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The performance of systems where multiple users communicate over wireless fading links benefits from channel-adaptive allocation of the available resources. Different from most existing approaches that allocate resources based on perfect…

信息论 · 计算机科学 2009-09-07 Antonio G. Marques , Georgios B. Giannakis , Javier Ramos

In this paper, we investigate a cell-free massive multiple-input and multiple-output (MIMO)-enabled integration communication, computation, and sensing (ICCS) system, aiming to minimize the maximum computation latency to guarantee the…

信号处理 · 电气工程与系统科学 2025-02-25 Qihao Peng , Qu Luo , Zheng Chu , Zihuai Lin , Maged Elkashlan , Pei Xiao , George K. Karagiannidis , Christos Masouros

The design of energy-efficient mechanisms is one of the key challenges in emerging wireless small cell networks. In this paper, a novel approach for opportunistically switching ON/OFF base stations to improve the energy efficiency in…

网络与互联网体系结构 · 计算机科学 2016-05-03 Sumudu Samarakoon , Mehdi Bennis , Walid Saad , Matti Latva-aho

One fundamental challenge in 5G URLLC is how to optimize massive MIMO systems for achieving low latency and high reliability. A natural design choice to maximize reliability and minimize retransmission is to select the lowest allowed target…

信息论 · 计算机科学 2024-10-30 Xu Du , Yin Sun , Ness B. Shroff , Ashutosh Sabharwal

Due to the large power consumption in RF-circuitry of massive MIMO systems, practically relevant performance measures such as energy efficiency or bandwidth efficiency are neither necessarily monotonous functions of the total transmit power…

信息论 · 计算机科学 2018-02-20 Ali Bereyhi , Saba Asaad , Ralf R. Müller

Flexible cooperation among base stations (BSs) is critical to improve resource utilization efficiency and meet personalized user demands. However, its practical implementation is hindered by the current radio access network (RAN), which…

信号处理 · 电气工程与系统科学 2025-06-05 Jingbo Liu , Jiacheng Chen , Zeyu Sun , Bo Qian , Haibo Zhou

While new mechanisms and configurations of the 5G radio are offering step forward in delivery of ultra-reliable low latency communication services in general, and haptic communications in particular, they could inversely impact the…

网络与互联网体系结构 · 计算机科学 2018-09-27 Maliheh Mahlouji , Toktam Mahmoodi

A hard-deadline, opportunistic scheduling problem in which $B$ bits must be transmitted within $T$ time-slots over a time-varying channel is studied: the transmitter must decide how many bits to serve in each slot based on knowledge of the…

信息论 · 计算机科学 2009-07-01 Juyul Lee , Nihar Jindal

We consider the problem of allocating radio resources over wireless communication links to control a series of independent wireless control systems. Low-latency transmissions are necessary in enabling time-sensitive control systems to…

信号处理 · 电气工程与系统科学 2018-11-02 Mark Eisen , Mohammad M. Rashid , Konstantinos Gatsis , Dave Cavalcanti , Nageen Himayat , Alejandro Ribeiro

In this letter, we consider a new type of flexible-antenna system, termed pinching-antenna, where multiple low-cost pinching antennas, realized by activating small dielectric particles on a dielectric waveguide, are jointly used to serve a…

信息论 · 计算机科学 2025-02-19 Yanqing Xu , Zhiguo Ding , George K. Karagiannidis

Due to increasing demands of seamless connection and massive information exchange across the world, the integrated satellite-terrestrial communication systems develop rapidly. To shed lights on the design of this system, we consider an…

信息论 · 计算机科学 2022-10-25 Lina Zhu , Lin Bai , Lin Zhou , Jinho Choi

While existing studies have highlighted the advantages of deep learning (DL)-based joint source-channel coding (JSCC) schemes in enhancing transmission efficiency, they often overlook the crucial aspect of resource management during the…

信息论 · 计算机科学 2024-04-01 Kaiyi Chi , Qianqian Yang , Yuanchao Shu , Zhaohui Yang , Zhiguo Shi

Pilot pattern design over doubly dispersive channels has regained significant research interest, driven by emerging high-mobility applications in 5G-Advanced and 6G systems, as well as recent developments in Orthogonal Time Frequency Space…

信号处理 · 电气工程与系统科学 2026-05-05 Xuyao Yu , Zijun Gong , Zhilu Lai

In this paper, we study resource allocation algorithm design for secure multi-user downlink ultra-reliable low latency communication (URLLC). To enhance physical layer security (PLS), the base station (BS) is equipped with multiple antennas…

信息论 · 计算机科学 2020-03-02 Walid R. Ghanem , Vahid Jamali , Robert Schober

This paper proposes a flexible pilot assignment method to jointly optimize the uplink and downlink data transmission in multi-cell Massive multiple input multiple output (MIMO) systems with correlated Rayleigh fading channels. By utilizing…

信息论 · 计算机科学 2021-07-01 Tien Hoa Nguyen , Trinh Van Chien , Hien Quoc Ngo , Xuan Nam Tran , Emil Björnson

The number of LTE users and their applications has increased significantly in the last decade, which increased the demand on the mobile network. LTE-Advanced comes with many features that can support this increasing demand. LTE-Advanced…

网络与互联网体系结构 · 计算机科学 2022-08-30 Najem N Sirhan , Manel Martinez-Ramon

Coordinated information processing by the base stations of multi-cell wireless networks enhances the overall quality of communication in the network. Such coordinations for optimizing any desired network-wide quality of service (QoS)…

信息论 · 计算机科学 2015-05-20 Ali Tajer , Narayan Prasad , Xiaodong Wang

We propose the QoS-aware BS-selection schemes for the distributed wireless MIMO links, which aim at minimizing the BS usages and reducing the interfering range, while satisfying diverse statistical delay-QoS constraints characterized by the…

信息论 · 计算机科学 2011-04-22 Qinghe Du , Xi Zhang

In this paper, we consider a multiuser multiple-input multiple-output (MU-MIMO) communication system between a base station equipped with multiple antennas and multiple mobile users each equipped with a single antenna. The uplink scenario…

信息论 · 计算机科学 2014-09-23 Songtao Lu , Zhengdao Wang

A power optimal scheduling algorithm that guarantees desired throughput and bounded delay to each user is developed for fading multi-access multi-band systems. The optimization is over the joint space of all rate allocation and coding…

信息论 · 计算机科学 2007-07-13 Prasanna Chaporkar , Kimmo Kansanen , Ralf R. Müller