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This study investigates the outage performance of an under-laying wireless-powered secondary system that reuses the primary users (PU) spectrum in a multiple-input multiple-output (MIMO) cognitive radio (CR) network. Each secondary user…

Information Theory · Computer Science 2023-09-19 Iman Pazouki , Roshanak Soltani , Mohammad Lari

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

Data applications may typically tolerate a moderate delay before packet transmission between user equipment (UE) and cell begins. This delay can be taken advantage to reduce the communication distance, improve coverage probability, and…

Signal Processing · Electrical Eng. & Systems 2019-04-19 Haluk Celebi , Ismail Guvenc , Henning Schulzrinne

In this letter, we consider single-cell, single-user systems wherein uplink and downlink user equipment communicate with a full-duplex relay. Due to the near-far problem, the self-interference (SI) can be 100-1000x the received signal…

Information Theory · Computer Science 2021-06-03 Elyes Balti , Brian L. Evans

Driven by mission-critical applications in modern industrial systems, the 5th generation (5G) communication system is expected to provide ultra-reliable low-latency communications (URLLC) services to meet the quality of service (QoS)…

Networking and Internet Architecture · Computer Science 2018-01-22 Mingyan Li , Xinping Guan , Cunqing Hua , Cailian Chen , Ling Lyu

Device-to-device (D2D) communications as an underlay of a LTE-A (4G) network can reduce the traffic load as well as power consumption in cellular networks by way of utilizing peer-to-peer links for users in proximity of each other. This…

Networking and Internet Architecture · Computer Science 2014-12-25 Sajjad Mehri Alamouti , Ahmad R. Sharafat

Deployment of Long Term Evolution (LTE) in unlicensed spectrum has been a candidate feature to meet the explosive growth of traffic demand since 3GPP release 13. To further explore the advantage of unlicensed bands, in this context the…

Signal Processing · Electrical Eng. & Systems 2018-02-19 Jinyu Zhang , Wenting Chang , Huaning Niu , Salvatore Talarico , Hongwen Yang

The use of unmanned aerial vehicles (UAVs) as base stations (BSs) is envisaged as a key enabler for the fifth generation (5G) and beyond-5G networks. Specifically, aerial base stations (UAV-BS) are expected to provide ubiquitous…

Information Theory · Computer Science 2020-11-11 Wael Jaafar , Shimaa Naser , Sami Muhaidat , Paschalis C. Sofotasios , Halim Yanikomeroglu

This paper summarizes the idea of Low-Cost Interlinked Subarrays (LISA), which was published in HPCA 2016, and examines the work's significance and future potential. Contemporary systems perform bulk data movement movement inefficiently, by…

Hardware Architecture · Computer Science 2018-05-09 Kevin K. Chang , Prashant J. Nair , Saugata Ghose , Donghyuk Lee , Moinuddin K. Qureshi , Onur Mutlu

We address the problem of uplink co-operative reception with constraints on both backhaul bandwidth and the receiver aperture, or number of antenna signals that can be processed. The problem is cast as a network utility (weighted sum rate)…

Systems and Control · Computer Science 2016-11-17 Shirish Nagaraj , Michael L. Honig , Khalid Zeineddine

While the current generation of mobile and fixed communication networks has been standardized for mobile broadband services, the next generation is driven by the vision of the Internet of Things and mission critical communication services…

Signal Processing · Electrical Eng. & Systems 2018-08-08 Xiaolin Jiang , Hossein S. Ghadikolaei , Gabor Fodor , Eytan Modiano , Zhibo Pang , Michele Zorzi , Carlo Fischione

Despite being the subject of a growing body of research, non-orthogonal multiple access has failed to garner sufficient support to be included in modern standards. One of the more promising approaches to non-orthogonal multiple access is…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Dylan Wheeler , Erin E. Tripp , Balasubramaniam Natarajan

Until the 4th Generation (4G) cellular 3GPP systems, a user equipment's (UE) cell association has been based on the downlink received power from the strongest base station. Recent work has shown that - with an increasing degree of…

Networking and Internet Architecture · Computer Science 2016-11-15 Hisham Elshaer , Federico Boccardi , Mischa Dohler , Ralf Irmer

The increased power consumption of high-resolution data converters at higher carrier frequencies and larger bandwidths is becoming a bottleneck for communication systems. In this paper, we consider a fully digital base station equipped with…

Signal Processing · Electrical Eng. & Systems 2022-06-30 Khurram Usman Mazher , Amine Mezghani , Robert W. Heath

In conventional backscatter communication (BackCom) systems, time division multiple access (TDMA) and frequency division multiple access (FDMA) are generally adopted for multiuser backscattering due to their simplicity in implementation.…

Information Theory · Computer Science 2025-03-10 Bowen Gu , Dong Li , Hao Xie , Kan Yu , Quansheng Guan , Yongjun Xu

In this work we extend the concept of uplink-downlink rate balancing to frequency division duplex (FDD) massive MIMO systems. We consider a base station with large number antennas serving many single antenna users. We first show that any…

Information Theory · Computer Science 2016-05-04 Itsik Bergel , Yona Perets , Shlomo Shamai

Ultra-dense networks (UDNs) represent a transformative access architecture for upcoming sixth generation (6G) systems, poised to meet the surging demand for high data rates. Achieving precise synchronization across diverse base stations…

Multiagent Systems · Computer Science 2025-04-08 Debjani Goswami , Indrakshi Dey , Nicola Marchetti , Suvra Sekhar Das

Feasibility of using unlicensed spectrum for ultra reliable low latency communications (URLLC) is still a question for beyond 5G wireless networks. Low latency access to the channel and efficiently sharing spectrum among the multiple users…

Information Theory · Computer Science 2022-06-15 Irshad A. Meer , Woong-Hee Lee , Mustafa Ozger , Cicek Cavdar , Ki Won Sung

In this paper, an uplink scheduling policy problem to minimize the network latency, defined as the air-time to serve all of users with a quality-of-service (QoS), under an energy constraint is considered in a training-based large-scale…

Information Theory · Computer Science 2016-07-27 Kyung Jun Choi , Kwang Soon Kim

This paper considers a downlink (DL) system where non-orthogonal multiple access (NOMA) beamforming and dynamic user pairing are jointly optimized to maximize the minimum throughput of all DL users. The resulting problem belongs to a class…

Signal Processing · Electrical Eng. & Systems 2020-06-26 Kha-Hung Nguyen , Hieu V. Nguyen , Van-Phuc Bui , Oh-Soon Shin