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  • 1
    Electronic Resource
    Electronic Resource
    On the steady-state queue size distribution of the discrete-timeGeo/G/1 queue with repeated customers (1995)
    Springer
    Queueing systems 21 (1995), S. 199-215 
    Details
    ISSN: 1572-9443
    Keywords: Discrete-time queues ; generating functions ; recursive computation ; retrial queues ; stochastic decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract In this paper, we study the steady-state queue size distribution of the discrete-timeGeo/G/1 retrial queue. We derive analytic formulas for the probability generating function of the number of customers in the system in steady-state. It is shown that the stochastic decomposition law holds for theGeo/G/1 retrial queue. Recursive formulas for the steady-state probabilities are developed. Computations based on these recursive formulas are numerically stable because the recursions involve only nonnegative terms. Since the regularGeo/G/1 queue is a special case of theGeo/G/1 retrial queue, the recursive formulas can also be used to compute the steady-state queue size distribution of the regularGeo/G/1 queue. Furthermore, it is shown that a continuous-timeM/G/1 retrial queue can be approximated by a discrete-timeGeo/G/1 retrial queue by dividing the time into small intervals of equal length and the approximation approaches the exact when the length of the interval tends to zero. This relationship allows us to apply the recursive formulas derived in this paper to compute the approximate steady-state queue size distribution of the continuous-timeM/G/1 retrial queue and the regularM/G/1 queue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01158581
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  • 2
    Electronic Resource
    Electronic Resource
    Design of W-Band Tripler (2000)
    Springer
    International journal of infrared and millimeter waves 21 (2000), S. 271-276 
    Details
    ISSN: 1572-9559
    Keywords: W-band tripler ; Schottky barrier diode ; wide-band
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes a high performance W-band tripler with a novel structure. Input frequency is 25-36.7 GHz, output frequency 75-110 GHz, input power is 20dBm and conversion loss 16 dB. It can extend microwave signal to W-band (adding in Ka-band doubler). In the design, we give some approaches to achieve high band performances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006609103007
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