Abstract
In this contribution 1 we address the issue of pilot design for channel estimation in multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems applying beamforming at the transmitter. Specifically we consider the case when a finite set of fixed beamforming vectors is available and the selection of the optimal weight for each transmit antenna is performed exploiting long-term channel information.
Capacity maximization is considered as the optimization parameter in order to achieve a proper trade-off between estimation performances and available resources for data transmission. Our analysis shows the impact of different values of pilot boost and pilot overhead on the channel estimation mean square error (MSE) and on the capacity of the system. Simulation results are given for an outdoor mobile wireless channel, different number of antennas and channel estimator filter order for a single and a multi-user transmission scenario.
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Carta, M., Cosovic, I., Auer, G. (2007). Pilot Design for MIMO-OFDM with Beamforming. In: Plass, S., Dammann, A., Kaiser, S., Fazel, K. (eds) Multi-Carrier Spread Spectrum 2007. Lecture Notes Electrical Engineering, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6129-5_38
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DOI: https://doi.org/10.1007/978-1-4020-6129-5_38
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