| 摘要 |
Disclosed herein is a demapping device and method for a Modified Dual Carrier Modulation (MDCM) system. The demapping device comprises: the received signal processing unit receives an MDCM signal preprocessed by an operation preparation unit, and calculates differences between squares of distances between the received signal and a plurality of constellation points; the index search unit searches for a constellation point closest to the received signal based on the differences between squares of distances between the received signal and each of a plurality of constellation points; and the demapping operation unit searches for constellation points close to the closest constellation point, and sends demapping result data to a decoding device. The demapping result is obtained by demapping based on differences between squares of distances between the closest constellation point and the close constellation points.
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