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CORRAL BRIONES graciela
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Título:
Performance of joint reduced-state multiuser detection and group decoding
Autor/es:
GRACIELA CORRAL BRIONES; MARIO R. HUEDA; CARMEN E. RODRIGUEZ
Lugar:
Digital Commun. Res. Lab., Univ. Nacional de Cordoba, Argentina
Reunión:
Conferencia; GLOBECOM '04. IEEE Global Telecommunications Conference, 2004.; 2004
Resumen:
Joint reduced-state detection and group decoding (RSD-GD) is a
promising approach to increase the spectral efficiency of
multiple-access systems. Performance of RSD-GD receivers improves as
coding information of more users is taken into account in the detection
algorithm. For asynchronous channels, however, there is another
approach to improve performance: use of more states of the
multiple-access channel (MAC). Performance of RSD-GD receivers for
asynchronous channels has been investigated using computer simulations;
however, analytical studies of the performance of RSD-GD have not been
reported so far. In this paper we derive upper bounds for the
performance of RSD-GD over asynchronous MAC. The new results are based
on an improved upper bound on the error event probability, which is
significantly tighter than the traditional bound based on pairwise
error events. Comparisons with values obtained from computer
simulations show the excellent accuracy of the proposed bound.