A V-BLAST Detector Approach for W-CDMA Signals with Frequency Selective Fading

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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Silva, Mário Marques da (Institute for Telecommunications, Lisboa, Portugal)
Dinis, Rui (CAPS-IST, Lisboa, Portugal)
Correia, Américo M. C. (ADETTI, Lisboa, Portugal)

Due to the multipath propagation, the Wideband-Code Division Multiple Access (W-CDMA) channels are typically frequency-selective. For this reason, conventional Vertical - Bell Laboratories Layered Space-Time (V-BLAST) detection techniques are not suitable for W-CDMA-based MIMO systems (Multiple Input, Multiple Output). In this paper, we consider the use of MIMO schemes within W-CDMA systems and we propose a V-BLAST detector suitable for multipath, frequeny-selective channels where the individual detection of each path is performed using a simple decorrelator, and the resulting signals are combined through an MSE-based (Mean Square Error) multipath combining algorithm. Due to the high sensitiveness of this detector to interpath interference, a Multipath - Parallel Interference Cancellation (MPIC) is also considered, followed by either Successive Interference Cancellation (SIC) and Parallel Interference Cancellation (PIC).