The huge demand of wireless communications has driven the requirement
for highly-efficient multiple-access communications schemes that
can accommodate multiple simultaneous users, yet provide performance
similar to single-user systems. Recently, iterative multiuser detection
schemes have shown to provide this high level of performance at a
manageable level of complexity. This thesis is concerned with iterative
detection of two non-orthogonal asynchronous access schemes: codedivision
multiple-access (CDMA); and interleave-division multiple-access
(IDMA).