Method and apparatus for transmitting messages in a wireless communication system
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United States of America Patent
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Oct 24, 2006
Issued Date -
N/A
app pub date -
Feb 10, 2001
filing date -
Feb 10, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Techniques to reduce transmit power required for transmission of messages from an access terminal to reduce interference to transmissions from other access terminals. In one aspect, messages to be transmitted are defined and/or coded such that they may be detected at different received signal qualities. The codewords may be defined having different distances to their nearest codewords. In another aspect, messages to be transmitted are assigned to different points in a signal constellation, with the points being located such that they may be received at different signal qualities. Codewords that may be received at a lower signal quality may be assigned to messages more likely to be transmitted at higher transmit power levels (e.g., when the access terminal is located further away) or to more frequently transmitted messages.
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