What the white-space have to do with data transfer ?

Question

Welcome to super-wifi 300MHz to 400MHz. Wonder how things will changewith such gadgets. Having a single router for whole building/campus or720p uni-cast streaming to multiple nodes (NOT multi-cast) with betternode control. Loads of applications to come with location centriclogic... guess what? a new breed of TV would be around the corner. Iwould picture: a product of Internet-TV with quality of analog TV set.Any thoughts how things would change moving away form higher spectrumor I am missing something?Yet one more reason to say hello to N. Tesla, The Father of AC andwireless connectivity!ali

Ali · Accepted Answer

.OK, the questions :0) What hardware updates we need other than generator and PLL.1) Nothing for software.  (Firmware should be working seamlessly )regards,ali

Tim Wescott · Answer

1: New WiFi standards will need to be formulated, which will need software.  So turn "nothing" to "lots and lots".0: Try "entirely new receiver"-1: And _where_ is the channel capacity come from when the channel bandwidth is 100MHz wide and you'll be seeing interference from transmitters for miles around?-- Tim WescottWescott Design ServicesDo you need to implement control loops in software?"Applied Control Theory for Embedded Systems" was written for you.See details at

Paul Keinanen · Answer

You might take a look what Mr. Shannon has to say.

With a very high SNR, you can get a lot of data through in a limited bandwidth e.g. using nnnQAM directly or with multiple OFDM carriers, with each at nnnQAM.

A lot of transmissions can share a single frequency band using CDMA (DSSS), but the CNR will drop with each added transmission.

Spread spectrum does not help against white noise.

langwadt · Answer

...and then some, on the two wireless technologies I worked on I thinksomething like 5 years from concept till something that really worksand is being sold-Lasse

What the white-space have to do with data transfer ?

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