The determination of the optimal sequence of rnulticomponent separation process is presented by usjngthe generalized least deviation priority method of comparison matrix.

There is a multiplicative group among the permutation groups,the sequence obtained under the action of it is cyclic shift of related PTS,and the perfect sequence and its cyclic shifts compose an equivalence class.

With this algorithm,fast cell search can be achieved using the new hierarchical synchronous sequence instead of the original preamble to accomplish symbol timing,frequency offset estimation and cell ID detection.

The timing algorithm is proposed based on the preamble defined in IEEE802.

The time impulse response of the channel is estimated using the preamble sequence.

A scheme based on cyclic-shifted preamble sequences is proposed for carrier frequency synchronization in OFDM system.

Expression of Human Hepatitis B Virus Surface Antigen Gene with and without preS in Transgenic Tomato;

We construct plant expression vectors (pRoKII) with hepatitis B surface antigen gene(HBsAg) alone or with it conbined with preS,and introduce the recombinant plasmids into Agrobacterium tumenfaciens.