Breaking News
Comments
zeeglen
User Rank
Blogger
bits and Bytes and Megas and millis
zeeglen   4/22/2014 9:55:29 AM
NO RATINGS
...efficient modulation schemes allow us to carry more MBits/mHz through the air.

Sounds like a nice device, but here is a Bit of nitpick:

Convention is that Bytes is uppercase B, bits is lower case b.  Mega is uppercase M,  milli is lowercase m, data rate is per second s.

So rate should read Mb/s/MHz; unless of course a truly amazing breakthrough allows us to squeeze Mbits/second into millihertz of bandwidth.  Yes, Mbits can be sent in mHz, but takes an awful long time.

Nice to see Hz and dBm uppercase in honour of the genius scientists that figured these out way back when. Have seen some uses of db by those unaware of the reason.

rbv
User Rank
Freelancer
Re: bits and Bytes and Megas and millis
rbv   4/22/2014 5:53:01 PM
NO RATINGS
But then you can cancel the prefixes, to get bps/Hz.  After that, multiply the seconds and Hertz in the denominator.  And discover that the quantity actually being sought is (bits/symbol).  But according to Shannon, that really means optimization of SNR.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Aging Brass: Cow Poop vs. Horse Doo-Doo
Max Maxfield
32 comments
As you may recall, one of the things I want to do with the brass panels I'm using in my Inamorata Prognostication Engine is to make them look really old. Since everything is being mounted ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
11 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
11 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
45 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)