On Combined Beamforming and OSTBC over the Cognitive Radio S-Channel with Partial CSI
| Autor: | Lars K. Rasmussen, Mikael Skoglund, Efthymios Stathakis |
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| Přispěvatelé: | Stathakis, E, Skoglund, Mikael, Rasmussen, Lars, 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications Stockholm, Sweden 18-20 June 2012 |
| Rok vydání: | 2012 |
| Předmět: |
Beamforming
Engineering partial channel state information business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Transmitter Systems space-time codes Data_CODINGANDINFORMATIONTHEORY Interference (wave propagation) beamforming Telekommunikation Cognitive radio cognitive interference channel Transmission (telecommunications) Telecommunications Electronic engineering Bit error rate Transceiver business Time Block-Codes Communication channel |
| Zdroj: | CrownCom |
| DOI: | 10.4108/icst.crowncom.2012.248344 |
| Popis: | A pair of secondary (cognitive, unlicensed) users is communicating in the presence of multiple primary (licensed) user pairs. The cognitive transceiver is implementing beamforming and orthogonal space-time block coding in the presence of external interference, induced by the primary system transmission, that has to be properly handled. Moreover, the cognitive link nodes, both the transmitter and the receiver, are supplied with different levels of network side information (NSI), i.e. primary messages and partial channel side information (CSI). We investigate how this side information can be taken into account in the cognitive system design and how interference affects the behaviour of the beamforming solution. Through numerical simulations, we illustrate the impact of partial CSI on system performance and discuss its implications on the feasibility of cognitive systems. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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