ENC3250 Solutions pg 12

ENC3250 Solutions pg 12 - c. Transmission efficiency N...

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Unformatted text preview: c. Transmission efficiency N (variable) 1.0 Nopt 0.9 0.8 0.7 N (fixed) 0.6 0.5 0.4 0.3 0.2 0.1 X 0 48 96 144 192 240 N for fixed-sized cells has a sawtooth shape. For long messages, the optimal achievable efficiency is approached. It is only for very short cells that efficiency is rather low. For variable-length cells, efficiency can be quite high, approaching 100% for large X. However, it does not provide significant gains over fixed-length cells for most values of X. 3.8 a. As we have already seen in Problem 3.7: N= b. D = L L +H 8× L R -12- ...
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This note was uploaded on 02/20/2012 for the course ENC 3250 taught by Professor Dr.timothycerner during the Fall '11 term at UNF.

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