爬過文了關於這方面的資訊實在不多
小弟還是個程式的新手
現在大四這學期要把一個專題做出來
研究所學長是跟我說叫我看以下的paper把他用matlab模擬出來
1.Identify a coset of the code ,Wm包含於W,associated with
the desired message.This is the set of all vectors that
can represent message m.
2.Search through Wm to find the code vector,w,that is closet
to the vector ,C0,which will be added by the first noise source
(i.e w is the vector that is most simliar to the cover work C0 )
3.Transmitted wa=f(w,C0),where f(.,.) is a function that is analogous
to informed embedding. In Costa's construction,f(w,C0)=W-kC0,where
k is a constant.
這是第一個，看起來好像是要實現某個函數?
Traditional trellis codes
Each possible message corresponds to path through the trellis from node A0
(state A at time 0) to one of the nodes at the right (any state at time L)
We refer to the tradition from one column of nodes to the next column of
nodes as a step,and each such step corresponds to one bit in the coded
message.A bold arc is traversed if the corresponding bit is 1,a non-bold
arc is traversed if the corresponding bit is 0.
Each arc in the trellis is labelled with a randomly-generated,length N vector.
Each path ,and thus each message,is coded with a length L*N vector that is the
concatenation of the labels for the arcs it contains.
這個稍微懂一點，就是設計一種碼可以用在浮水印上?
請各位大大幫我看一下，我到底該怎麼做，這兩個文章的意思是要做什麼呢
還有坊間有什麼matlab的書比較好懂嗎，如果針對這個專題的話我應該要看哪個部分的
matlab的書?
先感謝各位了。
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