activity
20212026
most citedAge of Information in Downlink Systems: Broadcast or Unicast Transmission?

17 citations · 18 across the 11 of their papers we have counts for

collaborators

11 papers

cs.IT2026

Artificial-Noise Aided Design for Movable-Antenna Enabled Physical-Layer Service Integration

Zhifeng Tang, Guangchen Wang, Nan Yang +2

This paper pioneers a novel scheme for artificial-noise (AN)-aided movable-antenna (MA)-enabled physical-layer service integration (PLSI) to harmonize the simultaneous delivery of…

eess.SP2026

Distributed Optimization-Learning with Graph Transformers for Terahertz Cell-Free Integrated Sensing and Communication Systems

Guangchen Wang, Zhifeng Tang, Nan Yang +2

In this paper, we propose a distributed optimization-learning framework for terahertz (THz) cell-free integrated sensing and communication (CF-ISAC) systems, termed Distributed Opt…

cs.IT2026

Impact of Pointing Errors and Correlated Wall Blockages on Practical Grid-based Indoor Terahertz Communication Systems

Zhifeng Tang, Nan Yang, Salman Durrani +3

Terahertz (THz) communications has emerged as a promising technology for future wireless systems due to its potential to support extremely high data rates. However, severe path los…

eess.SP2026

Impact of Pointing Error on Coverage Performance of 3D Indoor Terahertz Communication Systems

Zhifeng Tang, Nan Yang, Xiangyun Zhou +3

In this paper, we develop a tractable analytical framework for a three-dimensional (3D) indoor terahertz (THz) communication system to theoretically assess the impact of the pointi…

cs.IT2025

Low Complexity Artificial Noise Aided Beam Focusing Design in Near-Field Terahertz Communications

Zhifeng Tang, Nan Yang, Xiangyun Zhou +3

In this paper, we develop a novel low-complexity artificial noise (AN) aided beam focusing scheme in a near-field terahertz wiretap communication system. In this system, the base s…

cs.IT2024

Coverage Analysis for 3D Indoor Terahertz Communication System Over Fluctuating Two-Ray Fading Channels

Zhifeng Tang, Nan Yang, Salman Durrani +3

In this paper, we develop a novel analytical framework for a three-dimensional (3D) indoor terahertz (THz) communication system. Our proposed model incorporates more accurate model…

cs.IT2022

Age of Information of Multi-user Mobile Edge Computing Systems

Zhifeng Tang, Zhuo Sun, Nan Yang +1

In this paper, we analyze the average age of information (AoI) and the average peak AoI (PAoI) of a multiuser mobile edge computing (MEC) system where a base station (BS) generates…

cs.IT2022

Average Age of Information Penalty of Short-Packet Communications with Packet Management

Zhifeng Tang, Nan Yang, Xiangyun Zhou +1

In this paper, we analyze the non-linear age of information (AoI) performance in a point-to-point short packet communication system, where a transmitter generates packets based on…

cs.IT2022★ 17 cited

Age of Information in Downlink Systems: Broadcast or Unicast Transmission?

Zhifeng Tang, Nan Yang, Parastoo Sadeghi +1

We analytically decide whether the broadcast transmission scheme or the unicast transmission scheme achieves the optimal age of information (AoI) performance of a multiuser system…

cs.IT2021

The Age of Information of Short-Packet Communications: Joint or Distributed Encoding?

Zhifeng Tang, Nan Yang, Parastoo Sadeghi +1

In this paper, we analyze the impact of different encoding schemes on the age of information (AoI) performance in a point-to-point system, where a source generates packets based on…

cs.IT2021★ 1 cited

Whittle Index Based Scheduling Policy for Minimizing the Cost of Age of Information

Zhifeng Tang, Zhuo Sun, Nan Yang +1

We design a new scheduling policy to minimize the general non-decreasing cost function of age of information (AoI) in a multiuser system. In this system, the base station stochasti…