WiMAX & Qualcomm: OFDM Technologies for BWA Message Board

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Technology Stocks : WiMAX & Qualcomm: OFDM Technologies for BWA

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To: P2V who wrote (39)	8/26/2005 4:18:59 PM
From: P2V	of 86

The author points out the the peak-to-average power ratio (PAPR)problem, regarding Power Amplifiers, and the possibility that some kind of pre-distortion will be needed to control input power requirements (from battery or equivalent power supplies) Both the 802.11 (Wi-Fi) and 802.16 (Wi-Max) standards specify a "Pre-Whitening scheme", which answers this problem. This "Pre-whitening scheme" is one factor in the W-OFDM (Wideband OFDM) patent , owned by Wi-Lan. This patent is currently being disputed, in a Canadian Court, by Cisco. OFT

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