Ngajikin, Norhafizah and Syed Yusof, Sharifah Kamilah (2008) The PAPR performance in WLAN-OFDM system. In: OFDM and MIMO-OFDM System. Penerbit UTM, Johor, pp. 1-8. ISBN 978-983-52-0660-3
Official URL: http://www.penerbit.utm.my/bookchapterdoc/FKE/book...
OFDM is a communication technique that divides a communication channel into a number of equally spaced frequency hands. This modulation scheme is derived from multi-carrier modulation (MCM). A subcarrier that carries a portion of the user information is transmitted in each frequency sub-band. In OFDM, every subcarrier is orthogonal to each other subcarrier. Due to the summation of signals from each subcarrier in OFDM signal, Peak To Average Power Ratio (PAPR) problem arises. Figure 1.1 illustrates the flow of signal in the OFDM transmitter. ScN multiple subcarriers are added coherently and might contribute a peak in signal envelope that can achieve several dB above the average signal power.
|Item Type:||Book Section|
|Uncontrolled Keywords:||peak to average power ratio (PAPR), WLAN system|
|Subjects:||T Technology > T Technology (General)|
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Deposited By:||Fazli Masari|
|Deposited On:||17 Aug 2012 04:00|
|Last Modified:||17 Aug 2012 04:00|
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