anti jam wireless modem - advice on design please

[emix]

anti jam wireless modem?

what is the way to design a wireless modem with anti jamming capability ?

some link and info about jamming methods and anti jamming for wireless system(data tx/rx) design is needed by me.

regards

 

[flatulent]

some problems

You will have to either hop over an unusually wide part of spectrum or direct spread over it.

Here are some more pointers.

1. Use highlydirective antennas at each end.

2. Operate in part of the spectrum that you are not expected to be. In some countries this can be done at limited power levels.

3. Even with spreading methods, if the jammer is close to the receiver and it is intentional, you cannot avoid it. If they are going to be illegal with their transmissions, they will be illlegal with the power levels as well.