205 / 2014-12-05 10:24:26

Research On Performances Of A Wireless Communication System Based On Single Sensor Passive Time Reversal Mirror

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Time Reversal technology is introduced into a wireless communication system. On the basis of discussing the principle of Time Reversal Mirror, a wireless communication model employing the single sensor passive time reversal mirror is constructed as well as the focusing gain of the model is calculated. Limitations of formula deduction in subsistent literatures about the expression of received signals, together with effects on pilot signal choosing caused by these limitations are analyzed. System performance of the model is studied by simulation and the results show that, given certain communication channel conditions, system performance depends heavily on pilot signal. When the instantaneous square impulse is applied to the system as a pilot signal, the system will achieve excellent performances even when the signal noise ratio is very low. In the simulation, 3 different kinds of pilot signals are employed and their different effects on received waveform are also analyzed in detail by simulation experiment which also indicates clearer principles of pilot signal choosing.