Spectrally efficient TDM duplex communication system

Details Spectrally efficient TDM duplex communication system Spectrally efficient TDM duplex communication system

1989-01-23

1991-03-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 84, 370 951, 370 29, H04J 316, H04J 314

Patent

active

050017039

ABSTRACT:
An improved duplex time division multiplexed (TDM) communication system is provided while conserving spectrum and efficiency. To accommodate two voice signals on one channel, the time allocated in a channel for brief listener voice acknowledgements is short; the time allocated for talker transmission is long. Moreover, the coding rate for the listener is slower than for the talker. The slot allocation can be switched whereby whoever is the dominant talker will maintain the longer slot.

REFERENCES:
patent: 4335455 (1982-06-01), Hirschmann
patent: 4597073 (1986-06-01), Staples
patent: 4686672 (1987-08-01), Namiki
patent: 4754450 (1988-06-01), Lynk, Jr. et al.
patent: 4841521 (1989-06-01), Amada et al.

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