Patrick Nickel

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—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)
— Cellular mobile radio systems like GSM/ EDGE (Enhanced Data Rates for GSM Evolution) using pulse amplitude modulation (PAM) for transmission over frequency-selective channels are confronted with increasing demands on spectral efficiency. By using advanced signal processing techniques, receivers are able to cope with higher interference power levels from(More)
Introduction • Responsive Jamming: Emerging technology for electronic warfare (EW) • Most jamming systems currently in operation are proactive – Jamming parameters (center frequency, bandwidth, waveform type, …) selected a-priori – Typically broadband jammers, continuously active – irrespective of spectrum activity ⇒ Relatively high energy consumption per(More)
In this paper, a joint (multiuser) turbo equalizer performing single antenna interference cancellation (SAIC) for complex–valued modulation schemes is proposed. In order to improve the performance of a reduced–complexity equalizer for intersymbol interference (ISI) channels in different interference situations (overloaded system), an appropriate(More)
We consider a joint detection approach for cancellation of co–channel interference in time–division multiple access (TDMA) mobile communications systems like GSM/EDGE (Enhanced Data Rates for GSM Evolution). Concepts from reduced–state equalization of frequency–selective multiple– input multiple–output (MIMO) channels are applied together with prefiltering.(More)
In cellular mobile radio systems, multiple access is causing interference that limits capacity of the networks. The GSM system with multiple users can be interpreted as MIMO system with a desired user and (cochan-nel and adjacent channel) interferers. Using a multiple– input multiple–output (MIMO) multiuser joint detection approach for desired signal and(More)
—In recent years, single antenna interference cancellation (SAIC) has evolved as an attractive method to increase the capacity of single carrier mobile radio networks like GSM/ EDGE (Enhanced Data Rates for GSM Evolution) [1], [2]. Different algorithms (e.g. [3], [4]) have been developed to improve the performance of the GSM system in severely interference(More)
— In this paper, single–carrier transmission impaired by cochannel interference is considered, which generally arises in a GSM/ EDGE mobile radio network. Here, cochannel interference is created due to the reuse of the frequencies in nearby cells. In the case, that only a single antenna is available at the mobile receiver, the (multiple–input single–output)(More)
For conventional orthogonal frequency-division multiplex-ing (OFDM) systems, the guard interval is disregarded in the receiver and rectangular shaped windows are used implicitly due to the discrete Fourier transform (DFT). We consider a Nyquist-shaped window in the receiver, so that the transmit signal does not need to be modified, and optimize the window(More)