|
|
Post by Kroun1 on Dec 30, 2004 4:16:19 GMT -5
Could anybody explain how to simulate multipath channel in Matlab  I have a vector of discrete numbers to transfer it through the channel. I don't know how should this vector change and how create this simulation in Matlab. |
|
|
|
Post by charan langton on Dec 30, 2004 17:10:39 GMT -5
First you need to decide if this is indoor or outdoor channel. Indoor channels have different multipath than outdoors. Indoor channels are nealry Raleigh since there is very little direct component, most of it is reflected. Hata is one model that is often used to model the multipath for indoors. To model, you would replicate your transmit channel, delay it by expected delay spread and atteuate it using a fading filter of some sort.
Outdoor channels can be modeled as log-normal, with several copies of the data, each delayed by more than a symbol and attentuated. A simple model would leave out the fading filter.
Charan Langton
|
|
|
|
Post by Andreas on Jan 20, 2005 22:35:06 GMT -5
I've implemented the Naftali channel model in Matlab. This model is the standard model for indoor WLAN environments. If you would like, I can send you the m file.
Write to me at aschwarzinger@d2d.com so I have your email address.
Andy
|
|
|
|
Post by Ali Hassan on Jan 26, 2005 5:54:03 GMT -5
i am not understanding the convolutional encoder of Figure 18 of TCM Tutorial. Is it correct or I am not understanding it properly because the Trellis for that is not making sense as per diagram is concerned.
Please help
|
|
I have a vector of discrete numbers to transfer it through the channel. I don't know how should this vector change and how create this simulation in Matlab.