Interlayer modulation method, device, orthogonal frequency division multiple access method and transmitter
A modulation method and a technology of symbol modulation, applied in the field of communication, can solve the problem that the spectrum is not fully utilized, and achieve the effect of improving spectrum utilization, increasing space distance, and reducing interference
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[0021] An embodiment of the present invention provides an interlayer modulation method using layered interleaving coding. In at least one layer of the interlayer modulation, amplitude adjustment and / or phase offset are performed on signals after symbol modulation. The embodiment of the present invention also provides a corresponding interlayer modulation device, an OFDMA access method and an OFDMA transmitter. Each will be described in detail below.
[0022] The basic flow of the interlayer modulation method in the embodiment of the present invention can be referred to figure 2 , mainly including steps:
[0023] A1. Convert the serial data stream into an N-layer data stream for parallel transmission, where N is an integer greater than or equal to 2.
[0024] Based on the idea of layered multiplexing of the layered modulation (LM: Layered Modulation) method in this embodiment, it is necessary to convert the serial data stream into a parallel data stream through serial-to-p...
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