Method for reverse channel sounding in a communications system

Details Method for reverse channel sounding in a communications system Method for reverse channel sounding in a communications system

1996-02-15

2000-02-29

Ton, Dang

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370347, H04J 1300

Patent

active

060318317

ABSTRACT:
A method is disclosed for determining current channel state information in a communications system having a first communications unit communicating to a second communications unit, wherein the first communications unit sends a channel sounding packet (32) to the second communications unit. The channel sounding packet (32) is sent a time period, t, prior to the transmission of a signal by the second communications unit to the first communications unit. The second communications unit receives the channel sounding packet (46) and processes the channel sounding packet to determine at least one channel characteristic. In response to receiving the channel sounding packet (46) the second communications unit appends frame code information (48) to the signal to be transmitted from the second communications unit to the first communications unit, to inform the first communications unit of the communications parameters that have been optimized.

REFERENCES:
patent: 4969146 (1990-11-01), Twitty et al.
patent: 5301167 (1994-04-01), Proakis et al.
patent: 5351134 (1994-09-01), Yaguchi et al.
patent: 5570366 (1996-10-01), Baker et al.

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