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US09407306B2 Quadrature amplitude modulation for time-reversal systems 有权
时间反转系统的正交幅度调制

Quadrature amplitude modulation for time-reversal systems
Abstract:
Time-reversal wireless communication includes: at a base station, receiving a probe signal from a terminal device; generating a signature waveform that is based on a time-reversed signal of a channel response signal derived from the probe signal; performing quadrature amplitude modulation (QAM) on a transmit signal to generate a quadrature amplitude modulated signal; and generating a transmission signal based on the quadrature amplitude modulated signal and the signature waveform.
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