Alexander Onic

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— Unique word OFDM is a novel technique for constructing OFDM symbols, that has many advantages over cyclic prefix OFDM. In this paper we investigate two different approaches for the generation of an OFDM symbol containing a unique word in its time domain representation. The two-step and the direct approach seem very similar at first sight, but actually(More)
—Unique word – orthogonal frequency division mul-tiplexing (UW-OFDM) is a novel OFDM signaling concept, where the guard interval is built of a deterministic sequence – the so-called unique word – instead of the conventional random cyclic prefix. In contrast to previous attempts with deterministic sequences in the guard interval the addressed UW-OFDM(More)
—Unique word orthogonal frequency division multi-plexing (UW-OFDM) inherently introduces a complex number Reed Solomon (RS) code. Originally, the code generator matrix of systematic coded UW-OFDM had been designed rather intuitively by minimizing the mean redundant energy. In this work we justify this approach by applying a cost function that incorporates(More)
UW-OFDM (unique word – orthogonal frequency division multi-plexing) is a novel OFDM signaling concept, where the guard interval is built of a deterministic sequence – the so-called unique word – instead of the conventional random cyclic prefix. In contrast to previous attempts with deterministic sequences in the guard interval , the addressed UW-OFDM(More)
—Unique Word (UW) OFDM is an attractive alternative to conventional cyclic-prefix OFDM as it offers the potential to apply more sophisticated detection schemes, resulting in improved performance both in uncoded as well as coded transmission. In this paper, we study soft-output detection schemes suited for coded UW-OFDM transmission. In particular, we(More)