Signal transmission method based on binary phase shift keying modulation and orthogonal frequency division multiplexing
A phase shift keying and quadrature frequency division technology, applied in the field of communication, can solve the problem of inability to guarantee signal transmission performance, and achieve the effects of reducing demodulation error rate, improving reception signal-to-noise ratio, and low transmission error rate performance
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[0037] In order to make the above and other objects, features, and advantages of the present invention more obvious, the following describes the embodiments of the present invention in conjunction with the accompanying drawings in detail.
[0038] figure 2 It is a flow chart of the method of the present invention, combined with figure 2 Shown to further illustrate the method of the present invention. The signal transmission method of the present invention is divided into two stages: a signal transmission stage and a signal reception stage. The steps of the signal transmission stage are as follows:
[0039] S1-1. Perform BPSK constellation mapping on N binary digital bit sequences to obtain a mapping sequence A=[a 1 ,a 2 ,...,A n ,...,A N ], where a n =1 / -1, n=1,2,...,N, N is the number of sub-carriers in the communication system, every N binary digital bit sequence generates 1 OFDM symbol, N can be divisible by 8, and its value is an exponent of 2. Power
[0040] S1-2. Perform group...
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