Register

tenenbaum

783 views
1 votes
1 votes
A channel has a bit rate of 4 kbps and a propagation delay of 20 msec. For what range of frame sizes does stop-and-wait give an efficiency of at least 50 percent?
User Avatar

1 Answer

1 votes
1 votes
$\eta =1/(1+2a),a=Tp/Tt$

$\eta \geq 1/2\Rightarrow a = 1/2$

$\Rightarrow (Bandwidth *Tp)/bitsize=1/2$

$\Rightarrow bit size=160 bits$
• edited by
User Avatar
Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

0 votes
0 votes
1 answer
1
reena_kandari asked Sep 2, 2016
6,350 views
tenenbaum
A bit stream 10011101 is transmitted using the standard CRC method described in the text. The generator polynomial is $x^3+1$. Show the actual bit string transmitted. Suppose the third bit from the left is inverted during transmission. Show that this error is detected at the receiver's end.
A bit stream 10011101 is transmitted using the standard CRC method described in the text. The generator polynomial is $x^3+1$. Show the actual bit string transmitted. Sup...
User Avatar
0 votes
0 votes
1 answer
2
reena_kandari asked Sep 2, 2016
748 views
tenenbaum
A 12-bit Hamming code whose hexadecimal value is 0xE4F arrives at a receiver. What was the original value in hexadecimal? Assume that not more than 1 bit is in error.
A 12-bit Hamming code whose hexadecimal value is 0xE4F arrives at a receiver. What was the original value in hexadecimal? Assume that not more than 1 bit is in error.
User Avatar
Link Copied!