Joint Activity Detection and Channel Estimation for mmW/THz Wideband Massive Access

Shao, Xiaodan; Chen, Xiaoming; Zhong, Caijun; Zhang, Zhaoyang

doi:10.1109/icc40277.2020.9149336

Cited by 26 publications

(12 citation statements)

References 16 publications

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“…For instance, it showed how steerable mmWave antenna arrays are used for both sensing and communication functionalities. The work in [100] proposed a unified activity detection and channel estimation for both mmWave and THz wideband massive access. In [101], a new model took the advantage of RISs into account for joint channel sensing and high data-rate communication in THz MIMO communication systems.…”

Section: B Mmwave-and Thz-bands Jsacmentioning

confidence: 99%

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

Kim

Choi

2022

IEEE Access

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Since the 1960s, joint sensing and communication (JSAC) has been proposed as an attractive technique with advantages of enhanced spectral and hardware efficiency along with low latency. However, in those old days, complex transceiver designs hindered the massive adoption of JSAC in many applications. Nevertheless, thanks to advancing wireless technologies in recent years, JSAC has recently attracted substantial attention for a wide range of civil and military applications. In particular, JSAC enables simultaneous sensing and communication functionalities with the full cooperation of both operations in shared resources such as hardware as well as radio resources (i.e., frequency, time, space and so on). Note that sensing functionality is associated with other sub-functionalities of radio-detectionand-ranging (Radar), computation, and localization which are sporadically used terms in the literature. Thus, to generalize the concept and avoid any confusion, we use the term "sensing" in the acronym JSAC as a consistent and general term associated with the other aforementioned sub-functionalities. This paper elaborates on defining sensing and communication operations and then, provides an overview with preliminaries, key latest findings, and state-of-the-art of JSAC. It also explores both existing and emerging Internet of Things (IoT) applications of JSAC. Next, it provides a new classification of JSAC technologies by taking into account not only the existing JSAC technologies but also a diverse range of technologies that allow JSAC to be used for various types of IoT applications. Eventually, this study projects future research directions and challenges of enabling JSAC in IoT.

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Section: B Mmwave-and Thz-bands Jsacmentioning

confidence: 99%

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

Kim

Choi

2022

IEEE Access

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“…Consequently, the assumption of common sparse channel support does not hold, which means the existing schemes for millimeter-wave massive MIMO [18,19] will suffer from severe performance degradation in wideband THz massive MIMO systems. Although several channel estimation schemes for THz massive MIMO has been recently proposed, such as the low-rank matrix reconstruction based scheme [23] and the joint activity detection and channel estimation scheme [24], they have not considered the frequencydependent sparse channel support either. Hence, to the best of our knowledge, the wideband channel estimation in THz massive MIMO systems has not been well addressed in the literature.…”

Section: Prior Workmentioning

confidence: 99%

Wideband channel estimation for THz massive MIMO

Tan

Dai

2021

China Commun.

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the wideband channel can be recovered by calculating the elements on the total sparse channel support at all subcarriers. The proposed scheme exploits the wideband channel property implied by the beam split effect, i.e., beam split pattern, which can significantly improve the channel estimation accuracy. Simulation results show that the proposed scheme is able to achieve higher accuracy than existing schemes.

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“…For instance, it showed how steerable mmWave antenna arrays are used for both sensing and communication functionalities. The work in [100] proposed a unified activity detection and channel estimation for both mmWave and THz wideband massive access. In In [105], a JSAC downlink THz approach using NOMA was proposed where a joint beamforming-power-bandwidth allocation and communication was employed.…”

Section: A Ris-assisted Jsacmentioning

confidence: 99%

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

Kim¹,

Choi²

2021

Preprint

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Joint Activity Detection and Channel Estimation for mmW/THz Wideband Massive Access

Cited by 26 publications

References 16 publications

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

Wideband channel estimation for THz massive MIMO

Toward Joint Radar, Communication, Computation, Localization, and Sensing in IoT

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