Efficient Implementation of Multiple Interleavers in IDMA for 5G

Abstract

This paper presents an efficient implementation of multiple interleavers in interleave division multiple access (IDMA) for the 5G telecommunication. Rather than focusing on designing a single interleaver efficiently, in this paper, all the interleavers in an IDMA system are designed as a whole. More specifically, the interleaving formulae of multiple interleavers are mapped to a multiple constant multiplication problem, and common subexpressions are eliminated from the adder tree. As a result, the proposed architecture replaces costly multipliers with a similar number of adders, effectively reducing the hardware resources required to implement an IDMA system.