Exhibit 1

5412-EX-PL-1996 Text Documents

CWILL TELECOMMUNICATIONS, INC.

1999-07-23ELS_11535

Exhi bit # 1 Adaptive Array Antenna for Personal Communication Services Cwill Telecommunications, Inc. has developed a novel wireless communication protocol based on adaptive array antennas (smart antennas). The goal ofthe protocol is to increase the capacity of bandwidth by the order of ten, when compared with the existing commercialized digital wireless communication protocol, such as GSM, IS—54/136, or IS—95. The secondary goal is to apply a min— imum amount oftransmission power to cover the pre—defined area. The major benefits by using the minimum transmission power are two folds, 1) lower cost on the overall system, and 2) less inter— ference among neighbor cells in the cellular communications. The experimental system consists of a base station and multiple mobile stations. The system employs Synchronous Code Division Multiple Access (SCDMA) as a basic channel access method. The uplink and downlink work in the same frequency range with the different time slots, also called Time Division Duplex (TDD). The antenna array in the base station receives the signals from mobile stations and electronically combines the signals from the elements of the antenna array in the specified time period. In the transmission phase, the received signals are used for gen— erating transmission weighting pattern and direct magnetic wave to the specified mobile stations. The objectives of the experiment are to verify the performance of the protocol in two aspects: capacity and minimum power transmission. The experimental system is the first commercialized adaptive array antenna wireless communi— cation system in the world. This is not explored virgin island in the wireless communication indus— try. The experiment has a significant meaning for improving the channel quality, increasing capacity, and reducing the overall system cost. It represents a trends in wireless communication research and it is an unique way to improve the system performance in the next generation ofwire— less communication systems. u 4030 West Braker Lane, Suite 555, AUSTIN, TEXAS 78759 Tel: 512—346—5624 Fax: 512—346—7940


Document Created: 2001-08-20 09:13:58
Document Modified: 2001-08-20 09:13:58
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