Voting system for improving the performance of single-user...

Details Voting system for improving the performance of single-user... Voting system for improving the performance of single-user...

2005-01-04

2005-01-04

Bayard, Emmanuel (Department: 2664)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

Reexamination Certificate

active

06839390

ABSTRACT:
A system is presented that provides real-time performance for iterative multi-user detectors, such as Turbo MUDs, which are used to separate simultaneous transmissions on the same frequency, by permitting the MUD to use a less computationally intense, fast-processing algorithm and to correct for errors caused by the fast processing. In order to reduce the errors, a voting system is coupled to the output of the multi-user detector within the iterative system. The voting system provides confidence values on a bit-by-bit basis for the estimates made by the multi-user detector, with the confidence values then being utilized as soft inputs to a bank of conventional single-user decoders.

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Xiaodong Wang and H. Vincent Poor, “Iterative (Turbo) Soft Interference Cancellation and Decoding for Coded CDMA,” IEEE Transactions on Communications, vol. 47, No. 7 Jul. 1999.
S, Verdu, Multi-User Detection, Cambridge University Press, 1998.

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