[ns] how to find the SNR and BER

2006-08-06 Thread sivagami amirthalingam

I am simulating Wireless network for IEEE 802.11standard. To analysis 
the network, I have chosen delay, througput , SNR and BER parameters. Any 
body can help me to calculate the SNR and BER value. 
 One more question. Any one tell how to set the value  'd' (no of 
packets after which the ack has to be sent by the sink)f or delayed 
acknowldegement of Agent/TcpSink/DelAck 
 Thank you
   Sivagami



-
 Here’s a new way to find what you're looking for - Yahoo! Answers 


[ns] how to analysis the performance of routing protocols

2006-08-06 Thread sivagami amirthalingam

I have simulated wireless network with 40 nodes. A node 1 is sending TCP 
tranffic to Node 38 which is about 600 km distance. I have tried with DSR, 
AODV, and DSDV routing protocol. I am interested in throughput and delay 
analysis. DSDV protocol is working fine and I can get the thorughput at node 
38. But the other two protocols fail to deliver the packet to the destination. 
I have used the same code for all the protocols. The same code works fine with 
a network having only two nodes and all the protocols could deliver the packet 
to the desitination. Can any body help me to understand/explain this situation? 
   
  Thank you
   Sivagami



-
 Here’s a new way to find what you're looking for - Yahoo! Answers 


[ns] How to measure the signal to interference value

2006-08-03 Thread sivagami amirthalingam

I am simulating Wireless network for IEEE 802.11standard. To analysis the 
network, I have chosen delay, througput , SNR and BER parameters. Any body can 
help me to calculate the SNR and BER value. 
   
  One more question. Any one tell how to set the value  'd' (no of packets 
after which the ack has to be sent by the sink)f or delayed acknowldegement of 
Agent/TcpSink/DelAck
  Thank you
  Sivagami


-
 Here’s a new way to find what you're looking for - Yahoo! Answers