MRCS - Selecting Maximal Ratio Combined Signals: A Practical Hybrid Diversity Combining Scheme

Autor(es)

Calmon, Flavio du Pin ^[1] ; Yacoub, Michel Daoud ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Elect & Comp Engn, Dept Commun, Wireless Technol Lab WissTek, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS; v. 8, n. 7, p. 3425-3429, JUL 2009.
• Citações Web of Science: 8

Resumo

This paper presents and investigates a general diversity combining scheme, here named MRCS, in which maximal-ratio combined signals are chosen on a selection combining basis. This combining method has a simple implementation and a tractable analytical formulation that can be directly applied to situations in which site selection exists. A general analysis of the probability distribution (reliability), level crossing rate, and average fade duration at the output of the combiner is provided, along with examples for a Nakagami-m fading environment. The main result of the present work, however, is the derivation of an exact, easy-to-evaluate closed-form expression for the mean signal-to-noise ratio at the output of the combiner. Such an expression is applicable for conditions in which the product of the number of maximal-ratio combining branches and the Nakagami-m parameter is an integer and it generalizes a result presented elsewhere in the literature. The formulations derived here find a direct applicability in the dimensioning of practical wireless networks. (AU)

• Processo FAPESP: 07/02117-1 - Formulação analítica para o dimensionamento de redes sem fio multihop: análise de interferência e tráfego multi-serviço
• Beneficiário: Flávio du Pin Calmon
• Modalidade de apoio: Bolsas no Brasil - Mestrado