Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results for aloha
Search options not deleted
0
votes
1
answer
787
views
0
votes
0
answers
193
views
why vulnerable time in pure aloha is not tp
My question is- Why that is not true in the case of Aloha ?. Why we do not have the same vulnerable time in Aloha?
That question has already been asked but no responses.- Vulnerable Time in ALOHA …
- 177
0
votes
0
answers
155
views
Probability in Dynamic frame aloha
If I've RFID Collision Arbitration System that is based on multi-frame dynamic frame ALOHA. How can compute the probability of the average tag resolution $L_n$? …
- 1
4
votes
2
answers
1k
views
Why analysis of Aloha protocol uses Poisson distribution?
Pretty much in all of the analysis of the Aloha protocol that I read, it is assumed that the distribution of packet arrivals is Poisson. What is the rationale behind it? …
- 541
1
vote
1
answer
2k
views
Small doubt in vulnerable time of CSMA/CD and pure aloha
Even in pure aloha, I understand how is vulnerable time 2*Tt time is derived. Here Tt is transmission time. … My doubt is why don't we add or consider Tp time in pure aloha and Tt time in CSMA/CD when calculating vulnerable time. Why are we ignoring it ? …
- 993
2
votes
1
answer
1k
views
Why is the throughput (performance) of the Aloha protocol ≈ 0.18?
I've read in a few places (like here that the throughput - that is, the amount of good useful messages relative to capacity - of the ALOHA protocol for networks is roughly 0.18%. …
- 2,977
1
vote
1
answer
187
views
Aggregate Rate and Poisson Process in Aloha
I'm having a hard time understanding what is mean't by the aggregrate rate $\lambda$ and what it means for throughput in unslotted and slotted Aloha protocols. …
- 353
5
votes
2
answers
19k
views
Why is the throughput (performance) of the Slotted Aloha protocol ≈ 0.36
I've read that the throughput - that is, the amount of good useful messages relative to capacity - of the Slotted ALOHA protocol for communication networks is roughly 0.36%. …
- 2,977
1
vote
1
answer
2k
views
3
votes
1
answer
906
views
The throughput of the ALOHA protocol if the Binomial distribution was used
In all the examples of ALOHA I've seen, the Poisson distribution is used. Theoretically, how could the throughput be calculated if a Binomial distribution was used instead? …
- 133
3
votes
2
answers
515
views
Why does Slotted Aloha work?
So the way I understand it, if station A and station B, for example, try to transmit a frame at the same slot, a collision occurs, leading to an attempt at the next slot. But wouldn't the algorithm ju …
- 33
0
votes
1
answer
51
views
MAC protocol with throughput of 1
Consider a MAC protocol (ALOHA, CSMA, TDMA, etc.) that, even for very high loads, always results in a throughput of 1 (normalized with respect to the channel speed). …
- 125
5
votes
5
answers
16k
views
Why is the vulnerable time in pure aloha twice the frame time?
The time required to send a frame is called frame time.
Vulnerable time is the time during which no transmission should be done to avoid any collision.
My question is what kind of problem will be c …
- 77
2
votes
1
answer
110
views
Network throughput with random delay selected from uniform distribution
The maximum delay $D$ is a variable which should be tuned to maximise network throughput (akin to ALOHA).
Problem:
I'm trying to derive an expression for the network throughput. … I can't find any material on ALOHA with periodic transmissions, and can only find material where the probability of transmitting is poisson, and where each transmission is independent of the last. …
- 123
1
vote
1
answer
9k
views
Probability of Success in Slotted Medium Access
Slotted Aloha). There are $N$ nodes each transmitting in a given slot with probability $p$.
I understand that the probability a node is successful in a slot is $p(1 - p)^{N-1}$. …
- 353