Method and apparatus for optimizing tree pruning in a...

Details Method and apparatus for optimizing tree pruning in a... Method and apparatus for optimizing tree pruning in a...

2007-03-13

2007-03-13

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

Reexamination Certificate

active

10207490

ABSTRACT:
A multi-user decoder is disclosed in which interfering users are assigned to levels of a decoding tree constructed in the decoder dependent on the power levels of the user's received signals and for each symbol interval. By building the decoding tree in this manner for each symbol interval, a reduced complexity search is more likely to include paths and nodes in the tree containing the correct value for the channel symbols.

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Alexander et al. “Iterative Multiuser Interference Reductin: Turbo CDMA”, IEEE Transactions on Communications, vol. 47, No. 7, Jul. 1999.

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