Decoding for peak-power reduction and error-correction capabilities in multicarrier transmission

摘要

An input signal is encoded using a multicarrier code that provides a PEP reduction of 3k [dB] and a minimum distance d_min=√{square root over (2^k)} d, by restricting the code so as to have one or more 2^k+1-carrier kernels in which |Deltatheta(2^k)-Deltatheta*(2^k)|≡pi (for any k) holds for the phase difference Deltatheta(2^k) between a set of 2^k-1 carriers and another set of 2^k-1 carriers and the phase difference Deltatheta*(2^k) between a set of 2^k-1 carriers and another set of 2^k-1 carriers, where k is an integer not smaller than 1. By setting k to 1, and by further providing the condition |Deltatheta(2^k)-Deltatheta*(2^k)|=pi/2 between two kinds of 4-carrier kernels one equal in number to the other, a PEP reduction of 3.7 dB and d_min=√{square root over (2 d can be achieved. By extending the code length using these two kinds of 4-carrier kernels as basic units, a PEP reduction of 3k+0.7 [dB] and d_min=√{square root over (2^k)} d can be achieved.