A multiuser UWB system based on truncated chaotic sequence

A new generation method for short sequence based on chaotic theory is presented,which is drawn out from the middle of the sequence. This method does not change the limit word-length error and is effective to produce chaotic digital sequence with the length needed. The modified truncated sequence (chaotic subset sequence) generated from the method is used in multiuser DS-UWB system and its performance is evaluated. Simulations show that the new short sequence based on chaos improves the performance of DS-UWB system effectively.