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This paper studies integrated sensing and communication (ISAC) with dynamic time division duplex (DTDD) cell-free (CF) massive multiple-input multiple-output~(mMIMO) systems. DTDD enables the CF mMIMO system to concurrently serve both…

Signal Processing · Electrical Eng. & Systems 2025-08-15 Anubhab Chowdhury , Sai Subramanyam Thoota , Erik G. Larsson

Dynamic time-division duplexing (TDD) enables independent uplink/downlink mode scheduling at each cell, based on the local traffic. However, this creates cross-interference among cells. Thus, the joint power allocation and scheduling…

Signal Processing · Electrical Eng. & Systems 2021-04-27 Chandan Kumar Sheemar , Leonardo Badia , Stefano Tomasin

Initial deployments of millimeter wave (mmWave) cellular networks are likely to be enabled with self-backhauling. In this work, we propose a random spatial model to analyze uplink (UL) and downlink (DL) SINR distribution and mean rates…

Information Theory · Computer Science 2017-10-30 Mandar N. Kulkarni , Jeffrey G. Andrews , Amitava Ghosh

Dynamic time-division duplex (D-TDD) aided mobile communication systems bear the potential to achieve significantly higher spectral efficiency than traditional static TDD based systems. However, strong cross-link interference (CLI) may be…

Signal Processing · Electrical Eng. & Systems 2025-05-13 Jia-Hui Bi , Shaoshi Yang , Xiao-Yang Wang , Yu-Song Luo , Sheng Chen

The TD-LTE system is envisaged to adopt dynamic time division duplexing (TDD) transmissions for small cells to adapt their communication service to the fast variation of downlink (DL) and uplink (UL) traffic demands. However, different…

Networking and Internet Architecture · Computer Science 2015-03-27 Qinqin Chen , Hui Zhao , Lin Li , Hang Long , Jianquan Wang , Xiaoyue Hou

In this paper, downlink (DL) precoding and power allocation strategies are identified for a time-division-duplex (TDD) multi-cell multi-user massive Full-Dimension MIMO (FD-MIMO) network. Utilizing channel reciprocity, DL channel state…

Information Theory · Computer Science 2018-09-27 Rubayet Shafin , Lingjia Liu

Full-duplex (FD) communication is an emerging technology that can potentially double the throughput of cellular networks. Preliminary studies in single-cell or small FD network deployments have revealed promising rate gains using…

Information Theory · Computer Science 2016-04-21 Italo Atzeni , Marios Kountouris , George C. Alexandropoulos

Recent achievement in self-interference cancellation algorithms enables potential application of full-duplex (FD) in 5G radio access systems. The exponential growth of data traffic in 5G can be supported by having more spectrum and higher…

Signal Processing · Electrical Eng. & Systems 2019-03-26 Jingwen Bai , Shu-ping Yeh , Feng Xue , Yang-seok Choi , Ping Wang , Shilpa Talwar

Device-to-device (D2D) underlaid cellular network, enabled with radio frequency energy harvesting (RFEH), and enhanced interference management schemes is a promising candidate to improve spectral and energy efficiency of next generation…

Information Theory · Computer Science 2020-02-06 Nasrin Razmi , Mehdi Mahdavi , Mohammadali Mohammadi , Petar Popovski

We consider a dynamic time division duplex (DTDD) enabled cell-free massive multiple-input multiple-output (CF-mMIMO) system, where each half-duplex (HD) access point (AP) is scheduled to operate in the uplink (UL) or downlink (DL) mode…

Signal Processing · Electrical Eng. & Systems 2022-05-24 Anubhab Chowdhury , Ribhu Chopra , Chandra R. Murthy

Simultaneous reuse of spectral resources by uplink and downlink, denoted as in-band full duplex (FD) communication, is promoted to double the spectral efficiency when compared to its half-duplex (HD) counterpart. Interference management,…

Information Theory · Computer Science 2015-11-20 Itsikiantsoa Randrianantenaina , Hesham Elsawy , Hayssam Dahrouj , Mohamed-Slim Alouini

6G networks are expected to integrate low Earth orbit satellites to ensure global connectivity by extending coverage to underserved and remote regions. However, the deployment of dense mega-constellations introduces severe interference…

Information Theory · Computer Science 2025-11-12 Sourav Mukherjee , Bho Matthiesen , Armin Dekorsy , Petar Popovski

Dynamic time division duplexing (TDD) is envisioned as a vital transmission technology of the 5G new radio, due to its reciprocal propagation characteristics. However, the potential cross-link interference (CLI) imposes a fundamental…

Signal Processing · Electrical Eng. & Systems 2020-01-17 Ali A. Esswie , Klaus I. Pedersen

This paper analyses the performance benefits of a user-centric scheduling approach, exploiting the flexibility of both dynamic time division duplex (TDD) and a variable transmission time interval (TTI), where the downlink to uplink ratio…

Networking and Internet Architecture · Computer Science 2017-10-06 Qi Liao , Paolo Baracca , David Lopez-Perez , Lorenzo Galati Giordano

We present a framework for joint amplification and phase shift optimization of the repeater gain in dynamic time-division duplex (TDD) repeater-assisted massive MIMO networks. Repeaters, being active scatterers with amplification and phase…

Signal Processing · Electrical Eng. & Systems 2026-04-24 Martin Andersson , Anubhab Chowdhury , Erik G. Larsson

Full duplex (FD) communications has the potential to double the capacity of a half duplex (HD) system at the link level. However, FD operation increases the aggregate interference on each communication link, which limits the capacity…

Networking and Internet Architecture · Computer Science 2015-10-01 Sanjay Goyal , Pei Liu , Shivendra Panwar , Rui Yang , Robert A. DiFazio , Erdem Bala

Network-assisted device-to-device communication is a promising technology for improving the performance of proximity-based services. This paper demonstrates how the integration of device-to-device communications and dynamic time-division…

Information Theory · Computer Science 2015-06-02 Demia Della Penda , Liqun Fu , Mikael Johansson

The recent developments in full duplex (FD) communication promise doubling the capacity of cellular networks using self interference cancellation (SIC) techniques. FD small cells with device-to-device (D2D) communication links could achieve…

Networking and Internet Architecture · Computer Science 2016-06-24 Arun Ramamurthy , Vanlin Sathya , Shrestha Ghosh , Antony Franklin , Bheemarjuna Reddy Tamma

One of key 5G scenarios is that device-to-device (D2D) and massive multiple-input multiple-output (MIMO) will be co-existed. However, interference in the uplink D2D underlaid massive MIMO cellular networks needs to be coordinated, due to…

Information Theory · Computer Science 2017-05-30 Anqi He , Lifeng Wang , Yue Chen , Kai-Kit Wong , Maged Elkashlan

Device-to-Device (D2D) communication appears as a key communication paradigm to realizing the vision of Internet of Things (IoT) into reality by supporting heterogeneous objects interconnection in a large scale network. These devices may be…

Networking and Internet Architecture · Computer Science 2016-06-03 Yunus Sarikaya , Hazer Inaltekin , Tansu Alpcan , Jamie Evans