Why can't we divide the electromagnetic spectrum into arbitrarily many radio frequency bands?In a RAKE receiver, why is a Path Searcher needed? Can't the delays be found from the Channel Estimator?Calculating the voltage produced by Radio frequencyAntenna Length for Low Frequency Radio Signals - Why so long?What does the term “fixed” mean on the radio spectrum?Where on a cellphone does the electromagnetic radiation(radio frequencies) come from? the antennae or the transmitter?Why are the capacitors set up this way in this old tube radio?If an FM signal has different frequencies, how does the radio receive the signal in a fixed frequency?Why are radio signals clearer near the human body?In an AM radio do the electromagnetic waves cause the antenna to resonate to produce an alternating current?Consistent Radio wave detection timing
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Why can't we divide the electromagnetic spectrum into arbitrarily many radio frequency bands?
In a RAKE receiver, why is a Path Searcher needed? Can't the delays be found from the Channel Estimator?Calculating the voltage produced by Radio frequencyAntenna Length for Low Frequency Radio Signals - Why so long?What does the term “fixed” mean on the radio spectrum?Where on a cellphone does the electromagnetic radiation(radio frequencies) come from? the antennae or the transmitter?Why are the capacitors set up this way in this old tube radio?If an FM signal has different frequencies, how does the radio receive the signal in a fixed frequency?Why are radio signals clearer near the human body?In an AM radio do the electromagnetic waves cause the antenna to resonate to produce an alternating current?Consistent Radio wave detection timing
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
I understand there is concern over the limited amount of wireless spectrum available for allocation but am somewhat confused as to why. Couldn't we just divide the electromagnetic spectrum into as many radio frequency bands as we need by making the communication frequency more precise, i.e. broadcasting over 101.713 MHz instead of 101.7 MHz in order to make more room. What are the limiting factors preventing us from doing this?
rf wireless radio cellphone fm
asked Apr 23 at 0:15
nellapizzanellapizza
212
$endgroup$
|
show 1 more comment
$begingroup$
I understand there is concern over the limited amount of wireless spectrum available for allocation but am somewhat confused as to why. Couldn't we just divide the electromagnetic spectrum into as many radio frequency bands as we need by making the communication frequency more precise, i.e. broadcasting over 101.713 MHz instead of 101.7 MHz in order to make more room. What are the limiting factors preventing us from doing this?
rf wireless radio cellphone fm
asked Apr 23 at 0:15
nellapizzanellapizza
212
$endgroup$
$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
3
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
3
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02
|
show 1 more comment
$begingroup$
I understand there is concern over the limited amount of wireless spectrum available for allocation but am somewhat confused as to why. Couldn't we just divide the electromagnetic spectrum into as many radio frequency bands as we need by making the communication frequency more precise, i.e. broadcasting over 101.713 MHz instead of 101.7 MHz in order to make more room. What are the limiting factors preventing us from doing this?
rf wireless radio cellphone fm
asked Apr 23 at 0:15
nellapizzanellapizza
212
$endgroup$
I understand there is concern over the limited amount of wireless spectrum available for allocation but am somewhat confused as to why. Couldn't we just divide the electromagnetic spectrum into as many radio frequency bands as we need by making the communication frequency more precise, i.e. broadcasting over 101.713 MHz instead of 101.7 MHz in order to make more room. What are the limiting factors preventing us from doing this?
rf wireless radio cellphone fm
rf wireless radio cellphone fm
asked Apr 23 at 0:15
nellapizzanellapizza
212
asked Apr 23 at 0:15
nellapizzanellapizza
212
asked Apr 23 at 0:15
nellapizzanellapizza
212
asked Apr 23 at 0:15
nellapizzanellapizza
212
asked Apr 23 at 0:15
nellapizzanellapizza
212
212
$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
3
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
3
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02
|
show 1 more comment
$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
3
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
3
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02
$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
3
3
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
3
3
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02
|
show 1 more comment
1 Answer
1
active
oldest
votes
$begingroup$
Signals don't exist at a single frequency. They have a bandwidth that spreads across spectrum. The radio station at 101.7MHz takes up the spectrum from 101.6-101.8MHz.
answered Apr 23 at 0:18
Charles HCharles H
1761
$endgroup$
add a comment |
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1 Answer
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$begingroup$
Signals don't exist at a single frequency. They have a bandwidth that spreads across spectrum. The radio station at 101.7MHz takes up the spectrum from 101.6-101.8MHz.
answered Apr 23 at 0:18
Charles HCharles H
1761
$endgroup$
add a comment |
$begingroup$
Signals don't exist at a single frequency. They have a bandwidth that spreads across spectrum. The radio station at 101.7MHz takes up the spectrum from 101.6-101.8MHz.
answered Apr 23 at 0:18
Charles HCharles H
1761
$endgroup$
add a comment |
$begingroup$
Signals don't exist at a single frequency. They have a bandwidth that spreads across spectrum. The radio station at 101.7MHz takes up the spectrum from 101.6-101.8MHz.
answered Apr 23 at 0:18
Charles HCharles H
1761
$endgroup$
Signals don't exist at a single frequency. They have a bandwidth that spreads across spectrum. The radio station at 101.7MHz takes up the spectrum from 101.6-101.8MHz.
answered Apr 23 at 0:18
Charles HCharles H
1761
answered Apr 23 at 0:18
Charles HCharles H
1761
answered Apr 23 at 0:18
Charles HCharles H
1761
answered Apr 23 at 0:18
Charles HCharles H
1761
1761
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$begingroup$
Do a web search on "channel capacity". There's a strong correlation on occupied bandwidth and data rate -- and the more channels you shove into a given bandwidth, of necessity the narrower those channels need to be.
$endgroup$
– TimWescott
Apr 23 at 0:18
$begingroup$
@TimWescott Thanks, that is exactly the information I was looking for but couldn't find the name.
$endgroup$
– nellapizza
Apr 23 at 0:26
3
$begingroup$
It's kind of like trying to make more room in a box by dividing it up into arbitrarily small compartments. The compartments get less useful because each one can hold less and less.
$endgroup$
– Toor
Apr 23 at 1:36
3
$begingroup$
Information is carried along in SIDEBANDS. To preserve the information, the sidebands need substantial energy and cannot be arbitrarily filtered.
$endgroup$
– analogsystemsrf
Apr 23 at 2:19
$begingroup$
This is actually where the term bandwidth comes from - the band needs some width. Put overy simply, the more (band)width the more information you can reliably transmit over said band. Hence the less (band)width, the less information, until the band gets too narrow to be of any use.
$endgroup$
– Pavel
Apr 23 at 9:02