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An efficient frequency offset estimation and compensation method is proposed for LTE uplink system. In the proposed method, the current instantaneous frequency offset estimation combines with the last frequency offset estimation to get the current frequency offset estimation by Altering. According to the frequency offset estimation, data is compensated in inter-symbols and intra-symbols. The simulation...
An Ultra-Wideband (UWB) channel exhibits frequency dependent delay characteristics in different bands of transmission. In [6] we studied and quantified the differences of delay parameters over frequency bands 3.1-4.6 GHz in several UWB channel models (CM). Based on this observation, we proposed an adaptive timing synchronization scheme (ATS) which estimates and maintains the timing delays of each...
This paper is concerned with a simple in-phase and quadrature-phase (IQ) imbalance compensation scheme using a single pilot symbol in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme can estimate the IQ imbalance factors with pilot subcarriers of an OFDM symbol while existing method requires more OFDM symbols. Also, the proposed method is computationally efficient and...
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