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Figure 12: (2× 2) MIMO baseband transmission system model with discrete zero forcing equaliser.
5 CONCLUSIONS
In this contribution a (2 × 2) optical MIMO commu-
nication system, consisting of a 1.4 km multi-mode
fibre and optical couplers attached to both ends, has
been analysed. The estimations of the MIMO spe-
cific impulse responses have been obtained for op-
erating wavelengths of 1576 nm and 1326 nm using
optimized signal deconvolution by applying the para-
metric regularisation filter. It has been shown that
the quality of the estimated impulse responses signifi-
cantly improvesand is comparable to Wiener filtering.
These estimated impulse responses have been used
for modelling a baseband MIMO data transmission
system. In order to receive the transmitted data unaf-
fected from the data send on the neighbouring channel
zero forcing equalisation has been investigated. The
successful implementation has been shown by the bit-
error curves as well as by the open eye-diagram.
ACKNOWLEDGEMENTS
This work has been funded by the German Ministry
of Education and Research (No. 03FH016PX3).
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