Interference Suppression Consisting of Pre-distortion Filtering and Selective Transmit Diversity |
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| Authors: | Mário Marques da Silva Américo M C Correia Rui Dinis |
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| Affiliation: | 1. Instituto de Telecomunica??es, IST, Torre Norte 9.26, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
2. ADETTI, IST, Torre Norte 9.26, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
3. Instituto de Sistemas e Robótica, IST, Torre Norte 9.26, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
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| Abstract: | In this paper we present and evaluate a pre-distortion (PD) scheme for the downlink of Wideband-code division multiple access
(W-CDMA) systems considering a Rake in the receiver in order to exploit multipath diversity. Its performance is compared with
schemes without the PD at the base station (BS), and combined with a transmit diversity (TD) scheme to improve the performance
by exploiting spatial diversity. It is shown that the proposed PD scheme allows receivers (Mobile Stations) with very low
complexity, contrarily to the case where a post-processing multi-user detector (MUD) approach is adopted to improve the performance.
Therefore, the proposed PD scheme can be seen as an alternative to post-processing schemes.
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| Keywords: | W-CDMA Pre-processing Selective transmit diversity Frequency-selective channels Downlink transmission |
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