LG and Nortel Demonstrate Technological Prowess at 3GSM World Congress

뉴스 제공

2007-02-12 19:30

Barcelona, Spain--(뉴스와이어)--LG Electronics (LG), a worldwide technology leader in mobile communications, today demonstrated its LTE (Long Term Evolution) technology applied handset in cooperation with Nortel at the 3GSM World Congress in Barcelona, Spain. LTE, one of the most advanced mobile communication technologies to date, is currently in the process of 3G technology standardization by the Third Generation Partnership Project (3GPP), and is expected to be applied to next generation handsets soon.

The demonstration by LG and Nortel is especially meaningful in that it shows the commercial availability of Multi Input Multi Output (MIMO*) - OFDM (Orthogonal Frequency Division Modulation/Multiplexing) based LTE technology. The 2x2 MIMO-OFDM technology used in LG’s handset has the capability of sending 20Mbps for both uplink and downlink on a 5MHz bandwidth. In this demonstration, LG and Nortel showed data transmission at 10Mbps speed between LG’s two LTE handsets and Nortel’s base station. More than twice as fast as HSDPA, which uses the same transmission frequency, this technology could allow high definition video streaming, or downloads as fast as an MP3 file in just over one second. The LTE handset developed by LG increases the possibility of commercial use by reducing complexity without lowering OFDM and MIMO performance. In addition, this world-first demonstration by LG Electronics demonstrates LTE technologies such as uplink multi-user MIMO and SC-FDMA* with low complex MIMO detection technique.

LTE is a 3GPP standard technology toward IMT-Advanced, and it is in the process of finalizing standardization by September 2007. Its core technology is based on OFDM and MIMO which are better for transmitting broadband data over CDMA networks and for maximizing spectral efficiency.

This demonstration is expected to accelerate the commercialization of MIMO-OFDM technology, which is the base of the 3G LTE system, and showcase the leading roles played in the market by LG Electronics and Nortel.

About MIMO*

Multi Input Multi Output (MIMO) is the signal processing technology using the multiple antennas both in transmitter and receiver. Wireless MIMO communication can enhanced the peak data transmission rate by using spatial multiplexing method. This technology can expand the capability of wireless communication and greatly increasing transmission speed. Especially in a multiuser MIMO (MU-MIMO) system, a single base station can transmit to multiple mobile stations simultaneously to increase the sum data-rate and reduce the latency of mobile users.

About OFDM**

Orthogonal Frequency Division Multiple Access (OFDMA) is a multi-user version of the popular OFDM technology which allocates data by separating frequency and time. Multiple access is achieved in OFDMA by assigning subsets of subcarriers to individual users in frequency and time domain. In OFDM system, since a wide channel is divided into several ones, overall bandwidth is saved by overlapping sub channels than in conventional FDMA. Because of these advantages, it has been adopted as standard technology in many wireless broadband systems.

About SC-FDMA***

Single carrier frequency division multiple access (SC-FDMA), which uses single carrier modulation and frequency domain equalization, is a technique that has similar performance and essentially the same overall complexity as those of OFDMA system. One prominent advantage over OFDMA is to provide peak-to-average power ratio (PAPR) because of its single carrier structure. SC-FDMA has been great attention as an attractive alternative to OFDMA, especially in the uplink communications where lower PAPR greatly benefits the mobile device in terms of transmit power efficiency.

About LG Electronics, Inc.

LG Electronics, Inc. (KSE: 06657.KS) is a global leader and technology innovator in consumer electronics, home appliances and mobile communications, employing more than 82,000 people working in over 120 operations including 80 subsidiaries around the world. Comprising four business units -- Mobile Communications, Digital Appliance, Digital Display and Digital Media with 2006 global sales of US $38.6 billion -- LG Electronics is the world’s largest producer of CDMA handsets, air conditioners, optical storage products, DVD players and home theater systems. For more information, please visit www.lge.com

LG Electronics Mobile Communications Company (LG) is a leading producer of UMTS (WCDMA), CDMA and GSM handsets. LG draws upon its cutting-edge technology and innovative handset design capabilities to create a higher quality mobile environment for its customers around the world. With a total range of wired and wireless solutions, LG is rapidly expanding its presence and market share in the global mobile industry.

LG Electronics 개요
LG Electronics Inc., (KSE: 06657.KS) is the leader in consumer electronics and mobile communications. The company has more than 72,000 employees working in 77 subsidiaries and marketing units around the world. LG Electronics is the world’s largest producer of CDMA handsets, residential air conditioners, optical storage devices and home theatre systems. With total revenue of more than USD 35 billion (consolidated USD 45 billion), LG Electronics is comprised of four business units: Mobile Communications, Digital Appliance, Digital Display and Digital Media. For more information, please visit www.lge.com.

웹사이트: http://www.lge.com