Reduced-Complexity Iterative Receiver for Improving the IEEE 802.15.7 Convolutional-Coded Color Shift Keying Mode

摘要

In this letter, we conceive novel symbol-based color-shift keying (CSK)-aided concatenated coding schemes, which provide attractive performance gains over the comparable bit-based systems. Quantitatively, our 4 CSK-aided and 16 CSK-aided symbol-based concatenated systems require 0.8 and 0.45 dB lower SNR than the equivalent bit-based schemes. In terms of decoding complexity, the 4 CSK-aided and 16 CSK-aided systems reduce the decoding complexity by 67% and 33%, respectively. We have also analyzed the convergence behavior of our system with the aid of non-binary extrinsic information transfer charts adapted for symbol-based iterative CSK-assisted systems.