One-bit Time Reversal for WLAN Applications

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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Kyritsi, Persefoni; Papanicolaou, George (Department of Mathematics, Stanford University, Stanford, CA 94305-2125, USA)

Time reversal (TR) is a technique that can achieve remarkable temporal focusing (delay spread reduction) and spatial focusing (low spatial interference) in the context of wideband multiple/single input-single output systems. In this paper, we investigate a simplified form of time-reversal, referred to as one-bit time reversal. The efficiency of this technique has already been demonstrated for ultrasound applications. We apply it to radio waves and demonstrate that it can preserve the spatial focusing properties of TR, while requiring much simpler transmit filters. However, it does not have as good temporal focusing properties as pure TR.