TOP PAGE
ENGLISH
JAPANESE
|
CONNECT WITH US:
Home
About
Services
Contact
Log in
*
Home
Press release
Jul 10, 2023 13:19 JST
Source:
NEC Corporation
NEC demonstrates advantages of distributed-MIMO in ultra-high-density user environments
TOKYO, Jul 10, 2023 - (JCN Newswire) - NEC Corporation (NEC; TSE: 6701) has conducted verification tests to evaluate the performance of massive-MIMO (mMIMO)(1) utilizing the 28GHz band. During these tests, NEC verified mMIMO's ability to reliably provide large-capacity transmission in environments with extremely high user densities of 4 to 8 users per square meter, such as stadiums and crowded urban areas. Moreover, the tests demonstrated that distributed-MIMO configurations(2) can maintain better data transmission than conventional collocated-MIMO configurations(3).
mMIMO mobile access base stations enable multiple simultaneous user connections and achieve higher cell capacity with a combination of spatial, time division and frequency division multiplexing. Using a 28GHz-band prototype device(4), NEC quantitatively compared users' signal-to-noise ratio (SNR) in both distributed-MIMO and collocated-MIMO using a newly developed index for this demonstration.
The SNR of spatial multiplexing in mMIMO is influenced by the amount of leaked power from beams to other users in the same cell. However, in comparison to collocated-MIMO configurations, NEC confirmed that distributed-MIMO could maintain SNR independent of user density depending on the sharpness and level of orthogonality of the beams.
Details on this research have been published and presented at the International Microwave Symposium 2023 in San Diego, CA, USA.
Going forward, in line with the advancement of 5G and the development of 6G, NEC will continue to develop technologies aimed at even higher speeds, larger capacities, and greater cost efficiency.
(1) Massive-MIMO
A Multiple Input Multiple Output (MIMO) technique that enables simultaneous multiple radio communication connections using a massive number of transceivers.
(2) Distributed-MIMO
An approach of Massive-MIMO where a large number of antennas are distributed rather than being placed in a single array.
(3) Collocated-MIMO
A conventional approach of Massive-MIMO where the antenna element and transceivers are arrenged in a location with usually half wavelength intervals.
(4) NEC develops millimeter-wave distributed antenna radio unit improving the channel quality for indoor 5G applications. www.nec.com/en/press/202001/global_20200124_01.html
About NEC Corporation
NEC Corporation has established itself as a leader in the integration of IT and network technologies while promoting the brand statement of "Orchestrating a brighter world." NEC enables businesses and communities to adapt to rapid changes taking place in both society and the market as it provides for the social values of safety, security, fairness and efficiency to promote a more sustainable world where everyone has the chance to reach their full potential. For more information, visit NEC at www.nec.com.
Source: NEC Corporation
Sectors: Telecoms, 5G, Wireless, Apps
Copyright ©2025 JCN Newswire. All rights reserved. A division of Japan Corporate News Network.
Related Press Release
Executive Appointments in Connection with the Establishment of NESIC Holdings
June 23 2025 18:22 JST
NEC and Chugai Pharmaceutical use AI to potentially enhance cancer treatment
June 18 2025 12:40 JST
Transgene and NEC Present Durable Disease-Free Survival and Sustained T Cell Responses at 24 months with Individualized Cancer Vaccine TG4050
June 02 2025 16:56 JST
IFS and NEC Strengthen their Strategic Partnership to Create New Value
May 30 2025 09:11 JST
NEC DGDF Headquarters relocates to Zurich to accelerate growth and enhance management globally
April 28 2025 15:03 JST
NEC invests in U.S.-based "Geodesic Alliance Fund" aiming to strengthen economic security business
April 24 2025 09:23 JST
NEC Face Recognition Ranks First in NIST Accuracy Testing
April 09 2025 10:09 JST
NEC Orchestrating Future Fund invests in Rescale, Inc., provider of a leading digital engineering platform for cloud high-performance computing (HPC)
April 08 2025 15:42 JST
SITA and NEC Collaborate to Drive Global Adoption of Digital Identities in Travel
April 08 2025 15:11 JST
NEC has developed technologies that enable a secure workflow for personalized cancer vaccines and has proven their capabilities
April 01 2025 15:15 JST
More Press release >>
Latest Press Release
Fujitsu to develop ETF trading platform based on TSE's CONNEQTOR and provide it to Australian Securities Exchange
Jul 03, 2025 11:14 JST
Mitsubishi Motors Launches the All-New Grandis for the European Market
Jul 02, 2025 12:10 JST
Valuufy partners with Mainichi Future Creation Lab, Supporting New Approaches to Business Sustainability
Jul 02, 2025 12:00 JST
Fujitsu launches solution to enhance customers' global supply chain resilience
Jul 02, 2025 11:32 JST
MHI Receives Order to Supply Four Circulating Water Pumps for Units 5 and 6 of Sanmen Nuclear Power Plant in China Under Collaboration with Dongfang Electric Machinery
Jul 02, 2025 11:30 JST
Multi-purpose Arena in Odaiba Aomi Area TOYOTA ARENA TOKYO Construction Completed
Jul 01, 2025 22:56 JST
1Finity, a Fujitsu company, commences operations and reveals brand identity
Jul 01, 2025 22:53 JST
MHI Thermal Systems Begins Field Test of Jointly Developed "Surplus Renewable Energy Absorption and Release System"
Jul 01, 2025 22:40 JST
Japan's Telecommunications Carriers Strengthen Disaster Response Through Collaborative Information Sharing
Jul 01, 2025 22:30 JST
JCB and Mandai Wildlife Group Deepen Partnership with exclusive discounts for JCB cardmembers
Jul 01, 2025 16:00 JST
Fujitsu provides Japan's first AI-powered cloud-based library search service
Jul 01, 2025 11:30 JST
JCB Brings Apple Pay to Cardmembers in Vietnam
Jul 01, 2025 11:15 JST
First Shipment of LNG from the LNG Canada Project
Jul 01, 2025 11:00 JST
Approval in Principle (AiP) for World's First LCO2 / Methanol Carrier
Jun 30, 2025 20:30 JST
Acropolis Rally Greece: Day 4 Sunday success and second overall for TOYOTA GAZOO Racing's Ogier
Jun 30, 2025 20:15 JST
Mitsubishi Fuso-Hino Merger: 4 Firms Collaborate for the Future of Commercial Vehicles
Jun 30, 2025 20:10 JST
Six Companies Establish BlueRebirth Council to Expand Use of Recycled Materials in New Vehicles
Jun 30, 2025 19:25 JST
Honda Changes Plan to Build New Production Plant for Next-generation Fuel Cell Module in Japan
Jun 30, 2025 19:20 JST
MHI-AC&R Receives Recommendation Award of JARAC's 42nd Excellent Energy Saving Equipment Awards
Jun 30, 2025 19:00 JST
The University of Osaka and Fujitsu Japan launch joint research on AI-powered education support for culturally and linguistically diverse children in Japan
Jun 30, 2025 12:00 JST
More Latest Release >>