Fujitsu Delivers New IMT-2000 Base Stations with Four Times Data
Capacity for NTT DoCoMo's 3G Network
September 19, 2002
Fujitsu announced it has begun providing new base transceiver station
equipment for NTT DoCoMo's IMT-2000 3G mobile communications network
since July 11. The new base stations, which have the capacity to
handle more than 2,880 channels (*1), or quadruple the capacity
of existing equipment, were developed jointly by Fujitsu, Hitachi
Kokusai Electric and NTT DoCoMo.
The new base station equipment uses a high-speed channel signal
processor and a high-efficiency transmitter amplifier built with
new distortion-compensation technology developed by Fujitsu and
Fujitsu Laboratories, announced September 5. These components are
highly compact and enable a dramatic reduction in power consumption.
As a result, the equipment achieves four times the channel capacity
with the same amount of power and space requirements as previous
models.
The new equipment also offers the operating advantage of greater
flexibility in scaling the number of channels in accordance with
increases in demand. In addition to accommodating voice communications,
it provides ample channels for 384-Kbps high-speed packet data transmission.
Fujitsu has developed and commercialized base transceiver station
equipment for NTT DoCoMo from the earliest stages. As the use of
high-speed packet transmission for the Internet and other applications
has become widespread in mobile environments, Fujitsu has met the
evolving needs of the market by developing equipment that can handle
growing capacity requirements.
Fujitsu's new base transceiver station equipment boasts the following
special advantages:
1. High-density/ high capacity - Advanced semiconductor and high-speed
channel signal-processing technologies enable four times the channel
capacity in the same size as previous models.
2. Low power consumption - The development of a high-efficiency
transmitter amplifier using new distortion-compensation technology
based on the digital pre-distortion method makes the new equipment
highly energy efficient, with power consumption on par with previous
models.
3. Superior scalability - Whether for suburban areas with light
traffic or urban areas with heavy traffic, the number of channels
can be easily expanded as needed, keeping initial investment costs
down.
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