Bit-interleaved turbo-coded modulations for mobile communications

This paper deals with the study of bandwidth-efficient coding schemes for mobile communications. They are designed from the bit-interleaved coded modulation approach. Since turbo coding technique is utilized for correcting errors, these schemes are termed bit-interleaved turbo-coded modulations (BITCMs). Their structure is presented in a detailed manner and their bit error rate (BER) performance over Rayleigh fading channels is investigated for spectral efficiencies ranging from 2 to 7 bit/s/Hz. Simulation results show that BITCMs are attractive for mobile communications and, in particular, achieve performance being within 1.1 dB of their respective channel capacity at a BER of 10⁻⁵.