Abstract
This paper presents the error probability performance for M-ary quadrature amplitude modulation (mqam) signalling with L-branch diversity receiver over Nakagami fading channel. Both maximal ratio combining (mrc) and selection diversity combining (sdc) techniques are considered with reference to predetection diversity architecture, in the case of integer values of fading severity and independent fading. Average symbol error probability is analitycally derived in terms of finite sum of Gauss hypergeometric functions for balanced branches with identical values of the fading severity. In particular, performance analysis of sdc for mqam in Nakagami fading is new since it has not been presented in any previous work. Numerical results are presented allowing to identify those operational conditions in which diversity techniques can aid successfully in counteracting the effects of slow and nonselective short-term fading.
Résumé
Ľarticle étudie la probabilité ďerreur du maq m-aire qui est obtenue avec une diversité à l branches. Il analyse les combinaisons de signaux à rapport maximal (mrc) et à sélection (sdc) avant détection, pour des valeurs entières de la sévérité ďévanouissement et des évanouissements indépendants. La probabilité ďerreur majeure par symbole est exprimée analytiquement par une somme finie de fonctions hypergéométriques gaussiennes pour des branches équilibrées ayant des valeurs identiques de sévérité ďévanouissement. Ľanalyse est originale dans le cas sdc. Des résultats numériques permettent ďidentifier dans quelles conditions opérationnelles les techniques de diversité sont efficaces contre les effets ďévanouissements lents non sélectifs.
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Fedele, G. MQAM Performance over Nakagami channels with diversity. Ann. Télécommun. 56, 78–84 (2001). https://doi.org/10.1007/BF03002988
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DOI: https://doi.org/10.1007/BF03002988