Demodulated

The vast majority of the tapes are recorded in "pre-detection" mode, which means that the data was downshifted in frequency from S-band to a 10 Mhz IF and then written to the tapes before the data was demodulated. ❋ Unknown (2009)

The reciever is then equiped with its own oscillator in order to remix with the transmitted side band and produce an intermediate frequency (IF), which is then demodulated to produce the original modulating frequency. ❋ Julianne (2008)

Using the included software, you can play the demodulated radio signals through your PC, or encode them as MP3 or WAV files on your drive. ❋ Unknown (2003)

The demodulated reception data is sent to the control section. ❋ Unknown (2010)

Each demodulation also includes an Audio Waveform display that illustrates the time-domain demodulated waveform. ❋ Unknown (2010)

The 16 QAM signal is demodulated by using a new algorithm without deploying pilot-less processing. ❋ Unknown (2010)

What is the SNR at the demodulated output if the frequency of the message signal is changed to the following frequencies: • 100 Hz • The highest frequency that can be transmitted without exceeding the specified RF bandwidth What is the SNR at the demodulated output if the modulation index m is increased to 1? ❋ UniHertsECandEE (2010)

The demodulated audio goes to the same soundcard for output. ❋ Unknown (2010)

The specification for the link is as follows: Required signal to noise ratio (SNR) at the demodulated audio output of the receiver: 40 dB for a 1 kHz message signal at 50% modulation ❋ UniHertsECandEE (2010)

Simultaneously, the Audio Spectrum view details the demodulated audio spectrum, as well as the Rate, RMS deviation, ❋ Unknown (2010)

Compare the demodulated output from the receiver in the time domain and in the frequency domain for m = 1 and m = 1.1 and explain why a modulation index greater than 1 must be avoided in an AM link. ❋ UniHertsECandEE (2010)

The output of the DDC consists of a channel-filtered digital IF signal, which is then demodulated by a TigerSharc DSP. ❋ Unknown (2009)

The N4391A optical modulation analyzer closes this gap by offering new analysis tools such as constellation plane display of the demodulated signal and error vector magnitude analysis displaying the error compared to an ideal signal.

But what is actually happening during that phone call fills tens of thousands of pages of specification: frequency agile UHF radios constantly scan for available frequencies and negotiate connections; time division multiplexing weaves multiple calls together on a single channel; voice is encoded, encrypted, modulated, then demodulated, decrypted and turned back into audio, all in a channel barely wide enough to hold a 1930s Morse code signal. ❋ Unknown (2009)