Efficient, high-performance and low-complexity orthogonal frequency-division multiplexing index modulation transmission method
A low-complexity, transmission method technology, applied in transmission systems, digital transmission systems, modulated carrier systems, etc., can solve the problems of unfavorable receiver detection, reduce system bit error rate performance, high complexity, etc., to reduce detection complexity , Improve transmission efficiency and improve performance
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[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0041] According to the embodiment of the transmitter signal transmission of the high-efficiency, high-performance and low-complexity OFDM index modulation transmission method proposed by the present invention, as figure 1 shown, follow these steps:
[0042] 1) First set the number of subcarriers of Orthogonal Frequency Division Multiplexing (OFDM-IM) to N, which is also the size of the Fast Fourier Transform (FFT), and divide them into g subgroups, then each subgroup The number of subcarriers is n, that is, n=N / g, and assuming that the number of activated subcarriers in each subgroup is k, there are a total of C(n,k) activation schemes, where C(n,k) means from Select all combinations of k carriers in n.
[0043] 2) According to Represents the rounding down operation to get p 1 A value representing the number of bits for the subcarrier ...
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