IPC Definitions - January 01, 2012

H04B 7/00 - Definition fr

Definition statement

This main group covers:

Radio transmission systems wherein the information signal transmission is by electromagnetic waves other than light or infra-red.

References relevant to classification in this main group

This main group does not cover:

Near-field transmission systems, e.g. inductive loop type

H04B 5/00

Transmission systems employing beams of corpuscular radiation, or electromagnetic waves other than radio waves, e.g. light, infra-red

H04B 10/00

Suppression or limitation of noise or interference

H04B 15/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Diversity systems specially adapted for direction finding

G01S 3/72

Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems

G01S 13/74

Aerials

H01Q

Selecting arrangements to which subscribers are connected via radio links

H04W

Synonyms and Keywords

CDMA

Code Division Multiple Access

CDMA - TDMA

Hybrid Code- Time Division Multiple Access

FDMA

Frequency Division Multiple Access

FDMA - TDMA

Hybrid Frequency Time Division Multiple Access

SDMA

Space Division Multiple Access

SSMA

Spread-Spectrum Multiple Access

TDMA

Time Division Multiple Access