To guarantee safe train operations and provide passengers with convenience, such as seamless internet service and robust entertainment options, there is an increasing need for high-reliability, high-data-rate wireless communications. Wireless communication technologies, for a significant part, heavily rely on the acquisition of channel state information (CSI), making channel estimation vital to their performance. However, offering satisfactory service to a large user base at high speeds presents various challenges.
An overview of channel estimation technology in high-speed railway communications
