A Robust Algorithm for OFDM Synchronization with Modified Polyphase Training Sequences
نویسنده
چکیده
Orthogonal Frequency Division Multiplexing (OFDM) systems are sensitive to timing and frequency estimation errors, which causes inter-symbol-interference (ISI) and intercarrier-interference (ICI), leading to degradation in the system performance. An algorithm is presented in this paper, based on modified polyphase sequences; proposed for timing and frequency synchronization of OFDM system which is robust, efficient and computationally less complex. The proposed algorithm gives 100% success of timing index acquisition at 10 dB SNR which is at least 5 dB less compared to all existing algorithms. The algorithm is also compatible with IEEE 802.16e wireless Metropolitan Area Network (MAN) standard. This approach is based on modification of polyphase sequences by taking FFT of it.
منابع مشابه
Synchronization for MIMO OFDM systems
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