Frank Obernosterer

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In this paper, we develop receiver concepts for transmission with space–time block codes (STBCs) over frequency-selective fading channels. The focus lies on Alamouti’s space–time block-coding scheme, but the results may be generalized to other STBCs as well. We show that a straightforward combination of conventional equalizers and a space–time block decoder(More)
For the uplink of the E–UTRA Long Term Evolution (LTE) system, single–carrier frequency–division multiple access (SC–FDMA) transmission has been selected. Frequency–domain linear and decision–feedback equalizers have been already given in the literature for an SC–FDMA transmission over a multiple– input multiple–output (MIMO) intersymbol interference (ISI)(More)
Currently, Multiple Users Reusing One Slot (MUROS) is discussed in 3GPP GERAN as an extension of the GSM standard. In MUROS, two overlaid GMSK signals are transmitted in the same time slot and at the same frequency resource. By this, capacity of existing GSM networks in principle can be doubled and up to four half rate voice users can share one time slot.(More)
Voice services over Adaptive Multi-user channels on One Slot (VAMOS) has been standardized as an extension to the Global System for Mobile Communications (GSM). The aim of VAMOS is to increase the capacity of GSM, while maintaining backward compatibility with the legacy system. To this end, the Orthogonal Sub-channels (OSC) concept is employed, where two(More)
In advanced TDMA mobile communications systems, reduced{state equalization algorithms have to be employed because high{level modulation is used in order to improve spectral eÆciency. Such equalizers have only high performance, if the overall discrete{time system to be equalized is minimum{phase. Therefore, in general, a discrete{time pre lter has to be(More)
In this paper, we develop receiver concepts for transmission with space–time block codes (STBC’s) over frequency–selective fading channels. The focus lies on Alamouti’s STBC, but the results may be generalized to related STBC’s. We show that a straightforward combination of conventional equalizers and a space–time block decoder is only possible if at least(More)
In this paper, we develop receiver concepts for transmission with space time block codes (STBC's) over frequency selective fading channels. The focus lies on Alamouti's space time block coding scheme, but the results may be generalized to other STBC's. We show that a straightforward combination of conventional equalizers and a space time block decoder is(More)