A realistic MIMO time-variant channel applied to diagonalizing precoders

Precoders permits to enhance the performance of MIMO systems by optimizing a pertinent criterion of the transmission. For example, the max-d min precoder optimizes the minimum Euclidean distance of the received constellation. In this paper, we evaluate the performance of max-d min in a realistic tim...

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Vydáno v:2009 9th International Conference on ITS Telecommunications s. 158 - 163
Hlavní autoři: Madi, G., Vrigneau, B., Pousset, Y., Vauzelle, R.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.10.2009
Témata:
3D raytracing
Bit error rate
Channel state information
Constellation diagram
estimation error
Euclidean distance
In-Vehicle
Jakes model
Laboratories
linear precoder max-dmin
Maximum likelihood decoding
MIMO
mobility
Random variables
realistic channel
Statistics
Transmitters
V2V and V2I Communications
ISBN:1424453461, 9781424453467
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Shrnutí:Precoders permits to enhance the performance of MIMO systems by optimizing a pertinent criterion of the transmission. For example, the max-d min precoder optimizes the minimum Euclidean distance of the received constellation. In this paper, we evaluate the performance of max-d min in a realistic time-variant channel for both spectral efficiency (4 and 8 bit/s/Hz). The channel is obtained by a 3D Propagation Simulation Software based on a raytracing method. Moreover, the speed effect is introduced by using the Jakes' model. We are able to obtain the temporal evolution of the channel and the statistics of key random variables. This permits us to study the max-d min precoder with a perfect channel state information and with a simple channel error estimation. The max-d min is also compared to the max-SNR precoder.
ISBN:1424453461
9781424453467
DOI:10.1109/ITST.2009.5399365