KT and ArrayComm Announce Collaboration on Enhanced WiBro Services

Joint effort to apply multi-antenna signal processing (MAS) to KT’s new mobile broadband network

Aug 15, 2006 – SEONGNAM CITY, SOUTH KOREA and SAN JOSE, CALIFORNIA

KT Corporation and ArrayComm LLC announced today their agreement to collaborate on improving KT’s new mobile broadband WiBro network by integrating multi-antenna signal processing technologies.

KT, South Korea’s largest telecommunications service provider, is building an advanced mobile broadband service in the 2.3 GHz band. Using this license, KT is leading in the effort to deploy WiBro to meet the consumer and business demand for mobile broadband in South Korea. ArrayComm multi-antenna signal processing software (A MAS™) is being incorporated in WiBro and WiMAX client devices and base stations by multiple manufacturers to reduce costs and improve performance.

KT recognizes that attractive system economics, driven by good coverage, client data rates, and capacity, will be vital to the success of WiBro services. ArrayComm and KT teams will conduct joint efforts to demonstrate how ArrayComm software can provide benefits for KT’s WiBro initiative. These joint efforts include:

• Modeling the capital and operating financial benefits from application of MAS in WiBro;
• Incorporating MAS algorithms into KT’s network planning in order to understand the coverage, client data rate, and capacity benefits that MAS can bring to WiBro services;
• Conducting field trials in Q4 2006 of MAS-enabled products to validate performance characterization and refine product requirements; and
• Making continuing contributions to the industry’s standards bodies to further enhance WiBro’s leverage of MAS technology.

“We expect that ArrayComm’s A-MAS software will give a significant performance improvement in the WiBro system” noted JongLok Yoon, Senior Executive Vice President at KT. “We are interested in knowing more about the benefits for our WiBro service.”

“KT’s bold strategy for mobile broadband is charting a new course for service innovation and applications that will delight their customers,” observed Martin Cooper, ArrayComm’s Executive Chair. “We are honored to work with the KT team toward making the next phase of wireless successful.”

KT and ArrayComm have agreed to make reports on the results of their collaboration available to others in the industry over the coming year.

About KT

The KT Corporation (KT) was established on December 10, 1981, KT has since become Korea’s leading telephone service provider with nationwide coverage for fixed-line communication networks and over 20 million subscribers. Today, the company has set its sights on becoming a global Internet service provider through ongoing technology development and management innovation. KT has more than 6 million high speed Internet subscribers through the xDSL and metro Ethernet as well as WiFi. KT is now beginning to provide mobile broadband wireless access services based on the WiBro/mobile WiMAX technology. For more information, please visit www.kt.co.kr.

About ArrayComm

ArrayComm LLC, a Ygomi company, is the leader in multi-antenna signal processing (MAS) software for wireless systems. ArrayComm’s A MAS software improves network economics and user experiences through gains in coverage, client data rates, and capacity for all wireless communications protocols, in base station, client device, or MIMO architectures. A MAS implementations include WCDMA, HSDPA, WiMAX, PHS, GSM, WLL, and HC-SDMA networks and are operating in more than 275,000 commercial deployments today. For wireless equipment manufacturers, tapping ArrayComm’s unmatched experience in MAS applications enables significant performance and time-to-market advantages while reducing development cost and technical risk. For more information, please visit www.arraycomm.com.

ArrayComm and A MAS are trademarks of ArrayComm LLC. Other names are trademarks of their respective holders.

For KT:
Seong-Choon Lee, +82.2.526.6153, lsc@kt.co.kr

For ArrayComm:
Steven Glapa, +1.408.952.1958, sglapa@arraycomm.com