Constrained maximum-likelihood detection in CDMA.

Constrained maximum-likelihood detection in CDMA.

The detection strategy usually denoted optimal multiuser detection is equivalent to the solution of a (0, 1)-constrained maximum-likelihood (ML) problem, a problem which is known to be NP-hard. In contrast, the unconstrained ML problem can be solved quite easily and is known as the decorrelating det...

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Vydáno v:IEEE Transactions on communications 49, 1 (2001).
Hlavní autor: Peng Hui Tan
Médium: Článek
Jazyk:English
Témata:
CDMA.
NP-hard problem.
Bit-error rate performance.
Box-constraint.
Clipped soft decision.
Closed convex set.
Computer simulations.
Constrained maximum-likelihood detection.
Convergence.
Decorrelating detector.
Detection strategy.
Detector structures.
Iterative algorithm.
Linear variational inequality theory.
Minimum mean square error detector.
Optimal multiuser detection.
Parallel interference cancellation structures.
Signal-dependent weights.
Solution vector.
Sphere constraint.
Weighted linear parallel interference canceler.