Multistage reception of code division multiple access transmissions
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United States of America Patent
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Apr 24, 2007
Grant Date -
Mar 13, 2003
app pub date -
Mar 29, 2002
filing date -
Mar 30, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Reducing multiple access interference in the radio frequency communications path between the network base station and UE. The preferred methods include interleaving STAP and MUD in a plurality of stages in a base station receiver. Specific embodiments accomplish this by selecting certain UE connections for MUD processing by stage. Then, in two or more stages, demodulating the UE connections selected for MUD processing using STAP, and MUD canceling UE connections selected for MUD processing. Within the latency requirements of the network, preferred embodiments of the present invention also command a transmit power for each UE connections in order to exploit the effect of interleaved STAP and MUD processing.
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