Robust OFDM Timing Synchronisation in Multipath Channels
نویسندگان
چکیده
منابع مشابه
Robust OFDM Timing Synchronisation in Multipath Channels
This paper addresses pre-FFT synchronisation for orthogonal frequency division multiplex (OFDM) under varying multipath conditions. To ensure the most efficient data transmission possible, there should be no constraints on how much of the cyclic prefix (CP) is occupied by intersymbol interference (ISI). Here a solution for timing synchronisation is proposed, that is, robust even when the strong...
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Wireless OFDM signals typically have a cyclicprefixed guard interval. The FFT timing synchronisation at the receiver is traditionally based on the peak point of the correlation output between the guard interval and its corresponding duplicate at the OFDM symbol’s tail. This approach does not in general find the optimum timing position for the FFT when the channel contains more than one path. Th...
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In this paper the novel method of “weighted OFDM” is addressed. Different types of weighting factors (including Rectangular, Bartlett, Gaussian, Raised cosine, Half-sin and Shanon) are considered. The impact of weighting of OFDM on the peak-to-average power ratio (PAPR) is investigated by means of simulation and is compared for the above mentioned weighting factors. Results show that by weighti...
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ژورنال
عنوان ژورنال: EURASIP Journal on Wireless Communications and Networking
سال: 2008
ISSN: 1687-1499
DOI: 10.1155/2008/675048