Frequency Division Duplex
E524099
Frequency Division Duplex is a communication method in which uplink and downlink transmissions occur simultaneously on separate frequency bands, commonly used in cellular and wireless networks.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
communication technique
ⓘ
duplexing method ⓘ |
| abbreviation | FDD ⓘ |
| alsoKnownAs | frequency‑division duplexing ⓘ |
| appliedInStandard |
5G NR FDD
ⓘ
GSM NERFINISHED ⓘ LTE FDD NERFINISHED ⓘ UMTS FDD NERFINISHED ⓘ cdma2000 NERFINISHED ⓘ |
| benefit |
good support for continuous services like voice
ⓘ
low latency between uplink and downlink ⓘ simultaneous voice and data transmission ⓘ |
| challenge |
less flexible for asymmetric traffic patterns
ⓘ
more complex RF hardware due to duplexers ⓘ requires paired spectrum allocation by regulators ⓘ |
| contrastedWith | Time Division Duplex NERFINISHED ⓘ |
| contrastsInResourceSeparationWith |
code separation in CDMA systems
ⓘ
time separation in TDD ⓘ |
| governedBy | spectrum allocation regulations ⓘ |
| hasDesignParameter |
channel bandwidth per direction
ⓘ
guard band width ⓘ uplink–downlink frequency separation ⓘ |
| hasProperty |
enables full duplex communication
ⓘ
less sensitive to uplink–downlink interference than TDD ⓘ often used in coverage‑oriented deployments ⓘ provides constant transmit and receive channels ⓘ requires paired spectrum ⓘ supports simultaneous uplink and downlink ⓘ uplink and downlink are separated by guard band ⓘ uses separate frequency bands for uplink and downlink ⓘ well suited for symmetric traffic ⓘ |
| implementedUsing |
guard band between uplink and downlink frequencies
ⓘ
separate downlink carrier frequency ⓘ separate uplink carrier frequency ⓘ |
| relatedConcept |
downlink frequency band
ⓘ
full‑duplex communication ⓘ paired spectrum band ⓘ uplink frequency band ⓘ |
| requires |
duplexer in radio front‑end
ⓘ
frequency planning for paired bands ⓘ |
| typicalIn | sub‑3 GHz cellular bands ⓘ |
| usedFor |
broad area cellular coverage
ⓘ
mobile data services ⓘ mobile voice services ⓘ |
| usedIn |
cellular networks
ⓘ
microwave links ⓘ mobile broadband networks ⓘ satellite communication systems ⓘ wireless communication systems ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.