Diversity reception
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In telecommunications, diversity reception refers to a method for improving reception of a transmitted signal, by receiving and processing multiple versions of the same transmitted signal. The way in which those multiple versions of the signal are received, characterizes the diversity technique:
- space diversity: receiving multiple versions of the transmitted signal, that have followed a different propagation path. In the case of wired transmission, this can be achieved by transmitting via multiple wires. In the case of wireless transmission, this can be achieved by transmitting to multiple receiving antennas (antenna diversity).
- polarisation diversity: receiving multiple versions of a wirelessly transmitted signal via antennas with different polarisation.
- time diversity: receiving multiple versions of the same signal, being transmitted at different time instances
- frequency diversity: receiving multiple versions of the same signal, being transmitted at different carrier frequencies.
After receiving the multiple versions of the signal, a diversity combining technique is applied before further signal processing takes place.
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External links
- Diversity reception - Background information of the development of Diversity reception devices.el:Διαφορική λήψη