With the recent advances in Internet of Things (IoT), significance information technologies to modern industry is upgraded from purely providing surveillance-centric functions building a comprehensive framework industrial processes. Innovative techniques and concepts emerge under such circumstances, e.g., digital twin, which essentially involves data acquisition, human-machine-product interconnection, knowledge discovery generation, intelligent control, etc. Signal processing are crucial...

Even though indoor smoking ban is being put into practice in civilized countries, existing vision or sensor-based detection methods cannot provide ubiquitous detection. In this paper, we take the first attempt to build a passive system, which leverages patterns leaves on WiFi signals identify activity even non-line-of-sight and through-wall environments. We study behaviors of smokers leverage common features recognize series motions during smoking, avoiding target-dependent training set...

The proliferation of loT applications drives the need ubiquitous connections among heterogeneous wireless devices. Cross-Technology Communication (CTC) is a significant technique to directly exchange information devices that follow different standards. By exploiting side-channel like frequency, amplitude or temporal modulation, existing works enable CTC but have limited performance under channel noise. In this paper, we propose WiZig, novel employs modulation techniques in both and...

Shopping behavior data are of great importance to understand the effectiveness marketing and merchandising efforts. Online clothing stores capable capturing customer shopping by analyzing click stream carts. Retailers with physical stores, however, still lack effective methods identify comprehensive behaviors. In this paper, we show that backscatter signals passive RFID tags can be exploited detect record how customers browse which items clothes they pay attention to, usually match with. The...

To save energy, wireless sensor networks often run in a low duty cycle mode, where the radios of nodes are scheduled between ON and OFF states. For to communicate with each other, Low Power Listening (LPL) Probing (LPP) two types rendezvous mechanisms. Nodes LPL or LPP rely on signal strength probe packets detect potential transmissions, then keep radio-on for communications. Unfortunately, many cases, susceptible interference, resulting undesirable radio time when interference is above...

Even though indoor smoking ban is being put into practice in civilized countries, existing vision or sensor-based detection methods cannot provide ubiquitous service. In this paper, we take the first attempt to build a passive system, Smokey, which leverages patterns leaves on WiFi signal identify activity even non-line-of-sight and through-wall environments. We study behaviors of smokers leverage common features recognize series motions during smoking, avoiding target-dependent training set...

Cross- Technology Communication (CTC) is an emerging technique to enable the direct communication among different wireless technologies. A main category of existing proposals on CTC propose modulate packets at sender side, and demodulate them into 1 0 bits receiver side. The performance those likely degrade in a densely coexisting environment. Solely judged according received signal strength, symbol that modulated as packet absence generally indistinguishable from dynamic interference. In...

Cross-technology communication (CTC) is a technique that enables direct among different wireless technologies. Recent works in this area have made positive progress, but high-throughput CTC from ZigBee to WiFi remains an open problem. In paper, we propose ZigFi, novel framework WiFi. Without impacting the ongoing transmissions, ZigFi carefully overlaps packets with packets. Through experiments show Channel State Information (CSI) of overlapped can be used convey data Based on finding,...

RFID tracking attracts a lot of research efforts in recent years. Most the existing approaches, however, adopt an orientation-oblivious model. When target whose orientation changes, those approaches suffer from serious accuracy degradation. In order to achieve with pervasive applicability various scenarios, we this paper propose OmniTrack, orientation-aware approach. Our study discovers linear relationship between tag and phase change backscattered signals. Based on finding, model explicitly...

Whispering gallery mode (WGM) microcavities provide increasing opportunities for precision measurement due to their ultrahigh sensitivity, compact size, and fast response. However, the conventional WGM sensors rely on monitoring changes of a single mode, abundant sensing information in transmission spectra has not been fully utilized. Here, empowered by machine learning (ML), we propose demonstrate an ergodic method optofluidic microcavity high-precision pressure measurement. The developed...

