ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    A nonlinear-coherence receiver (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Mathematical analysis and detailed study of generic model for coherent receiver has demonstrated that nonlinear coherence between given biphase-modulated input signal and supplied reference signal can be used in receivers to improve telecommunication systems.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-11921
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Demodulator aids synchronization (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Decision-feedback loop synchronizes multiple-amplitude and phase-shift keyed signals.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-13605 , NASA Tech Briefs (ISSN 0145-319X); 1; 2; P. 172
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Double Differential Encoding And Detection In MPSK (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Proposed communication system based on multiple-phase-shift-keying (MPSK) modulation includes double differential encoder in transmitter and double differential detector in receiver. Transmitter generates phase-modulated signal suitable for decoding and detection by subsystem. Detector removes Doppler-frequency component from noisy, Doppler-shifted signal encoded in subsystem. Overall effect of double-differential scheme to cancel effect of Doppler shift on modulation in received signal. Not necessary to estimate Doppler shift to correct for it.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-17666 , NASA Tech Briefs (ISSN 0145-319X); 14; 6; P. 46
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Trellis-Coded MDPSK System With Doppler Correction (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Multiple-differential-phase-shift-keyed (MDPSK) microwave system designed for communications between mobile and/or fixed terrestrial stations via satellite transponders. Stations in system transmit and receive data or digitally-coded voice signals at rates up to 4.8 kb/s in channels only 5 kHz wide. Incorporates advanced encoding, decoding, modulation, and demodulation techniques to minimize effects of error bursts. Uses feedforward techniques for fast recovery from deep fades.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-17644 , NASA Tech Briefs (ISSN 0145-319X); 14; 4; P. 40
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Fast Correction For Doppler In MDPSK Signals (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Detector of multiple differential phase-shift-keyed (MDPSK) signals designed to effect combination of open-loop estimation of frequency and differential detection of digital modulation. Improved design expected to decrease probability of bit errors in situations in which carrier frequency uncertain and signals transmitted in bursts too short to allow closed-loop tracking of carrier frequency - for example, in transmission of digitally-coded voice signals in land-mobile/satellite communications at ultra-high frequencies.
    Keywords: ELECTRONIC SYSTEMS
    Type: NPO-16987 , NASA Tech Briefs (ISSN 0145-319X); 13; 5; P. 34
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...