Blind MIMO MC-CDMA parameters estimation over fading channels for cognitive radio
Résumé
Wireless communication systems must answer drastic requirements, such as reliability, availability and interoperability in vehicular applications. Cognitive radio system is suitable technology able to answer these needs. It allows dynamic spectrum allocation and very often spectrum reuse especially in rural areas. In consequence, it require an accurate knowledge of the radio spectrum in which it operates while the vehicle is moving. Focusing on MIMO-MC-DS-CDMA systems, we present a blind technique that aims at recovering both spectral and temporal signal parameters. The proposed approach leads to a fast efficient parameters estimation, insensitive to receiver phase and frequency offsets, which is suitable for vehicular applications.