Amir Tadayon - Projects
Acoustic multicarrier ICI-mitigating receiver
In mobile acoustic systems, Doppler effect can be severe enough that the received OFDM signal experiences non-negligible frequency offsets even after initial resampling. In situations with high mobility, however, OFDM systems are challenged by thetime-variability of the channel, as the relative motion between transmitter and receiver creates carrier-dependent Doppler shifts, thus introducing inter-carrier interference (ICI) which has a detrimental impact on data detection performance. Reliable coherent data detection requires the channel state information at the receiver. Pilot-assisted channel estimation based on physical propagation model is used to obtain the necessary channel state information for reliable coherent communications. When multiple receive elements are available, correlation between the elements, if exists, can be exploited to reduce the signal processing complexity without compromising the performance.
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