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  • SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING  (1)
  • complex Wishart forms  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Expectations of useful complex Wishart forms (1994)
    Springer
    Multidimensional systems and signal processing 5 (1994), S. 263-279 
    Details
    ISSN: 1573-0824
    Keywords: Complex Wishart distributions ; complex Wishart forms ; complex multivariate statistics ; array processing ; adaptive beamforming
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Complex Wishart matrices are a key part of many multidimensional signal processing algorithms, and expectations of expressions containing them are needed to quantify their performance. In this paper we derive concise formulas forE{WAW},E{W −1 AW −1}, and other useful expressions, whereW follows the complex Wishart distribution andA is a deterministic matrix.A need not be symmetric. We show how the results can be used to quantify the performance of adaptive array processing algorithms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980709
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    Paper (German National Licenses)
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  • 2
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    Precision waveform shaping and precompensation for high data rate space coomunications systems (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper studies a memory-based pulse shaping and traveling wave tube precompensation technique applied to high data rate satellite communications. Baseband I and Q waveforms are synthesized from data stored in a distributed arithmetic architecture. The waveforms are adjusted to minimize intersymbol interference spectral bandwidth and traveling wave tube distortion. We evaluate its performance in a simulated bi-phase shift keying (BPSK) link. The results show that memory-based precompensation has great potential to improve link performance.
    Keywords: SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
    Type: International Journal of Satellite Communications (ISSN 0737-2884); 12; 2; p. 157-166
    Format: text
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    NASA TECHNICAL REPORTS
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