Multicarrier system using subchannel characteristics to implement different error rates within a data stream
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Aug 2, 1996
filing date -
Aug 2, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multicarrier transmission system (100) supports different desired error rates within a data symbol stream by manipulating subcarrier transmission characteristics for multiple subcarriers. A data symbol stream obtained for transmission is segmented into multiple substreams, and assigned to subcarriers based on error protection requirements (310, 320, 330). The transmission characteristics of the subcarriers are manipulated, according to a selected transmission configuration, to effect the combined error protection requirements (350, 360). Preferably, the subcarriers are modulated by allocating available power based on the relative error protection required for the substreams (360).
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