Sprint Explores Options for WiMax

Sprint Nextel Corp. is exploring new options for financing its ambitious plan to build a wireless broadband network known as WiMax, including forming a partnership or joint venture with cellphone pioneer Craig McCaw and seeking an infusion of cash from cable providers, people familiar with the matter say.

The steps are partly an effort to soothe investor concerns about the cost of the WiMax plan. Sprint has committed to spending about $3 billion through next year to build a network that will offer high-speed wireless Internet access to 100 million people.