Tanzania Telecommunications Company Ltd (TTCL) and Zanzibar Telecommunications Ltd (Zantel) will soon start using the Division Multiple Access (CDMA) system, which is superior to the global system for mobile communications (GSM).
CDMA, the system widely used in America and Japan, is an advanced technology for transmitting simultaneous signals over a shared portion of the spectrum.
It requires fewer cell sites than GSM, and has a calling capacity of between three and five times more.
Its frequencies can also beam easily over difficult terrain such as mountains.
While digital systems divide the spectrum into different time slots, CDMA's spread spectrum technique overlaps every transmission on the same carrier frequency by assigning a unique code to each conversation.
According to TTCL communications manager Issa Semtawa, his firm will start using the wireless technology from April, a move he says will help expand his firm's customer base.
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