By James Roberts, Ugo Mocci, Jorma Virtamo (eds.)
This coherently established and authorative textual content is the ultimate document of the ecu motion price 242, dedicated to advancing study within the box of multiservice community layout and function evaluation.
The first-class effects awarded are mostly in accordance with a few 240 motion reviews compiled in cooperation among researchers from academia and pros from and mentioned throughout the fee 242 conferences. The 18 chapters of the booklet are divided into components on site visitors regulate in broadband networks, broadband community layout, and site visitors types and queueing research; additionally integrated is a bibliography directory 412 entries. This paintings basically advances the state-of-the-art within the quarter and is suitable to the overseas networking neighborhood at large.
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Additional resources for Broadband Network Traffic: Performance Evaluation and Design of Broadband Multiservice Networks
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200 Lognormal PDF t . . . . . 300 I ' ' , l , 400 .... i . . . 500 , i , ~ ' . . . 3: QQ-plot for the GOP sizes of the dlno sequence. 2 shows the frame size histograms of the I, P, and B frames of the dino sequence. The shapes of the curves indicate that the I-frames m a y be approximated by a Normal pdf, whereas the P and B-frames have a histogram resembling a G a m m a or a lognormal pdf. The good agreement of the histogram and the G a m m a curve becomes more obvious if we use a QQ-plot (quantile-quantile-plot), where G a m m a or lognormal quantiles are plotted against the histogram quantiles.
The compression algorithm is used to reduce the data rate before transmitting the video stream over communication networks. This is done by both reducing the spatial and the temporal redundancy of the video data stream. The spatial redundancies are reduced by transforms and entropy coding and the temporal redundancies are reduced by prediction of future frames based on motion vectors. This is achieved using three types of frames (el. 1): I - f r a m e s use only intra-frame coding, based on the discrete cosine transform and entropy coding; P - f r a m e s use a similar coding algorithm to I-frames, but with the addition of motion compensation with respect to the previous I- or P-frame; 20 1.
Broadband Network Traffic: Performance Evaluation and Design of Broadband Multiservice Networks by James Roberts, Ugo Mocci, Jorma Virtamo (eds.)