Abstract
In this paper we consider a coded transmission over a time-invariant MIMO channel, where channel state information is present at the receiver but not at the transmitter. As basic modulation technique we apply OFDM. In addition to MC-CDM spreading techniques, we introduce a new class of spreading matrices that works both in antenna and frequency direction, referred to as Multi-Carrier Cyclic Antenna Frequency Spreading (MC-CAFS). In the case of OFDM crosstalk only occurs because of the use of multiple transmit antennas, whereas systems with spreading are additionally affected by interference among subcarriers. Therefore, we utilize advanced joint detection techniques with moderate computational complexity like iterative detection, demapping, and decoding to mitigate the interference in both cases.
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Yacoub, D.Y., Dangl, M.A., Marxmeier, U., Teich, W.G., Lindner, J. (2004). Comparison of Iterative Detection Schemes for MIMO Systems with Spreading based on OFDM. In: Fazel, K., Kaiser, S. (eds) Multi-Carrier Spread-Spectrum. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0502-8_12
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DOI: https://doi.org/10.1007/978-94-017-0502-8_12
Publisher Name: Springer, Dordrecht
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