China Unicom, struggling with its code division multiple access (CDMA) business at home, has won a licence to build a 250 million yuan mobile network in Macau based on the same technology. The company's first such investment outside the mainland will be the only CDMA network in Macau, whose 448,500 population is already served by three GSM operators. Executive director and vice-president Zhao Le said CDMA roaming revenue inside and outside Macau would be a lucrative business for the company, adding that the system was an important mobile standard used by large markets such as South Korea, Japan, North America and the mainland. 'It will also benefit our China CDMA business, as then we can get high-end users who travel to Macau frequently,' Mr Zhao said. Unicom won the licence from four other bidders, including SmarTone Telecommunications Holdings and Macau's leading operator, Companhia de Telecomunicacoes de Macau. Unicom will invest 170 million yuan to introduce the network, offering only CDMA roaming in the first year before going city-wide with its 2.5G mobile service. Last month, Unicom said new subscriber growth for January fell to 1.44 million, from 1.53 million in December, the third consecutive month-on-month decline. It had about 28.37 million CDMA users.