Use of orthogonal or near orthogonal codes in reverse link
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United States of America Patent
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Sep 4, 2012
Grant Date -
Aug 27, 2009
app pub date -
Apr 30, 2009
filing date -
Jul 17, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for use with a shared access communication channel is disclosed. The chipping rate of a first group of terminals is determined. Transmissions on the shared access communication channel are encoded using first pseudorandom noise (PN) code and a phase shift at the first chipping rate and an orthogonal spreading code having a chipping rate less than the first chipping rate. The apparatus may receive a feedback channel assignment and may receive an indication of a change in timing on the assigned feedback channel.
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