Title :
Soft-Decision Star-QAM Aided BICM-ID
Author :
Liang, Dandan ; Ng, Soon Xin ; Hanzo, Lajos
Author_Institution :
Commun. Res. Group, Univ. of Southampton, Southampton, UK
fDate :
3/1/2011 12:00:00 AM
Abstract :
Differentially detected noncoherent Star Quadrature Amplitude Modulation (Star-QAM) is ideal for low-complexity wireless communications, since it dispenses with high-complexity channel estimation. We conceive soft-decision based demodulation for 16-level Star-QAM (16-StQAM), which is then invoked for iterative detection aided Iteratively-Detected Bit-Interleaved Coded Modulation (BICM-ID). It is shown that the proposed 16-StQAM based BICM-ID scheme achieves a coding gain of approximately 14 dBs in comparison to the 16-level identical-throughput Differential Phase-Shift Keying (16DPSK) assisted BICM scheme at a bit error ratio of 10-6.
Keywords :
channel estimation; differential phase shift keying; error statistics; interleaved codes; quadrature amplitude modulation; radio networks; 16-level identical-throughput differential phase-shift keying; 16DPSK; bit error ratio; channel estimation; coding gain; iteratively-detected bit-interleaved coded modulation; soft-decision star-QAM aided BICM-ID; star quadrature amplitude modulation; wireless communication; AWGN; Decoding; Demodulation; Fading; Phase shift keying; Quadrature amplitude modulation; BICM-ID; correlated Rayleigh fading channel; iterative detection; soft-decision; star QAM;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2011.2104951
