System for TDMA mobile-to-mobile VSELP codec bypass

Details System for TDMA mobile-to-mobile VSELP codec bypass System for TDMA mobile-to-mobile VSELP codec bypass

1994-12-19

1998-06-16

Vo, Don N.

Pulse or digital communications

Transceivers

370287, 370522, 379229, 379407, 455445, 455560, H04Q 700

Patent

active

057683085

ABSTRACT:
In a TDMA mobile-to-mobile connection, the end-to-end audio signal quality as well as system performance can be improved by providing digital signal processors the capability to automatically switch configuration such that each digital signal processor in a mobile-to-mobile communication connection can automatically identify a TDMA mobile-to-mobile connection and bypass the speech encoding and decoding processes within the digital signal processors. The two digital signal processors are virtually connected at the channel codecs.

REFERENCES:
patent: 5297147 (1994-03-01), Shimokasa
patent: 5499240 (1996-03-01), Gittins et al.
patent: 5563912 (1996-10-01), Yasunaga et al.
patent: 5608779 (1997-03-01), Lev et al.
Yasuda et al., "Network Functions for the Application of Multi-rate Speech Coding in Digital Cellular Systems", Proceedings of IEEE Vehicular Tech. Conf., vol. 1, pp. 306-310, (1994).
Uebayashi et al., "Development of TDMA Cellular Base Station Equipment", Vehicular Tech. Society 42nd Conf., vol. 1, pp. 566-569, (1992).

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