Wireless OFDM Systems How to make them work? /

• Συγγραφή απο Οργανισμό/Αρχή: SpringerLink (Online service)
• Άλλοι συγγραφείς: Engels, Marc (Επιμελητής έκδοσης)
• Μορφή: Ηλεκτρονική πηγή Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Boston, MA : Springer US, 2002.
• Σειρά: The International Series in Engineering and Computer Science, 692
• Θέματα: Engineering.; Electrical engineering.; Electronics.; Microelectronics.; Electronic circuits.; Communications Engineering, Networks.; Circuits and Systems.; Signal, Image and Speech Processing.; Electronics and Microelectronics, Instrumentation.; Electrical Engineering.

 Wireless Local Area Networks (WLANs) experience a growing popularity recently. Where WLANs were primarily used for niche applications in the past, they are now deployed as wireless extensions to computer networks. The increase of the datarates from 2 Mbps up to 11 Mbps for roughly a constant price has played a major role in this breakthrough. As a consequence, an even greater success can be envisioned for the more recent OFDM-based WLAN standards in the 5 GHz band, which offer up to 54 Mbps. At IMEC we have realised this potential already several years ago and have established a successful research programme on OF- based WLAN. In 1995, we started our research on wireless OFDM in the frame of a - operation project with SAIT, a Belgian telecom company. The goal of the project was to establish a robust network for industrial environments. This resulted in a first OFDM chip, supporting QPSK, for wireless networking at the end of the project (1999). 1999 was also the start of an intense co-operation with National Semiconductor Inc., which resulted in a second generation ASIC in 2000. This OFDM processor supports up to QAM-64 and has a more optimal channel estimation algorithm. 

 Understanding the indoor environment -- The OFDM Principle -- When people agree on OFDM -- Beating the wireless channel -- Avoiding a tower of Babel -- Living with a real radio -- Putting it all together.