NEWS from ESEX - moving strong . . .
COLUMBIA, Md., Jun 7, 2000 /PRNewswire via COMTEX/ -- Essex Corporation (OTC
Bulletin Board: ESEX.OB) today announced that it has filed applications to
secure patent protection for innovative technologies in two communications
device families. These are fiberoptic Hyperfine Wave Division Multiplex (HWDM)
channelizers and wireless Optimal Code Division Multiple Access Receivers
(OCDMAR). The purpose of the HWDM is to increase the number of usable
communications channels within a single optical fiber. The purpose of the OCDMAR
is to increase capacity and improve voice and data quality of wireless systems.
As previously announced, Essex is building an HWDM proof-of-concept
demonstration under the terms of a $350,000 U.S. government contract. The
Company believes that it is possible to produce HWDM devices capable of
providing more than 1000 channels in a single optical fiber. The possible
applications of such devices include enabling more dense utilization of optical
fiber capacity in "last mile" connections to small business and personal users.
Essex engineers also believe that a related HWDM device can be used to reduce
the number of signal regenerators required in long-haul lines.
Code Division Multiple Access (CDMA) uses code diversity to separate multiple
users within a limited range. Such inefficiencies within this process as the
"near-far" problem limit practical implementation of CDMA systems well below
their theoretical capacities. The OCDMAR is designed to achieve wireless
performance approaching signal to noise (CNR) rather than signal to interference
(CNI). Two Essex optical devices may provide critical enabling components for an
optimal CDMA receiver. One, for use in a cellular CDMA handset, is a small,
low-power chipset that can facilitate cancellation of all interferers and the
summation of all multipath copies of the desired signal. That device would
operate at CDMA chip rates from 10 kHz to 30 MHz. The other somewhat larger
device performs the same functions at CDMA chip rates of 5 MHz to 2 GHz.
Applications of that device to wireless local area networks (WLAN), including
last-mile fiberoptic signal distribution, can be an enabler of the
Web-Without-Wires. Company development of its OCDMA devices is limited pending
establishment of an industrial partnership.
Harry Letaw, Chairman and CEO, stated, "Consistent with our intention to
capitalize upon these inventions, we are expanding our provisional applications
and perfecting the protection of this intellectual property. This new field of
interest is a welcome addition to our continuing activities in applying
optoelectronics to solve problems in radar, MRI, laser and acoustic imaging and
defense radar systems."
Essex Corporation is a publicly traded company that develops and produces
high-speed optoelectronic processors for imaging, signal processing and
communications systems, and supplies advanced processing and communications
engineering for government and private industry. Additional information is
available on our Web site at www.essexcorp.com , or by calling 800-53ESSEX.
This press release contains forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934. The Company's actual results could differ materially from
those discussed in or implied by such forward-looking statements. Factors that
might cause such differences include but are not limited to the ability of Essex
Corporation to raise the necessary development funds and to enter into strategic
relationships with key industry participants, the ability of Essex to develop,
build and improve telecommunications devices, the ability of Essex to protect
and defend its intellectual property, changes in technology and technical
obsolescence, changes in customer needs, new product developments, competitive
factors in the industry and uncertainty of market acceptance.
SOURCE Essex Corporation
CONTACT: Harry Letaw, Chairman & CEO of Essex Corporation, 301-939-700
URL: essexcorp.com
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