Method and apparatus for compressing and transmitting high speed

Details Method and apparatus for compressing and transmitting high speed Method and apparatus for compressing and transmitting high speed

1996-11-07

2000-08-29

Rao, Seema S.

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

370337, 370468, 370526, 358434, 379 9309, 455452, 455509, H04B 7212, H04J 316, H04J 400, H04J 312

Patent

active

061118702

ABSTRACT:
Two related voiceband compression techniques are employed in order to enable an RF telecommunications system to accommodate data signals of high speed voiceband modems and FAX machines. A High Speed Codec enables the telecommunications system to pass voiceband modem and FAX transmissions at up to 9.6 kb/s. An Ultra-High Speed Codec supports voiceband modem and FAX transmissions up to 14.4 kb/s. The High Speed Codec operates using three 16-phase RF slots or four 8-phase RF slots, and the Ultra-High Speed Codec operates using four 16-phase RF slots. Because these codecs transmit information over several RF slots which can be contiguous, the slots within RF communication channels are dynamically allocated. The Dynamic Timeslot/Bandwidth Allocation feature detects and monitors the data transmission and forms a data channel from the necessary number of slots.

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