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)
  • U. Y. Anelea, O. M. Arigbedea, +7 authors O. B. Akinolad
  • 2009
A study was carried out to estimate the nutritive value of four indigenous multi-purpose tree (MPT) species (Enterolobium cyclocarpum, Treculia africana, Gliricidia sepium andMillettia griffoniana) by the evaluation of their seasonal chemical composition, in vitro fermentation and in sacco dry matter (DM) degradation. The main objective of the study was to(More)
Unique word-orthogonal frequency division multiplexing (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 signaling(More)
Unique word orthogonal frequency division multiplexing (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 the(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 present(More)
UW-OFDM (unique word – orthogonal frequency division multiplexing) 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)
A major drawback of frequency modulated continuous-wave (FMCW) radar systems is the permanent leakage from the transmit into the receive path. Besides leakage within the radar device itself, signal reflections from a fixed object in front of the antennas additionally introduce so-called short-range (SR) leakage. It causes a strong degradation of detection(More)