In Ultra-wide Band Wireless Communications Blind Synchronized Algorithm Research

The ultra-wide band wireless communication have many merits, which are high data rate, high bandwidth, low power , low cost and anti-multi-path interference and so on, UWB has become preferred scheme in the short distance and high speed data transmission. But. it takes the bandwidth very wide, and the pulse duration is special short, they will bring the challenge to the signal capture.This article major research based on pulse radio ultra-wide band system synchronized technology. Firstly, we research several kind of synchronized scheme which are stated by the other, they exit many problems in these synchronized algorithm, it is very difficult to obtain the practical application. In such situation, TDT synchronization algorithm is proposed, TDT algorithm does not need each kind of hypothesis to obtain the signal capture, and it has the algorithm simply, the capture speed quick, the precision higher characteristic. However, TDT algorithm also has the disadvantage; it is difficult for TDT algorithm to acquire the synchronization in multi-users situation. Therefore one kind of new CABS algorithm is proposed, this algorithm have many merits like TDT algorithm, and CABS algorithm still could stabilize the work in the multi-user existence situation.This article has made system analysis to CABS algorithm through theory analysis and simulation experiment, under the same signal-to-noise ratio, CABS algorithm precedes TDT algorithm in the MSE and the BER. Therefore, CABS algorithm is one kind of extremely ideal ultra-wide band synchronization scheme, and CABS algorithm has provided the theory basis for the receiver structural design.