IPC Definitions - January 01, 2012
H04B 7/00 - Definition
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 |
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 |
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 |