Channel state information is data about the current condition of a communications path—how signals are being affected by things like distance, obstacles, interference, or noise—so transmitters can adapt power, timing, or coding. Think of it as a weather report for a road: knowing whether the route is clear or congested lets drivers choose the best speed and lane. For investors, accurate channel state information matters because it directly influences product performance, network capacity, and operating efficiency, which can affect service quality, deployment costs, and revenue potential.
multiple-input multiple-outputtechnical
Multiple-input multiple-output (MIMO) is a wireless technology that uses several antennas at both the transmitter and receiver to send and pick up multiple data streams at the same time, increasing speed and reliability. For investors, MIMO matters because it boosts network capacity and device performance—like adding extra lanes and entrances to a highway—affecting product competitiveness, infrastructure needs, and potential revenue or cost for companies in the telecom and device supply chain.
mimotechnical
MIMO stands for multiple-input multiple-output, a wireless technology that uses multiple transmitters and receivers to send and receive data at the same time. Think of it like several lanes on a highway letting more cars travel simultaneously and avoiding traffic jams. For investors, MIMO matters because it improves network speed and reliability, which can drive demand for telecom equipment, services and devices and influence revenue growth in wireless-related companies.
3gppregulatory
3GPP is a global standards group that creates the technical rules enabling mobile networks and devices to work together — think of it as the rulebook for how phones, antennas and networks speak the same language. Investors care because these standards shape which technologies gain wide adoption, influence network rollouts, and affect patent licensing and equipment markets, all of which can change revenue and costs across telecom companies.
beamformingtechnical
Beamforming is a technology that steers wireless signals in a focused direction so devices receive stronger, clearer connections instead of spreading radio waves everywhere. Think of it like aiming a flashlight beam at a specific person rather than lighting an entire room: it boosts speed, range, and reliability while reducing interference. For investors, beamforming matters because it can improve product performance, enable new services, lower network costs, and create competitive advantages for companies selling chips, equipment, or connectivity services.
modem-rftechnical
Modem-RF is the combined electronic system that converts digital data into radio signals and vice versa, bringing together the modem’s signal processing and the radio-frequency hardware that actually sends and receives wireless transmissions. For investors, it matters because this component largely determines a device’s wireless speed, range and battery use—like a car’s engine and transmission for connectivity—and therefore affects product competitiveness, supplier margins and market demand.
Joint lab validation shows more than 40 percent downlink throughput gain versus standardized channel feedback in four-layer (rank-4) operation
SANTA ROSA, Calif.--(BUSINESS WIRE)--
Keysight Technologies, Inc. (NYSE: KEYS) has collaborated with Qualcomm Technologies, Inc. to demonstrate machine learning (ML)-based Channel State Information (CSI) compression to enhance link adaptation efficiency in advanced Multiple-Input Multiple-Output (MIMO) systems at Mobile World Congress (MWC) Barcelona 2026. In a controlled lab validation, the ML-based CSI feedback method achieved more than 40 percent downlink throughput improvement compared to 3GPP eType II CSI reporting in four-layer (rank-4) operation. The demonstration will be featured live at the Keysight booth (Hall 5, #5F41).
As 5G-Advanced networks use more antennas and wider channels, CSI becomes increasingly important in how the network steers beams and selects the right transmission settings. However, sending more detailed CSI can increase uplink reporting overhead, especially for higher-layer MIMO, creating a tradeoff between performance and signaling efficiency.
To address this, Keysight and Qualcomm Technologies tested a mobile test platform powered by a Qualcomm® 5G Modem-RF, together with Keysight’s network emulation solutions in a repeatable lab environment. Under fixed CSI feedback constraints, the ML-based compression method provided a more efficient channel representation than the standardized eType II method while maintaining the information needed for accurate beamforming and link decisions. The result supports scalable advanced MIMO configurations and contributes to industry work exploring AI-native physical-layer enhancements for future 6G wireless systems.
Tingfang Ji, Vice President of Engineering and Head of 6G Research at Qualcomm Technologies, Inc., said: “Efficient CSI feedback is fundamental as antenna dimensions and spatial layers increase. This demonstration shows how Qualcomm’s advanced machine learning algorithms can significantly improve downlink performance over conventional eType II CSI reporting, supporting continued 5G-Advanced innovation and laying the foundation for future AI-native 6G systems.”
Lucas Hansen, Vice President and General Manager, Wireless Test Group, Keysight, said: “AI-native enhancements at the physical layer are essential to scaling next-generation wireless networks. By combining Qualcomm’s modem test platform with our AI-enabled base station emulation solutions, we are enabling rigorous evaluation of ML-based CSI compression and its impact on advanced MIMO performance and 6G research directions.”
Qualcomm branded products are products of Qualcomm Technologies, Inc. and/or its subsidiaries. Qualcomm is a trademark or registered trademark of Qualcomm Incorporated.
About Keysight Technologies
At Keysight (NYSE: KEYS), we inspire and empower innovators to bring world-changing technologies to life. As an S&P 500 company, we’re delivering market-leading design, emulation, and test solutions to help engineers develop and deploy faster, with less risk, throughout the entire product life cycle. We’re a global innovation partner enabling customers in communications, industrial automation, aerospace and defense, automotive, semiconductor, and general electronics markets to accelerate innovation to connect and secure the world. Learn more at Keysight Newsroom and www.keysight.com.
