A DVB-H receiver architecture
ABSTRACT This paper proposes an integrated DVB-H receiver architecture. The main focus has been low power consumption, aiming at handheld battery operated devices. The total power consumption for the RF tuner is estimated to be less than 20 mW with a duty cycle of 10%. The receiver uses a low-IF architecture and cover the receive bands from 470 MHz to 702 MHz, with an IF of 4.57 MHz. The proposed receiver meets the DVB-H requirements. The sensitivity is -88 dBm, the noise figure 5.7 dB and the adjacent channel protection ratio (ACPR) is -51 dB.
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ABSTRACT: This paper presents design methods for delta-sigma (ΔΣ) analog to digital (A/D) converters having signal-transfer functions (STFs) with improved out-of-band signal attenuation. The trade-off between the improved attenuation of the STF and achieving a noise-transfer function (NTF) that optimizes the SNR of the A/D converter is made explicit.Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on; 06/2007
Conference Paper: Quality Based Handoff in DVB-H Systems Assisted by Cellular Network[Show abstract] [Hide abstract]
ABSTRACT: This paper introduces a novel seamless handoff approach for DVB-H networks aimed at reducing the user terminal power consumption and at making the handoff algorithm be driven by the quality of the user received signal. This implies the substitution of standard RSSI-based procedures with a method based on the Modulation Error Rate (MER) monitoring. The additional use of an underlying cellular network, for DVB-H related data delivering, allows to achieve additional advantages: a superior power saving and a faster handoff execution. Obtained results suggest that the DVB-H handoff protocol design is an issue, which definitely deserves further investigation in the view of making DVB-H an effective solution for delivering broadcast content to mobile users.Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE; 06/2008