Performance of low-complexity RAKE reception in a realistic UWB channel
Cassioli, D.; Win, M.Z.; Vatalaro, F.; Molisch, A.F.
Communications, 2002. ICC 2002. IEEE International Conference on
Volume 2, Issue , 2002 Page(s): 763 - 767 vol.2
Digital Object Identifier   10.1109/ICC.2002.996958
Summary: We evaluate the link performance of an ultra-wide band (UWB) system using reduced-complexity RAKE receivers, which are based on either partial combining (called PRAKE) or selective combining (called SRAKE). The first is suboptimum and combines the first arriving multipath components, while the second combines the strongest multipath components. We use a statistical tapped-delay-line channel model that is based on extensive measurement campaigns, and reflects both small-scale and large-scale variations of the channel. Through semi-analytical evaluations of the bit error probability, we show that the simpler PRAKE receiver is almost as good as the SRAKE even for a small number of fingers. We show how this behavior can be related to the channel characteristics.

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