Abstract: In this paper, we investigate the uplink sum rate maximization problem in an intelligent reflecting surface (IRS)-assisted multiple-input multiple-output (MIMO) non-orthogonal multiple ...

January 17, 2026 • In a post on social media, Trump said a 10% tariff will take effect on Feb. 1, and will climb to 25% on June 1 if a deal is not in place for the United States to purchase Greenland.