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oai:recercat.cat:2117/883762026-01-30T07:11:23Zcom_2072_1033col_2072_452950

MMSE Joint Detection in frequency-selective wireless communication channels for DS-CDMA systems Pérez Palomar, Daniel Rodríguez Fonollosa, Javier Lagunas Hernandez, Miguel A. Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal Àrees temàtiques de la UPC::Enginyeria de la telecomunicació Monte Carlo method Monte Carlo methods Code division multiple access Digital radio Filtering theory Montecarlo, Mètode de In digital mobile communication systems, two important problems arise, namely multiple access interference (MAI) and intersymbol interference (ISI). An attractive solution is the use of code division multiple access (CDMA) systems possibly combined with TDMA and FDMA. In CDMA communication systems, the MAI and ISI can be efficiently combated by applying multi-sensor linear joint detection (JD) techniques, in particular, space-time processing methods. In most cases, they are derived from a symbol-level error criterion. However, in some other cases they are obtained from a chip-level viewpoint, also known as chip sequence restoration techniques. In the present paper, a detailed analytical comparison between chip-rate and symbol-rate minimum mean square error (MMSE) block filtering is provided, taking into account also other features such as structured vs. non-structured block filter computation and chip-level vs. symbol-level training sequence. Monte-Carlo simulation results are also given to provide realistic comparisons of the different methods. Peer Reviewed Postprint (published version) 2000 Conference report Pérez, D., R. Fonollosa, Javier, Lagunas, M. MMSE Joint Detection in frequency-selective wireless communication channels for DS-CDMA systems. A: IEEE International Symposium on Spread Spectrum Techniques & Applications. "2000 IEEE Sixth International Symposium on spread spectrum techniques and applications: 6-8 September 2000, Parsippany, NJ, USA: procceedings: communications for a new millenium". Parsippany, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2000, p. 530-534. 0-7803-6560-7 https://hdl.handle.net/2117/88376 10.1109/ISSSTA.2000.876490 eng http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=876490 Open Access 5 p. application/pdf Institute of Electrical and Electronics Engineers (IEEE)