Spatial correlation (wireless)

<p>In <a href="/facts/Wireless_communication/GfDoFwfo">wireless communication</a>, spatial correlation is the <a href="/facts/Correlation/egkluAEm">correlation</a> between a signal's <a href="/facts/Spatial_direction/Tj24mTJ8">spatial direction</a> and the average received signal gain.
Theoretically, the performance of wireless communication systems can be improved by having <a href="/facts/MIMO/1EXPB7Vl">multiple antennas</a> at the transmitter and the receiver. The idea is that if the <a href="/facts/Channel_(communications)/MtlxEShV">propagation channels</a> between each pair of transmit and receive antennas are <a href="/facts/Independence_(probability_theory)/NUzQtnUL">statistically independent</a> and <a href="/facts/Identically_distributed/othIRaWt">identically distributed</a>, then multiple independent channels with identical characteristics can be created by <a href="/facts/Precoding/2Dy3KA4g">precoding</a> and be used for either transmitting <a href="/facts/Spatial_multiplexing/qgXHwGFe">multiple data streams</a> or increasing the <a href="/facts/Diversity_combining/IRglKNFR">reliability</a> (in terms of <a href="/facts/Bit_error_rate/ovAAPFjV">bit error rate</a>). In practice, the channels between different antennas are often correlated and therefore the potential multi antenna gains may not always be obtainable.
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Spatial correlation (wireless) open-in-new

Spatial correlation (wireless)