Title :
Low-complexity LDPC coded BICM-ID with orthogonal modulations
Author :
Che, Shenyun ; Tong, Shaocheng
Author_Institution :
State Key Lab. of ISN, Xidian Univ., China
Abstract :
A low-complexity low density parity check (LDPC) coded bit-interleaved coded modulation with iterative decoding (BICM-ID) scheme with orthogonal modulations is proposed. With a novel mapping strategy of coded bits to symbols, the proposed scheme is equivalent to a generalised LDPC code with Hadamard constraints and thus orthogonal demodulation can be merged into the iterative LDPC decoding process, resulting in a simpler implementation and a lower computational complexity.
Keywords :
Hadamard codes; interleaved codes; iterative decoding; modulation coding; orthogonal codes; parity check codes; BICM-ID; Hadamard constraint; bit-interleaved coded modulation; computational complexity; generalised LDPC code; iterative decoding; low-complexity low density parity check code; mapping strategy; orthogonal modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.0521