# what is meant by the following terms

Status
Not open for further replies.

#### mohamed77

##### Newbie level 5
angle modulation mathworld

what is meant by the following terms "some refrences may be suggested":
1- matched filters
2- AWGN
3- linear modulation
4- hermitian transpose "for matrices"
5- kronecker product
6- kronecker delta
thank u

#### eecs4ever

##### Full Member level 3
1. Matched filters :

used in receivers to extract out the signal content.

2. AWGN

It stands for additive white gaussian noise. This is the standard model
for noise for many communication channels.

http://en.wikipedia.org/wiki/AWGN

3. Linear Modulation

This a modulation technique. The digital data is linearly encoded into the amplitude of the signal.

4. Hermitian Transpose

This is also called conjugate transpose.
so given a matrix A.

to compute the Hermitian transpose of A,
you can take its transpose, and then conjugate all of its elements.

http://mathworld.wolfram.com/ConjugateTranspose.html

5. Kronecker Product

6. Kronecker Delta
http://en.wikipedia.org/wiki/Kronecker_delta

Hope that helps.

### mohamed77

Points: 2

#### electronics_kumar

1)amplitude modulation is linear modulation and angle modulation falls under non linear modulation...
noise will add with signal...it will have gaussion distribution....its value will a constant one for all frequencies..for that it is called with name tag "white"

#### neils_arm_strong

##### Full Member level 5
The first 3 topics can be found in any communications text.The 4th can be found in any math text.
The last two I don't know

Status
Not open for further replies.