"Ericsson will roll out a complete 4G/LTE solution, including radio access and core network equipment, as well as managed services," the company said in a statement.
Fourth generation mobile phone technology was introduced in late 2009 in Stockholm and Oslo by operators TeliaSonera and Ericsson. But its debut has been partially hampered by the absence of telephones compatible with the new standard, which has meant that the offer has been limited to Internet access.
Industry analysts have said the real breakthrough was not likely until 2012-2013.
LTE technology, which is to gradually replace Third Generation systems, enables faster access to mobile Internet services and should support the development of television, videos and photos on mobile phones.
TDC has said it wants to introduce 4G in six cities, including Copenhagen, in January 2011.