OAM MULTIPLEXING COMMUNICATION SYSTEM AND INTER-MODE INTERFERENCE COMPENSATION METHOD
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United States of America
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Apr 15, 2021
app pub date -
Mar 28, 2019
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Mar 28, 2019
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Abstract
An OAM multiplexing communication system multiplexes signals of one or more sequences for each OAM mode. A transmitting station includes a transmitting antenna using an M-UCA, and an OAM mode generation unit that simultaneously generates one or more OAM modes from each UCA. A receiving station includes a receiving antenna equivalent to the M-UCA, an OAM mode separation unit that separates signals received by each UCA for each OAM mode, and a channel estimation/interference compensation unit that compensates for inter-mode interference between the OAM modes by using a weight. The channel estimation/interference compensation unit selects, for each OAM mode, signals of a subject mode and an adjacent mode from among the signals of the OAM modes separated by the OAM mode separation unit, and compensates for the inter-mode interference by multiplying an approximate weight calculated by using channel matrixes of the subject mode and the adjacent mode.
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