This workissupported by National"863"High Technology Research Programof China (2005AA123320) ;Universities Natural Science Research Pro-ject of Jiangsu Province (05KJB510101) .
An anti-interference orthogonal coding is introduced based on Hadamard code and Orthogonal Frequency-Division Multiplexing (OFDM), in which all sub-channels of Ultra-WideBand (UWB) system are divided into M sub-ba...