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A post-detection maximum ratio combiner. Experimental assessment on high diversity underwater channels
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Abstract(s)
Maximum Ratio Combiner (MRC) is a diversity
combining technique applicable to underwater
communications when the data transmitted by a single
projector is received by more than one antenna/node.
Post Detection MRC (PD-MRC) performs a weightedsum
over initial detected outputs of multiple nodes. PDMRC
can be applied to noise-only or ISI-only channels
with the weights computed from the signal to noise ratio
or from the channel impulse response of each node,
respectively. In this paper it is shown that in the presence
of noisy-ISI channels the weighs can be computed from
the detector output constellation of each node. A
performance of the PD-MRC is evaluated using real data
collected during RADAR’07 experiment. Results show
that a gain is always attained using two nodes in the PDMRC
as compared to the node having the best MSE.
Moreover, the PD-MRC gain is higher when both nodes
present a similar MSE.
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Citation
A. SILVA and S.M. JESUS, ''A post-detection maximum ratio combiner: experimental assessment on high diversity underwater channels'' in Proc. 7th Int. Workshop on Systems, Signal Processing and their Applications (WoSSPA), 2011, Tipaza (Algeria), pp. 335-338, May, (doi:10.1109/WOSSPA.2011.5931505)