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To: gdichaz who wrote (719)	9/30/1998 9:06:00 PM
From: Bernard Levy	Read Replies (1) \| Respond to of 5853

Chaz: Regarding the themes of the report: a) Software radios: If you read the inside of the report, the authors hope that DOD research and development will drive the commercial sector, since full software radios will first be needed by the military. They indicate that commercial products will only incorporate partial software features, such as programmable carrier frequencies, bandwidths, and perhaps modulation schemes. I am wondering which companies (P-com? LU?) can be viewed as leaders in incorporating software features in radio products. Would love to hear the views of regulars on this thread. b) Smart antennas are actually probably more useful at PCS/WLL frequencies than at frequencies above 20GHz, since multipath effects are more significant at low frequencies. Smart antenna companies include Arraycomm, Clarity Wireless (now part of CSCO), and all companies involved on DOD antenna work: Applied Signal Technology, Argos Systems (part of Boeing), Saunders (part of Lockheed). I would love to hear about additions to the above list. c) Smart waveforms: in addition to the standard frequency hopped and direct sequence spread spectrum techniques, I am aware of highly speculative academic research using fractal/chaotic signals, or wavelets, as spreading sequences. Another very nice work involves communications with ultra short pulses which do not even require any carrier. These pulses are so short they bypass the multipath problem entirely (the pulse duration is shorter than the time delay of alternate signal paths). Best regards, Bernard Levy