By Supantha Mukherjee and Louise Rasmussen STOCKHOLM (Reuters) -Nvidia will pay $1 billion for a stake of 2.9% in Nokia as part of a deal focused on AI and data centers, the Finnish telecom equipment maker said on Tuesday as its shares hit their highest level in nearly a decade. Nokia said the companies will collaborate on artificial intelligence networking solutions and explore opportunities to include its data center communications products in Nvidia's future AI infrastructure plans. Capital expenditure on data center infrastructure is expected to exceed $1.7 trillion by 2030, consulting firm McKinsey estimates, largely because of the expansion of AI. Nvidia has a near-monopoly in supplying chips for data centers and has partnered with companies ranging from OpenAI to Microsoft. Nvidia C

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