Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/8296
Título: | Coded PPM based modulations for infrared WLAN'S |
Autor: | Alves, R. Gameiro, A. |
Palavras-chave: | Infrared PPM TCM coding Rate adaptation |
Data: | 2006 |
Editora: | ACTA Press |
Resumo: | In this communication we consider the use of PPM based modulation methods, such as the hybrid modulation method called Amplitude and Pulse-Position Modulation (APPM) and Overlapping Pulse-Position Modulation (OPPM) to improve the performance of infrared WLAN’s, by the use of Trellis-Coded Modulation (TCM) codes. We derive the best codes for some APPM and OPPM schemes, and the results show that non-negligible coding gains without bandwidth expansion can be obtained with trellis codes of moderate complexity. The theoretical coding gains are confirmed by simulation. Finally a set of multirate systems using the derived TCM coding are evaluated, and their practical benefits observed in terms of connectivity improvements. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/8296 |
ISBN: | 0-88986-545-0 0-88986-547-7 (CD) |
ISSN: | 1482-7905 1922-8082 (CD) |
Versão do Editor: | http://www.scopus.com/inward/record.url?eid=2-s2.0-33847212522&partnerID=40&md5=df9fe6a8a997ad41e8945ac52a592e82 http://www.actapress.com |
Aparece nas coleções: | DETI - Comunicações |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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ACSTD2006.pdf | 1.12 MB | Adobe PDF |
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