Tag: Ofdm

Free Download OFDM for Wireless Communications Systems By Ramjee Prasad
2004 | 294 Pages | ISBN: 1580537960 | PDF | 5 MB
OFDM (Orthogonal Frequency Division Multiplexing) is a key technology which allows for robust, high capacity, high speed wireless broadband multimedia networks. Written by leading authority and best-selling author Ramjee Prasad, this timely new work offers today’s wireless professionals a complete understanding of OFDM technology and applications in wireless communications systems, placing emphasis on wireless LANs (local area networks) and PANs (personal area networks). The book offers an in-depth treatment of the underlying technologies and applications of PANs and describes and evaluates a practical OFDM system concept. Invaluable for wireless engineers and researchers, this cutting edge new book is a must-have for anyone who needs to understand this critical technology and its implementation in today’s wireless systems.

Free Download Wireless OFDM Systems: How to make them work? by Marc Engels
English | PDF | 2002 | 218 Pages | ISBN : 1402071167 | 9.6 MB
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.