Wireless Standards on type of Modulation mechanisms over Last Mile acces

Dear all 
 Can anyone point out a list or any websites that carry articles 
on wireless modulation and mechanisms.

regards
mano

Thanks and Best Regards
Have a Great Day
Manohar Menon
Engineer - Wireless Broadband Planning 
Broadband Engineering
Tel 00603 58801697
Fax 00603 58801412
H/p 006 012 2049041

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