Analysis on Novel UWB Modulation Scheme Based on Ambipolar Multi-Pulses

High efficient modulation technology plays an important role in UWB(Ultra-Wideband) high data-rate wireless application,and different modulation schemes lead to different communication performance and application scenarios.An improved UWB time-hopping modulation scheme called AMPPM(Ambipolar Multi-Pulse Position Modulation) was proposed,and the performance parameters such as channel capacity and maximum reliable transmission distance were analyzed for the proposed AMPPM.Theory analysis and simulation results show that AMPPM can get larger channel capacity than PPM(Pulse Position Modulation),namely AMPPM can achieve higher data-rate than PPM at a fixed pulse duration,and the simulation figure shows that the L-ary AMPPM can get the data rate of 333 Mbit/s when the pulse width is set 0.5 ns with comparison of 167 Mbit/s of L-ary PPM.In the aspect of maximum reliable communication distance,AMPPM can also get improvement comparied to PPM and PAM(Pulse Amplitude Modulation) under the same condition,and the maximum communication distance can get 8 meters under the data rate of 100 Mbit/s and the bit error rate of 10-4.