Tytuł:

Theoretical Investigation of Different Diversity Combining Techniques in Cognitive Radio, Journal of Telecommunications and Information Technology, 2018, nr 3

Autor:

Katiyar, Himanshu ; Agarwal, Rupali ; Srivastava, Neelam

Temat i słowa kluczowe:

cognitive radio ; probability of false alarm ; post examining selection ; complementary ROC ; switch and examine combining ; probability of detection

Opis:

In this paper, the performance of an energy detector in cognitive radio, using different diversity combining techniques, is evaluated. Among many diversity combining techniques, maximal ratio combining (MRC) gives the best results but at the cost of the highest complexity. To design a simpler receiver, it is suggested to use less complex combining techniques, i.e. switched diversity, which provides one of the least complex solutions to combat fading. The paper analyzes two switched diversity schemes, switch examine combining (SEC), and switch examine combining with post examining selection (SECp). A closed form expression determining the probability of detection using MRC, SEC and SECp is derived for various numbers of branches. Detection performance with different diversity combining techniques is compared and the complexity trade-off is observed.

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Data wydania:

2018, nr 3

Typ zasobu:

artykuł

Format:

application/pdf

Identyfikator zasobu:

ISSN 1509-4553, on-line: ISSN 1899-8852

Źródło:

Journal of Telecommunications and Information Technology

Język:

ang

Prawa:

Biblioteka Naukowa Instytutu Łączności