Alimony...but how much???

Dear All, 

1. I am an unemployed husband deserted by my wife by 7 months. 

2. Have no property on my name. 

3. Staying with my parents living on my father`s pention. 

4. Got married last yr. have no kids. 

5. interested in paying one time alimony. 

My doubt is, how maitainence is fixed? 

if MCD is the court who fixes one time alimony? 

if yes approximatly haw much? in may case? 

Regards/Vikash