Ainoa Navarro

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Cellular systems of the fourth generation (4G) have been optimized to provide high data rates and reliable coverage to mobile users. Cellular systems of the next generation will face more diverse application requirements: the demand for higher data rates exceeds 4G capabilities; battery-driven communication sensors need ultra-low power consumption; control(More)
Generalized frequency division multiplexing (GFDM) is a multi-carrier modulation scheme. In contrast to the traditional orthogonal frequency division multiplexing (OFDM), it can benefit from transmitting multiple symbols per sub-carrier. GFDM targets block based transmission which is enabled by circular pulse shaping of the individual sub-carriers. In this(More)
LTE and LTE-Advanced have been optimized to deliver high bandwidth pipes to wireless users. The transport mechanisms have been tailored to maximize single cell performance by enforcing strict synchronism and orthogonality within a single cell and within a single contiguous frequency band. Various emerging trends reveal major shortcomings of those design(More)
A Leak Detection and Isolation (LDI) algorithm with a State Observer is designed and tested in simulation to locate a water-leak on a pipeline. Most of the works presented in the literature make some linearization in the model limiting the performance of the approach. In order to avoid this situation, in this work, the State Estimation is designed with the(More)
In this work we present a solution for the transmission of H.263 bitstream over error prone channels. The significance of each H.263 syntactical element has been investigated. This allows designing Equal (EEP) and Unequal Error Protection (UEP) schemes. By using a joint source-channel coding scheme we achieved video PSNR improvements over 20 dB.
This paper provides intermediate transceiver and frame structure concepts and corresponding results for the European FP7 research project 5GNOW. The Unified Frame Structure concept is presented which supports an integrated 5G air interface, capable of dealing both with broadband data services and small packet services within the same band. Waveforms which(More)
This paper describes an 8-bit data interface circuit between the ISA bus and the digital signal microprocessor TMSC320C31 from Texas Instruments. It has firstly been part of an H.261 video encoder board and then used in other PC boards such as an ISDN, an H.261 video decoder and a QCIF video codec. The C31-ISA interface’s simplicity and functionality are(More)
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