4D-128(64) TCM Mar 31, 2005 3:11:20 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Oliver on Mar 31, 2005 3:11:20 GMT -5 Do know anybody about QAM 128,64 constellations and 4-D TCM coder-decoder implemented at Siemens SRT1 (microwave radiorelay system)?