Essays about: "thesis on noise level measurement"

Showing result 31 - 35 of 37 essays containing the words thesis on noise level measurement.

  1. 31. Embedding data in an audio signal, using acoustic OFDM

    University essay from Kommunikationssystem

    Author : Shuai Wang; [2011]
    Keywords : acoustic; acoustic OFDM; power control; embed;

    Abstract : The OFDM technology has been extensively used in many radio communicationtechnologies. For example, OFDM is the core technology applied in WiFi, WiMAXand LTE. Its main advantages include high bandwidth utilization, strong noise im-munity and the capability to resist frequency selective fading. READ MORE

  3. 32. Quantization Effects Analysis on Phase Noise and Implementation of ALL Digital Phase Locked-Loop

    University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Author : Jue Shen; [2011]
    Keywords : All Digital Phase-Locked Loop ADPLL ; Quantization Step; Non-linear quantization effect; Non-linear PLL noise model; Phase Noise; Matlab Modeling; Verilog Behavior Modeling.;

    Abstract : With the advancement of CMOS process and fabrication, it has been a trend to maximize digital design while minimize analog correspondents in mixed-signal system designs. So is the case for PLL. PLL has always been a traditional mixed-signal system limited by analog part performance. READ MORE

  4. 33. Design and evaluation of a capacitively coupled sensor readout circuit, toward contact-less ECG and EEG

    University essay from Institutionen för systemteknik

    Author : Daniel Svärd; [2010]
    Keywords : sensors; ecg; eeg; low noise; low frequency; electronics; readout; pcb; electrophysiological signals; amplifier; instrumentation amplifier;

    Abstract : In modern medicine, the measurement of electrophysiological signals play a key role in health monitoring and diagnostics. Electrical activity originating from our nerve and muscle cells conveys real-time information about our current health state. READ MORE

  5. 34. Image Theory Applied to virtual Microphones

    University essay from Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Author : Carlos Hernandez Matas and Diana Gomez Olmedilla; [2008]
    Keywords : acoustics; image theory; geometry; reverberation;

    Abstract : Virtual sensing is the art of measuring a quantity at a certain spatial position without having a physical sensor placed at that exact same position. In practical applications, this technique is sometimes very useful, when it is not feasible to put the sensor at the position where the physical quantity should be measured. READ MORE

  6. 35. Measuring techniques of Induced Polarization regarding data quality with an application on a test-site in Aarhus, Denmark and the tunnel construction at the Hallandsås Horst, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Carl-Henrik Månsson; Jonas Siikanen; [2007]
    Keywords : Induced Polarization; capacitive coupling; separated cables; chargeability; CVES; the Hallandsås Horst; inducerad polarisation; kapacitiv koppling; separerade kablar; Hallandsås; Earth and Environmental Sciences;

    Abstract : It has been shown that surveys of Induced polarization (IP) often contain data of low quality, because it is highly sensitive against different noise sources. When measuring induced polarization, where the method uses multicore cables and continuous electrode sounding (CVES, Continuous Vertical Electrical Sounding), noise phenomena such as capacitive coupling effects have to be considered. READ MORE