Delay-induced scattering with phase randomization and partitioned frequency hopping
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United States of America Patent
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Feb 26, 2008
Grant Date -
Apr 14, 2005
app pub date -
Oct 10, 2003
filing date -
Oct 10, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A first copy and a second copy of a signal, which comprises a plurality of TDMA frames, are transmitted from the same antenna. Relative to the first copy, the second copy of the signal has a fixed delay and a random phase. The random phase changes from one of the TDMA frames to another of the TDMA frames. A group of hopping carrier frequencies are partitioned into at least two sets of carrier frequencies. The first copy and the second copy of the signal are transmitted using a sequence of the hopping carrier frequencies, wherein consecutive pairs of the hopping carrier frequencies for consecutive pairs of the TDMA frames are not from the same one of the at least two sets.
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