ICI Reduction using Extended Kalman Filter in OFDM System
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Reduction of Intercarrier Interference in Ofdm Systems
Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for the broadband wireless communication system. However, a special problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that result in Intercarrier Interference (ICI). ICI causes power leakage among subcarriers thus degrading the system performance. This paper will ...
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Orthogonal frequency division multiplexing (OFDM) is used in many wireless broadband communication systems because it is a simple and scalable solution to inter symbol interference caused by a multipath channel. OFDM is emerging as preferred modulation scheme in modern high data rate wireless communication systems. A well known problem of OFDM system is sensitivity to frequency offset between t...
متن کاملICI Reduction using Extended Kalman Filter in OFDM System
Orthogonal frequency division multiplexing (OFDM) is emerging as preferred modulation scheme in modern high data rate wireless communication systems. A well known problem of OFDM system is sensitivity to frequency offset between the transmitted and received signals, which may be caused by Doppler shift in the channel or by the difference between the transmitter and receiver local oscillator fre...
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The performance of an OFDM system can be strongly degraded by the presence of random phase noise especially if a system design targets high data rates at high carrier frequencies. Phase noise causes constellation rotation, the so called common phase error (CPE), and intercarrier interference (ICI). In this paper we introduce an algorithm for pilot based CPE estimation using an extended Kalman f...
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Orthogonal Frequency Division Multiplexing (OFDM) has recently been used widely in wireless communication systems. OFDM is very effective in combating inter-symbol interference and can achieve high data rate in frequency selective channel. For OFDM communication systems, the frequency offsets in mobile radio channels distort the orthogonality between subcarriers resulting in Inter Carrier Inter...
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