Breaking News
Comments
Newest First | Oldest First | Threaded View
rbv
User Rank
Author
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.

zeeglen
User Rank
Author
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.



Datasheets.com Parts Search

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

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.

Brought to you by:

Most Recent Comments
TGR0
 
dt_hayden
 
dt_hayden
 
billb57
 
ZolaIII
 
Hillol
 
Ian Johns
 
traneus
 
resistion
Like Us on Facebook
Special Video Section
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...