In this paper, we study a multiple access scheme referred to as interleave-division
multipleaccess (IDMA), in which interleavers are used as the only means for user
separation. IDMA inherits many advantages from CDMA, such as diversity against fading
and mitigation of the worst-case other-cell user interference problem. A low-cost iterative
chip-by-chip multi-user detection algorithm is described with complexity independent of the
user number and increasing linearly with the path number. The advantages of low-rate …