DIFF Subgroup
H04B 17/309 Measuring or estimating channel quality parameters
Introduced: January 2015
Full Title
Full titles differ between systems:
IPC:
Monitoring; Testing > of propagation channels > Measuring or estimating channel quality parameters
CPC:
Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07) > of propagation channels > Measuring or estimating channel quality parameters
Of 7 combined children, 5 exist in both systems.
2 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2015.
Child Classifications
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- H04B 17/336 Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] since 2015 IPC+CPC Available in IPC and CPC