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Found 15 papers, 2 papers with code
Leveraging A Variety of Anchors in Cellular Network for Ubiquitous Sensing
A key challenge of 6G-oriented ISAC lies in how to perform ubiquitous sensing based on the communication signals and devices.
User-Assisted Networked Sensing in OFDM Cellular Network with Erroneous Anchor Position Information
However, in practice, the number of BSs possessing LOS paths to a target can be small, leading to marginal networked sensing gain.
MUSIC Algorithm for IRS-Assisted AOA Estimation
In this paper, we consider a more challenging AOA estimation setup in the intelligent reflecting surface (IRS) assisted integrated sensing and communication (ISAC) system, where LOS paths do not exist between the BS and the users, while the users' signals can be transmitted to the BS merely via their LOS paths to the IRS as well as the LOS path from the IRS to the BS.
A Quantize-then-Estimate Protocol for CSI Acquisition in IRS-Aided Downlink Communication
Different from the uplink counterpart where the BS possesses the pilot signals containing the CSI of all the users, in downlink communication, the distributed users merely receive the pilot signals containing their own CSI and cannot leverage the correlation in different users' channels revealed in [1].
A Heterogeneous 6G Networked Sensing Architecture with Active and Passive Anchors
In this paper, we show that the distance between a target and its associated IRS can be indirectly estimated based on the length of the BS-target-BS path and the BS-target-IRS-BS path.
Joint Data Association, NLOS Mitigation, and Clutter Suppression for Networked Device-Free Sensing in 6G Cellular Network
Recently, there is a growing interest in achieving integrated sensing and communication (ISAC) in the sixth-generation (6G) cellular network.
Networked Sensing in 6G Cellular Networks: Opportunities and Challenges
This article will discuss about the possibility of exploiting the future sixth-generation (6G) cellular network to realize ISAC.
Trilateration-Based Device-Free Sensing: Two Base Stations and One Passive IRS Are Sufficient
The classic trilateration technique can localize each target based on its distances to three anchors with known coordinates.
Exploiting Temporal Side Information in Massive IoT Connectivity
In particular, we propose to leverage the temporal correlation in device activity, e. g., a device active in the previous coherence block is more likely to be still active in the current coherence block, to improve the detection and estimation performance.
Device-Free Sensing in OFDM Cellular Network
A novel two-phase sensing framework is proposed to localize the passive targets that cannot transmit/receive reference signals to/from the base stations (BSs), where the ranges of the targets are estimated based on their reflected OFDM signals to the BSs in Phase I, and the location of each target is estimated based on its ranges to different BSs in Phase II.
A New Channel Estimation Strategy in Intelligent Reflecting Surface Assisted Networks
Specifically, in Phase I, the correlation coefficients between the channels of a typical BS antenna and those of the other antennas are estimated; while in Phase II, the cascaded channel of the typical antenna is estimated.
On Massive IoT Connectivity with Temporally-Correlated User Activity
In particular, we propose to leverage the temporal correlation in user activity, i. e., a device active at the previous time slot is more likely to be still active at the current moment, to improve the detection performance.
Action Detection
Activity Detection
Information Theory
Signal Processing
Information Theory
A Two-Stage Radar Sensing Approach based on MIMO-OFDM Technology
Since the technologies of orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) are widely used in the legacy cellular systems, this paper proposes a two-stage signal processing approach for radar sensing in an MIMO-OFDM system, where the scattered channels caused by various targets are estimated in the first stage, and the location information of the targets is then extracted from their scattered channels in the second stage.
Intelligent Reflecting Surface Aided Multicasting with Random Passive Beamforming
For the proposed scheme, we first derive a closed-form approximation of the outage probability, based on which the optimal $Q$ with best outage performance can be efficiently obtained.
Intelligent Reflecting Surface Aided Wireless Communications: A Tutorial
Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal prorogation in wireless networks.
