25 papers
Reliability Limits and Decoding for Partial Nanopore Protein Rereads With Persistent State
Hongbin Ni, Haofan Dong, Ozgur B. Akan
Repeated observations of one physical object need not constitute independent channel uses. We model partial nanopore protein rereads as a finite-alphabet channel with canonical con…
Access Selection for Finite-SNR Modal Recoverability in Sampled-Wave Receivers
Shaojie Zhang, Ozgur B. Akan
Large-aperture wave receivers can contain a large number of candidate sensor locations, antenna ports, or measurement blocks, while hardware and processing constraints allow only a…
Acoustic, VOC, and Multimodal Stress Source Localization in the Internet of Plants
Ahmet B. Kilic, Ozgur B. Akan
The Internet of Plants (IoP) treats distributed plant networks as bio-sensing infrastructure for environmental monitoring, but spatial localization of stress sources within such ne…
A reversed solar illumination dependence of unintended emission from Starlink Direct-to-Cell satellites at 72-234 MHz with the EDA2
Haofan Dong, Houtianfu Wang, Hanlin Cai +1
Second-generation Starlink Direct-to-Cell (DTC) satellites carry an additional payload for direct cellular phone connectivity whose unintended electromagnetic radiation (UEMR) at s…
Rain Rate Estimation Bounds and Weather-Adaptive Pilot Allocation for LEO Satellite ISAC
Haofan Dong, Houtianfu Wang, Hanlin Cai +2
Rain attenuates Ku-band satellite signals by up to 20~dB, encoding precipitation information along the Earth-space slant path. This paper derives the Bayesian Cramér-Rao bound (BCR…
CisLunarSense: Opportunistic ISAC for Debris Detection at the Lunar Gateway
Haofan Dong, Ozgur B. Akan
We propose CisLunarSense, an opportunistic integrated sensing and communication (ISAC) framework that exploits the Lunar Gateway's Ka-band relay for monostatic debris detection, ad…
Fisher Information Limits of Satellite RF Fingerprint Identifiability for Authentication
Haofan Dong, Ozgur B. Akan
RF fingerprinting authenticates satellite transmitters by exploiting hardware-specific signal impairments, yet existing methods operate without theoretical performance guarantees.…
Performance Bounds and Robust Filtering for LEO Inter-Satellite Synchronization under Cross-Epoch Doppler Coupling
Haofan Dong, Houtianfu Wang, Hanlin Cai +1
Low Earth orbit (LEO) inter-satellite links (ISLs) must achieve joint synchronization and ranging under severe hardware impairments, namely oscillator phase noise, clock drift, and…
Distortion Is Not Noise: On the Limits of the Kappa Model for Monostatic ISAC
Haofan Dong, Ozgur B. Akan
Monostatic ISAC sensing differs from communication because the transmitter can monitor its distorted transmit waveform. Thus, the aggregate distortion model, which treats impai…
Edge-Side Fingerprints of Service Tiering and Quota Throttling in Starlink
Houtianfu Wang, Hanlin Cai, Haofan Dong +1
We design and evaluate an edge-side measurement procedure for auditing service tiering and quota-based throttling in Starlink. Using a 232.8-hour plan-hopping campaign on a UK resi…
Odor Communication with Green Leaf Volatiles for Stress Signalling in the Internet of Plants
Fatih Merdan, Ozgur B. Akan
This paper develops an end-to-end odor communication model for stress signaling between plants using Green Leaf Volatiles (GLV). A damaged transmitter plant emits (Z)-3-hexenal, (Z…
Cramer--Rao Bounds for Magneto-Inductive Integrated Sensing and Communications
Haofan Dong, Ozgur B. Akan
Magnetic induction (MI) enables communication in RF-denied environments (underground, underwater, in-body), where the medium conductivity imprints a deterministic signature on the…
MI-ISAC: Magneto-Inductive Integrated Sensing and Communication in the Reactive Near-Field for RF-Denied Environments
Haofan Dong, Ozgur B. Akan
Radio-frequency integrated sensing and communication (RF-ISAC) is ineffective inunderground, underwater, and in-body environments where conductive media attenuate electromagnetic w…
Intrinsic MIMO Particle Communication Channel with Random Advection
Fatih Merdan, Ozgur B. Akan
In this work, receiver diversity in advection-dominated diffusion-advection channels is investigated. Strong directed flow fundamentally alters the communication-theoretic properti…
Airborne Particle Communication Through Time-varying Diffusion-Advection Channels
Fatih Merdan, Ozgur B. Akan
Particle-based communication using diffusion and advection has emerged as an alternative signaling paradigm recently. While most existing studies assume constant flow conditions, r…
Performance Limits of Hardware-Constrained THz Inter-Satellite MIMO-ISAC Systems
Haofan Dong, Ozgur B. Akan
Terahertz inter-satellite links (THz-ISL) offer unprecedented bandwidth for future space networks but face fundamental constraints from onboard power and thermal budgets. This pape…
Modeling and Analysis of VOC-based Interplant Molecular Communication Channel
Bitop Maitra, Ozgur B. Akan
Molecular communication (MC) enables information transfer using particles inspired by biological systems. Volatile Organic Compounds (VOCs) are one of the most abundant and diverse…
Fundamental Limits of Cooperative Integrated Sensing and Communications over Low-Earth Orbit THz Satellite Channels
Haofan Dong, Houtianfu Wang, Hanlin Cai +1
Terahertz inter-satellite links enable unprecedented sensing precision for Low Earth Orbit (LEO) constellations, yet face fundamental bounds from hardware impairments, pointing err…
Fundamental Limits of THz Inter-Satellite ISAC Under Hardware Impairments
Haofan Dong, Ozgur B. Akan
This paper establishes a theoretical framework for analyzing the fundamental performance limits of terahertz (THz) Low Earth Orbit (LEO) inter-satellite link (ISL) Integrated Sensi…
MASC: Integrated Sensing and Communications for the Martian Internet of Space
Haofan Dong, Ozgur B. Akan
Mars exploration missions increasingly demand reliable communication systems, yet harsh environmental conditions -- particularly frequent dust storms, extreme Doppler effects, and…
Smell of Source: Learning-Based Odor Source Localization with Molecular Communication
Ayse Sila Okcu, Ozgur B. Akan
Odor source localization is a fundamental challenge in molecular communication, environmental monitoring, disaster response, industrial safety, and robotics. In this study, we inve…
Molecular Communication-Based Quorum Sensing Disruption for Enhanced Immune Defense
Shees Zulfiqar, Ozgur B. Akan
Molecular Communication (MC) utilizes chemical molecules to transmit information, introducing innovative strategies for pharmaceutical interventions and enhanced immune system moni…
Gravitational Communication: Fundamentals, State-of-the-Art and Future Vision
Houtianfu Wang, Ozgur B. Akan
This paper provides a comprehensive overview of fundamentals and the latest research progress in gravitational communication, with a detailed historical review of gravitational wav…
Martian Dust Storm Detection with THz Opportunistic Integrated Sensing and Communication in the Internet of Space (IoS)
Haofan Dong, Ozgur B. Akan
This paper presents the Mars Dust Storm Detector (MDSD), a system that leverages the THz Opportunistic Integrated Sensing and Communications (OISAC) signals between Mars surface as…