Register to reply

Data rate formula

by oneamp
Tags: data, formula, rate
Share this thread:
Feb8-14, 08:54 AM
P: 222
I am trying to come up with a good data-rate formula for a system. The system sends out 'x' symbols per transaction. The transactions take place sequentially, but there is a delay 'z' between them. 'z' is variable and can even be pseudo-random. Also each transaction takes a time as well, but that time is constant.

I tried to derive a formula for symbols sent by a time 't' (in seconds): sent_t = ts(transactions/second) - zt, but that didn't quite work out. Where can I go from here?

Since 'z' can be random, I can either make 'z' constant for the formula, or make the formula an average data-rate...

Thank you
Phys.Org News Partner Engineering news on
Researchers discover cool-burning flames in space, could lead to better engines on earth (w/ Video)
Professors object to FAA restrictions on drone use
UConn makes 3-D copies of antique instrument parts
Feb8-14, 09:46 AM
Sci Advisor
PF Gold
sophiecentaur's Avatar
P: 11,923
You seem to be talking about the effects of Phase Noise or Jitter, on error rate here. I Googled those terms and there were loads of hits. Trawl through a few of them a see if anything suits your 'level'. That could be more efficient for you, initially. You could then come back with some more specific queries.
Feb8-14, 04:24 PM
P: 1,074
lets call the delay time Tz, the packet time Tp and the number of packets n

For convienience assume there are an equal number of packets and delays (you can delete the last Tz if you want).

Since every Tz is unique you need to sum those delays (sum)Tz (Like Tz1+Tz2... to Tzn) and add the delay for the number of packets n*Tt to get the total time.

You cannot determine how many packets fit in a time without an expression for the interpacket delay. If you know the number of packets, you can determine the total interpacket delay, but not the specific delay between any two sequential packets.

That should more you forward a bit. Post clarification if I misinterpreted what you are asking.

Feb8-14, 10:30 PM
P: 222
Data rate formula

Thanks both of you

Register to reply

Related Discussions
Speed and rate of data transfer Electrical Engineering 30
Data Rate VS TIS Electrical Engineering 0
Formula help needed... algebraic formula for intra-interval rate of acceleration General Math 2
Uart and data rate Electrical Engineering 12
Video Data Rate Computing & Technology 5