Frequency Division Multiple Access
E566520
Frequency Division Multiple Access (FDMA) is a channel access method in which the available bandwidth is divided into distinct frequency bands so multiple users can transmit simultaneously on different frequencies.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| FDMA | 1 |
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
channel access method
ⓘ
multiple access scheme ⓘ |
| abbreviation | FDMA ⓘ |
| accessPrinciple |
assigns distinct frequency bands to different users
ⓘ
divides available bandwidth into multiple frequency channels ⓘ |
| advantage |
low latency due to continuous channel availability
ⓘ
predictable performance per user ⓘ simple implementation ⓘ |
| aimsTo | avoid interference between users by frequency separation ⓘ |
| allocates | fixed frequency channels to users ⓘ |
| canBeCombinedWith |
Code Division Multiple Access
ⓘ
Space Division Multiple Access NERFINISHED ⓘ Time Division Multiple Access NERFINISHED ⓘ |
| canUse | dynamic frequency assignment ⓘ |
| channelAssignmentType | orthogonal frequency channels ⓘ |
| contrastsWith |
Code Division Multiple Access
NERFINISHED
ⓘ
Space Division Multiple Access ⓘ Time Division Multiple Access ⓘ |
| disadvantage |
inefficient spectrum use under bursty traffic
ⓘ
limited flexibility for dynamic traffic patterns ⓘ requires guard bands that waste spectrum ⓘ susceptible to narrowband interference on a channel ⓘ |
| goal | share spectrum among multiple independent users ⓘ |
| historicalUse |
AMPS analog cellular system
ⓘ
NMT analog cellular system ⓘ TACS analog cellular system ⓘ |
| isUsedIn |
1G cellular networks
ⓘ
aeronautical communication systems ⓘ analog cellular systems ⓘ maritime communication systems ⓘ microwave radio relay systems ⓘ satellite communication systems ⓘ trunked radio systems ⓘ |
| mediumSharingMethod | frequency division ⓘ |
| multiplexingType | orthogonal multiplexing in frequency domain ⓘ |
| operatesOn | radio frequency channels ⓘ |
| relatedConcept |
channelization
ⓘ
co-channel interference ⓘ frequency reuse ⓘ guard band ⓘ |
| requires |
channelized RF front-ends
ⓘ
coordination by a central controller or planning authority ⓘ frequency planning ⓘ frequency-selective filters ⓘ frequency-stable oscillators ⓘ guard bands between adjacent channels ⓘ |
| resourceDimension | frequency ⓘ |
| supports | simultaneous transmission by multiple users ⓘ |
| typicalImplementation | narrowband channels with fixed bandwidth ⓘ |
| usedFor |
downlink channels in some satellite systems
ⓘ
uplink channels in some satellite systems ⓘ |
| usesResourceType | frequency spectrum ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
FDMA