[WM]: Help Needed in Reed Solomon Encoding & DSSS

[Imran khan <imrankhan1984@gmail.com>]

Hi, i'm a student of computer science doing my final project is to implemet=   the solution proposed by D.A. Karras of Chalkis
Institute of Technology,  Automation Dept. and Hellenic Open University, Rodu 2, Ano Iliupolis,  Athens.
 * "A Second Order Spread Spectrum Modulation Scheme for Wavelet Based Low=   Error Probability Digital Image Watermarking" * in
this solution i need to encode the information bits using Reed Solomon=   Encoding (Error Correcting Technique). But i'm having
difficulty in  understanding the Reed Solomon Codes.  I'm generating the information bits in the from of [-1,1] only. the
sequenc= e  is random consisting of these two numbers only.
 My second problem is related to the Direct Sequence Spread Spectrum (DSSS)= .  I need to know the Pesudo Noise (PN) code needs to
be generated separately=   so that the information bits are spread OR the PN code is the data of the=   image?.   I'm
implementing the above solution in Java. and there is very little help=   available online regarding these two techniques in Java.
 Any one who has some idea of these two, or can suggest me somthing please=   do so.
 ANy kind of help will be appretiated
 Thank you

Imran Khan



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