TDMA - CDMA White Papers
Constrained Maximum-Likelihood Detection in CDMA
Overview 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 detector. This paper considers the constrained ML problem where the solution vector is restricted to lie within a closed convex set (CCS). Such a design criterion leads to detector structures, which are ML under the constraint assumption. A close relationship between a sphere-constrained ML detector and the well-known minimum mean square error detector is found and verified.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | January 2001 | Downloads | 2 |
| Format | White Papers | ||
| Topics | |||
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