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This paper investigates the impact of the number of antennas (8 to 64) and the array configuration on massive MIMO channel parameters estimation for multiple propagation scenarios at 3.5 GHz. Different measurement environments are…

Signal Processing · Electrical Eng. & Systems 2019-03-21 Thomas Choi , François Rottenberg , Peng Luo , Jianzhong Zhang , Andreas F. Molisch

One of the key features of next generation wireless communication systems will be the use of frequencies in the range 10-100GHz (aka mmWave band) in densely populated indoor and outdoor scenarios. Due to the reduced wavelength, antenna…

Information Theory · Computer Science 2016-07-26 Stefano Buzzi , Carmen D'Andrea

In this paper, the channel of an indoor holographic multiple-input multiple-output (MIMO) system is measured. It is demonstrated through experiments for the first time that the spatial oversampling of holographic MIMO systems is able to…

Information Theory · Computer Science 2023-01-16 Tengjiao Wang , Yongxi Liu , Ming Zhang , Wei E. I. Sha , Cen Ling , Chao Li , Shaobo Wang

Antennas of transmitters and receivers have been manipulated to increase the capacity of transmission and reception of signals. Using many elements in antennas to shape beams and direct nulls in a particular point for optimum signal…

Networking and Internet Architecture · Computer Science 2016-10-18 Mboli Sechang Julius

Massive multiple-input multiple-output (massive MIMO) and small cell densification are complementary key 5G enablers. Given a fixed number of the entire base-station antennas per unit area, this paper fairly compares (i) to deploy few base…

Networking and Internet Architecture · Computer Science 2019-10-22 Mounia Hamidouche , Ejder Baştuğ , Jihong Park , Laura Cottatellucci , Mérouane Debbah

To meet the future demand for huge traffic volume of wireless data service, the research on the fifth generation (5G) mobile communication systems has been undertaken in recent years. It is expected that the spectral and energy efficiencies…

Information Theory · Computer Science 2016-05-12 Dongming Wang , Yu Zhang , Hao Wei , Xiaohu You , Xiqi Gao , Jiangzhou Wang

The increasing demand for wireless data transfer has been the driving force behind the widespread adoption of Massive MIMO (multiple-input multiple-output) technology in 5G. The next-generation MIMO technology is now being developed to…

Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, has emerged as a promising technology for sixth-generation (6G) wireless networks. This letter introduces an indoor channel measurement campaign…

Signal Processing · Electrical Eng. & Systems 2025-11-06 Yingjie Xu , Xuesong Cai , Sara Willhammar , Fredrik Tufvesson

Reliability is becoming increasingly important for many applications envisioned for future wireless systems. A technology that could improve reliability in these systems is massive MIMO (Multiple-Input Multiple-Output). One reason for this…

Signal Processing · Electrical Eng. & Systems 2020-04-16 Sara Gunnarsson , José Flordelis , Liesbet Van der Perre , Fredrik Tufvesson

Antenna selection in Massive MIMO (Multiple Input Multiple Output) communication systems enables reduction of complexity, cost and power while keeping the channel capacity high and retaining the diversity, interference reduction, spatial…

Information Theory · Computer Science 2018-05-15 Harun Siljak , Irene Macaluso , Nicola Marchetti

Future wireless communication systems are envisioned to support ultra-reliable and low-latency communication (URLLC), which will enable new applications such as compute offloading, wireless real-time control, and reliable monitoring.…

Signal Processing · Electrical Eng. & Systems 2026-04-01 Christian Nelson , Sara Willhammar , Fredrik Tufvesson

Benefitting from the vast spatial degrees of freedom, the amalgamation of integrated sensing and communication (ISAC) and massive multiple-input multiple-output (MIMO) is expected to simultaneously improve spectral and energy efficiencies…

Information Theory · Computer Science 2024-01-18 Ruoyu Zhang , Lei Cheng , Shuai Wang , Yi Lou , Yulong Gao , Wen Wu , Derrick Wing Kwan Ng

Low-Power Wide-Area Networks operating in the unlicensed bands are being deployed to connect a rapidly growing number of Internet-of-Things devices. While the unlicensed sub-GHz band offers favorable propagation for long-range connections,…

Signal Processing · Electrical Eng. & Systems 2020-12-04 Gilles Callebaut , Sara Gunnarsson , Andrea P. Guevara , Fredrik Tufvesson , Sofie Pollin , Liesbet Van der Perre , Anders J Johansson

The spectral efficiency of wireless networks can be made nearly infinitely large by deploying many antennas, but the deployment of very many antennas requires new topologies beyond the compact and discrete antenna arrays used by…

Information Theory · Computer Science 2022-03-29 Emil Björnson , Luca Sanguinetti

Multiple antennas have been exploited for spatial multiplexing and diversity transmission in a wide range of communication applications. However, most of the advances in the design of high speed wireless multiple-input multiple output…

Information Theory · Computer Science 2017-04-26 Yongpeng Wu , Chengshan Xiao , Zhi Ding , Xiqi Gao , Shi Jin

We showcase the practicability of an indoor positioning system (IPS) solely based on Neural Networks (NNs) and the channel state information (CSI) of a (Massive) multiple-input multiple-output (MIMO) communication system, i.e., only build…

Signal Processing · Electrical Eng. & Systems 2019-05-29 Mark Widmaier , Maximilian Arnold , Sebastian Dörner , Sebastian Cammerer , Stephan ten Brink

The objective of the Enhanced Mobile Broadband use case in 5G networks is to deliver high capacity access to densely populated areas, like city centres, transportation hubs or convention centres. Millimetre-wave communications are the go-to…

Information Theory · Computer Science 2020-02-27 Fadhil Firyaguna , Jacek Kibilda , Carlo Galiotto , Nicola Marchetti

We present a new type of wireless access infras-tructure consisting of a fabric of dispersed electronic circuitsand antennas that collectively function as a massive, distributed antenna array. We have chosen to name this new wireless…

Signal Processing · Electrical Eng. & Systems 2020-01-17 Liesbet Van der Perre , Erik G. Larsson , Fredrik Tufvesson , Lieven De Strycker , Emil Björnson , Ove Edfors

Large-scale multiple-input multiple-output (MIMO) holds great promise for the fifth-generation (5G) and future communication systems. In near-field scenarios, the spherical wavefront model is commonly utilized to accurately depict the…

Signal Processing · Electrical Eng. & Systems 2024-10-14 Hao Jiang , Wangqi Shi , Xiao Chen , Qiuming Zhu , Zhen Chen

Densifying the network and deploying more antennas at each access point are two principal ways to boost the capacity of wireless networks. However, due to the complicated distributions of random signal and interference channel gains,…

Information Theory · Computer Science 2017-05-03 Xianghao Yu , Chang Li , Jun Zhang , Khaled B. Letaief