Existing WiFi sensing systems transmit dedicated high-rate packets for accurate sensing. These "sensing packets" greatly affect the main data communication function of and significantly counteract promised benefit reusing In this work, we propose WiImg2.0, a lightweight system which involves machine learning techniques to enable under low packet rate, pushing one step towards real-life adoption. The key idea is convert CSI samples into images employ Generative Adversarial Network (GAN) image...

Shopping behavior data is of great importance in understanding the effectiveness marketing and merchandising campaigns. Online clothing stores are capable capturing customer shopping by analyzing click streams carts. Retailers with physical stores, however, still lack effective methods to comprehensively identify behaviors. In this paper, we show that backscatter signals passive RFID tags can be exploited detect record how customers browse which garments they pay attention to, usually pair...

Cross-technology communication (CTC) is a technique that enables direct among different wireless technologies. Recent works in this area have made substantial progress, but CTC from ZigBee to WiFi remains an open problem. In paper, we propose ZigFi, novel framework WiFi. ZigFi carefully overlaps packets with packets. Through experiments show Channel State Information (CSI) of the overlapped can be used convey data Based on finding, receiver-initiated protocol and translate decoding problem...

Mobile sensing has become a new style of applications and most the smart devices are equipped with varieties sensors or functionalities to enhance capabilities. Current systems concentrate on how capabilities; however, may lead leakage users’ privacy. In this paper, we present WiPass, way leverage wireless hotspot functionality snoop unlock passwords/patterns without support additional hardware. The attacker can “see” your even one meter away. WiPass leverages impacts finger motions signals...

Cross-Technology Communication (CTC) is an emerging technique that enables direct communication across different wireless technologies. The state-of-the-art works in this area propose physical-level CTC, which the transmitters emulate signals follow receiver's standard. Physical-level CTC means considerable processing complexity at transmitter, doesn't apply to from a low-end transmitter high-end receiver, e.g. ZigBee WiFi. This paper presents transmitter-transparent cross-technology...

RFID tracking attracts a lot of research efforts in recent years. Most the existing approaches, however, adopt an orientation-oblivious model. When target whose orientation changes, those approaches suffer from serious accuracy degradation. In order to achieve with pervasive applicability various scenarios, this article, we propose OmniTrack, orientation-aware approach. Our study presents generic model that discribes linear relationship between tag and phase change backscattered signals....

The advancements of AI and the exponential growth sensory data are unlocking a wave intelligent sensing applications. To overcome shortcoming centralized learning local training, Google proposes federated that allows users to collectively reap benefits shared models trained from decentralized data. However, directly applying applications faces two deficiencies: 1) omitting personalities 2) high latency. Aiming at these limitations, in this article, we propose new framework, Federated...

To save energy, wireless sensor networks often run in a low-duty-cycle mode, where the radios of nodes are scheduled between ON and OFF states. For to communicate with each other, low power listening (LPL) probing (LPP) two types rendezvous mechanisms. Nodes LPL or LPP rely on signal strength probe packets detect potential transmissions, then keep radio-ON for communications. Unfortunately, co-existing environments, susceptible interference, resulting undesirable radio time when interference...

In this article, we propose WiSign that recognizes the continuous sentences of American Sign Language (ASL) with existing WiFi infrastructure. Instead identifying individual ASL words from manually segmented sentence in works, can automatically segment original channel state information (CSI) based on power spectral density (PSD) segmentation method. constructs a five-layer Deep Belief Network (DBN) to extract features isolated fragments, and then uses Hidden Markov Model (HMM) Gaussian...

Cross-Technology Communication (CTC) is an emerging technique that enables direct interconnection among incompatible wireless technologies. Recent work proposes CTC from IEEE 802.11b to LoRa but has a low efficiency due their extremely asymmetric data rates. In this paper, we propose WiRa emulates waveforms with 802.11ax achieve efficient WiFi LoRa. By taking advantage of the OFDMA in 802.11ax, can use only small Resource Unit (RU) emulate chirps and set other RUs free for high-rate users....