Near-Capacity Irregular Bit-Interleaved Coded Modulation

Abstract— An Irregular Bit-Interleaved Coded Modulation based Iterative Decoding (Ir-BICM-ID) aided scheme is proposed. The irregularity of the scheme pervades the three basic components of BICM-ID, namely the encoder, the unity-rate precoder and the bit-to-symbol mapper. As a result, adaptive BICM-ID schemes constituted by irregular components are created, which are capable of approaching the capacity of coded modulation. This is achieved by creating a narrow EXtrinsic Information Transfer (EXIT) chart, using a novel EXIT curve matching algorithm. The proposed Ir-BICM-ID scheme employs Irregular Convolutional Codes (IrCC), Irregular Unity-Rate Codes (IrURC) and Irregular Mappers (IrMapper).

• Type: Conference
• Year: 2008
• Where: VTC
• Authors: Ronald Y. S. Tee, Robert G. Maunder, Jin Wang, Lajos Hanzo
• Keywords: Bit-interleaved Coded Modulation, Communications, Irregular Components, IRregular Convolutional Codes, VTC 2008