ArrayComm demonstrates major cost and performance improvements in Japanese field trials.

SAN JOSE, Calif.--(BUSINESS WIRE)--March 3, 1997--

IntelliCell-enhanced cell stations increase PHS coverage and

capacity

ArrayComm Inc. has accelerated the ramp-up of private field trials testing its patented IntelliCell cell station in a Personal Handyphone System (PHS) with DDI Tokyo Pocket Telephone and Kyocera Corp.

The ramp-up calls for IntelliCell-equipped cell stations to provide extended urban coverage, running from a network operations center in Yokahama.

The ramp-up reflects growing pressures on DDI to increase network system capacity in response to unprecedented consumer demand for the low-mobility wireless system. The PHS system in Japan grew from zero subscribers in July 1995 to more than 5 million today, and continues its explosive growth.

ArrayComm's adaptive antenna system is being utilized to provide wide area coverage and to double the capacity of the existing network. It is the first such field trial of ArrayComm's IntelliCell technology, which uses multiple antennas to handle both voice and control channels.

"We are excited about the opportunity to test our system in one of the most demanding real-world applications," said Karl Martersteck, president and chief executive officer of ArrayComm. "PHS represents the first broad-scale implementation of this breakthrough technology."

Martersteck said DDI has committed to conducting larger field trials and he expects a definitive agreement by second quarter of this year. He added that, based on current field trial test results and worldwide demand, Kyocera has also begun to ramp up manufacturing this cell station, which incorporates ArrayComm's IntelliCell technology.

"We have already seen IntelliCell cell stations provide a five-fold capacity improvement over low-power PHS stations. These results demonstrate that even if a low-power cell station were provided at zero cost, it will still cost an operator much more to operate a low-power network than if an ArrayComm system were deployed from the outset," emphasized Martersteck.

DDI holds a nationwide license in Japan to provide PHS service and is the largest PHS operator worldwide. Kyocera is a leading supplier of PHS infrastructure equipment and terminals. PHS continues to grow at the rate of 315,000 subscribers per month with more than 5 million subscribers now using the service.

ArrayComm is the leading global source of adaptive wireless communications solutions. The company's revolutionary patented IntelliCell processing platform combines an innovative digital signal processing system with multiple antennas to dramatically enhance wireless system performance and economics.

This unique approach to wireless access enables operators of PCS, cellular and wireless local loop networks to realize unparalleled increases in signal quality, capacity and coverage, by automatically adapting to the complexities of the environment and continuously enhancing the users' signals in real time.

The IntelliCell processor is compatible with all wireless standards. ArrayComm holds several patents on its IntelliCell technology and has applied for several more.

From the IntelliCell processor to innovative wireless local loop systems, ArrayComm is helping to make high-quality wireless communications truly affordable for mass markets worldwide.

CONTACT: ArrayComm Inc., San Jose

Christine M. Oliver, 408/952-1865

408/428-9083 (fax)

[e-mail] (e-mail)

or

McQUERTERGROUP, San Diego 

Aaron Heinrich, 619/450-0030

619/450-3140 (fax)

[e-mail] (e-mail)