The DOI matches its Crossref record.
Complex signal demodulation and random body movement cancellation techniques for non-contact vital sign detection
Abstract
A complex signal demodulation technique is proposed to eliminate the null detection point problem in non-contact vital sign detection. This technique is robust against DC offset in direct conversion system. Based on the complex signal demodulation, a random body movement cancellation technique is developed to cancel out strong noise caused by random body movement in non-contact vital sign monitoring. Multiple transceivers and antennas with polarization and frequency multiplexing are used to detect signals from different body orientations. The noise due to random body movement is cancelled out based on different patterns of the desired and undesired signals. Experiments by highly compact 5–6 GHz portable radar systems have been performed to verify these two techniques.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Random Body Movement Cancellation in Doppler Radar Vital Sign Detection
Li, C., & Lin, J. (2008) · IEEE Transactions on Microwave Theory and Techniques · doi:10.1109/tmtt.2008.2007139 · Cited by 448
Self-citationWireless Sensing for Human Activity: A Survey
Liu, J., Liu, H., Chen, Y., Wang, Y., & Wang, C. (2020) · IEEE Communications Surveys & Tutorials · doi:10.1109/comst.2019.2934489 · Cited by 414
DoppleSleep: a contactless unobtrusive sleep sensing system using short-range Doppler radar
Rahman, T., Adams, A. T., Ravichandran, R. V., Zhang, M., Patel, S. N., Kientz, J. A., & Choudhury, T. (2015) · Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing · doi:10.1145/2750858.2804280 · Cited by 175
Signal-to-Noise Ratio in Doppler Radar System for Heart and Respiratory Rate Measurements
Droitcour, A. D., Boric-Lubecke, O., & Kovacs, G. T. A. (2009) · IEEE Transactions on Microwave Theory and Techniques · doi:10.1109/tmtt.2009.2029668 · Cited by 162
Metadata
- Authors
- Li, C., & Lin, J.
- Venue
- 2008 IEEE MTT-S International Microwave Symposium Digest
- Publisher
- IEEE
- Published
- 2008-06
- Pages
- 567-570
- ISSN
- 0149-645X (ISSN-L)
- OpenAlex
- W2161739261
- Cited by
- 192
- References
- 0
- FWCI
- 15.27
- Type
- conference paper
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Complex signal demodulation and random body movement cancellation techniques for non-contact vital sign detection. https://app.cochat.ai/papers/10.1109/mwsym.2008.4633229
- The paper
- Li, C., & Lin, J. (2008). Complex signal demodulation and random body movement cancellation techniques for non-contact vital sign detection. 2008 IEEE MTT-S International Microwave Symposium Digest. https://doi.org/10.1109/mwsym.2008.4633229
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
