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NTT DoCoMo Tests 4G Technology

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Oct 10, 2002, 5:41 PM   by (staff)

NTT DoCoMo, Japan's top mobile phone operator, said yesterday it had successfully completed a transmission experiment for fourth-generation (4G) mobile communications. The transmission, conducted in an indoor environment, allowed for a downlink of 100 Mbps and an uplink of 20 Mbps. Since 4G employs such a broad bandwidth, however, the service often degrades as secondary signals bounce off surrounding objects. DoCoMo said it plans to use a variety of technologies to avoid such problems. The current schedule calls for developing key 4G technologies by 2005, with commercial deployment in 2010.

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