A New OFDM Standard for High Rate Wireless LAN in the 5 GHz Band
An overview is given of the new OFDM based wireless LAN standard which is being developed by IEEE 802.11, ETSI and MMAC. Signal processing issues are described and some simulations are shown to demonstrate the achievable performance in multipath fading channels. This paper describes the modulation parameters of the new OFDM standard. An overview will be given of all signal processing tasks needed to transmit and receive packets according to the chosen OFDM modulation. Special attention will be given to the preamble, which is relatively short in order to minimize the loss in throughput. The latter is especially interesting since the new IEEE 802.11 OFDM standard is the first packet based OFDM standard.