement campaign at 300 GHz.
