cfoe. On HDR>2.4 Mbps. There appears to be an effort to push beyond 2.4Mbps.
JohnG
eetimes.com
Samsung to support 15-Mbit/s
synchronous services in 2001
By Yoonhee Park
EE Times
(07/05/00, 4:58 p.m. EST)
SEOUL, South Korea — Samsung expects to deliver third-generation
(3G) cellular systems next year that support services with data
rates up to 15 Mbits/second, exceeding the maximum 2-Mbit/s rate
typical of 3G systems that follow the International Mobile
Telecommunications (IMT) standard for services using the 5-MHz
spectrum band.
Samsung's work is based on the IMT-2000 standard being
hammered out by the Third Generation Partnership Project 2
(3GPP2). The systems would be based on an extension to the 1X EV
technology that the 3G project is now developing. That technology
ensures data service up to 5.2 Mbits/s using a 1.25-MHz band, the
same chunk of bandwidth used by today's CDMA-based cellular
systems.
The 3GPP2 group expects to offer a 3X version of the technology
that delivers 5.2 Mbits/s over a 5-MHz swath of spectrum, Samsung
said. The company claims that the use of synchronous technology
will provide more than a sevenfold efficiency gain compared with the
asynchronous method used in 3G systems that deliver data rates of
2 Mbits/s.
The synchronous approach will also allow more-flexible systems that
can support standards like those coming for both the 1X EV and
cdma2000 technologies, Samsung said. This approach will make it
easier for service providers to upgrade from one service to the next
or to increase the number of subscribers without replacing
underlying hardware.
OEMs here have almost completed cellular systems based on the
cdma2000 1X (IS-95C) specification, which can provide a basic
platform for synchronous IMT-2000 services. These systems are
expected to be commercially available in October.
Major IT companies in South Korea, including SK Telecom and LG
Telecom, are preparing to support cdma2000 1X (IS-95C) services,
which are expected to go live here in the second half of this year.
Korea's equipment manufacturers hope to beat competing systems
from suppliers outside Korea by as much as three months.
The 1X EV systems, meanwhile, are slated to be available in the
second half of 2001, when that standard is expected to come to a
final vote.
For its part, LG Telecom started its development of wideband CDMA
systems in 1999. However, the work is not expected to be finished
until late 2002 at the earliest.
Exclusive to EE Times by Chom Dan Inc. (Seoul, South Korea). |
