Multiplex communications – Duplex – Communication over free space
Patent
1994-11-28
1998-01-06
Chin, Wellington
Multiplex communications
Duplex
Communication over free space
379 59, 375219, 375225, 375240, H04L 514
Patent
active
057062820
ABSTRACT:
A digital cellular communication system provides an asymmetric speech coder for improving audio quality in the uplink channel. A high rate speech coder is provided in the uplink of the digital cellular communication system to improve the audio quality. To compensate for the higher band width consumed by this high rate speech coder, the uplink uses a channel code, such as a convolutional code, that generates fewer symbols per each input bit, thereby consuming less bandwidth. The loss of coding gain as a result of the change in the convolutional code is compensated for by applying a special power control strategy. The power control strategy increases the transmit power for transceivers using the asymmetric speech coder.
REFERENCES:
patent: 4352182 (1982-09-01), Billi et al.
patent: 5253269 (1993-10-01), Gerson et al.
patent: 5289501 (1994-02-01), Seshadri et al.
patent: 5327520 (1994-07-01), Chen
patent: 5353374 (1994-10-01), Wilson et al.
patent: 5353376 (1994-10-01), Oh et al.
patent: 5517492 (1996-05-01), Spear
patent: 5557639 (1996-09-01), Heikkila et al.
Chin Wellington
Corrielus Jean B.
Lucent Technologies - Inc.
LandOfFree
Asymmetric speech coding for a digital cellular communications s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Asymmetric speech coding for a digital cellular communications s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asymmetric speech coding for a digital cellular communications s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2335718