Abstract: A modular multiple bit symbol demapper (1000) that processes pre-detected symbol values for multiple bit symbols. A symmetry of data bit decisions around higher order data bits is used to iteratively fold, by taking an absolute value (1204, 1208) in the exemplary embodiment, pre-detected values around a lower order bit decision point and shifting (1208) the folded values in order to reduce the decision of any arbitrary bit to a BPSK decision. The ultimately reduced BPSK decision is then performed by a standard BPSK soft decision circuit (500), which can be reused for all data bits being detected. Gray coding of the multiple bit symbols allows the data bit decision produced by this processing to be directly used as decided data outputs.