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Evaluation of Vector-RAKE Receivers Using Different Antenna Array Configurations and Combining Schemes

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Abstract

Three potential vector RAKE (V-RAKE) receiverswith different complexity levels are compared. Thecomparison is conducted by using either single polarizedor dual polarized antenna arrays. An approach where either maximal ratio combining (MRC) orconventional beamforming (BF) is applied at each delay(RAKE finger) is considered. A simpler scheme where onlyone common beam pattern is synthesized for all RAKE fingers is also investigated. In this study itis proven that an array with four dual polarizedelements is very attractive for urban environmentscompared to an array with eight single polarizedelements. It is furthermore found that there is amarginal difference in the overall performance fromusing a V-RAKE receiver with MRC or conventional BF intypical urban environments. However, a loss of up to 2.0 dB is observed for the scheme with one commonbeam pattern for all RAKE fingers.

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Authors
  1. Klaus I. Pedersen
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  2. Preben E. Mogensen
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Pedersen, K.I., Mogensen, P.E. Evaluation of Vector-RAKE Receivers Using Different Antenna Array Configurations and Combining Schemes. International Journal of Wireless Information Networks 6, 181–195 (1999). https://doi.org/10.1023/A:1018804021893

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