It is widely recognised that the choice of a specific bit-to-symbol mapping scheme or a beneficial constellation labelling is an influential factor, when designing bit-inter-leaved coded modulation using iterative decoding (BICM-ID) for the sake of achieving a high iteration gain. Generally, a larger constellation size of a higher-dimensional space renders the bit-to-symbol mapping design more flexible. In this paper, we first define a flexibility measure based on the extrinsic information transfer (EXIT) characteristics of bit-to-symbol mapping schemes. Secondly, we investigate the effect of expanding the constellation to a higher-dimensional space on our proposed EXIT characteristic flexibility index, when transmitting diverse numbers of bits per joint symbol.
Citation
Alamri, Osamah, Poupart, Blandine, El-Hajjar, Mohammed, Ng, Soon and Hanzo, Lajos (2010) On multidimensional BICM-ID constellation labelling At 2010 IEEE International Conference on Communications (ICC), South Africa. 23 - 27 May 2010. , pp. 1-5. (doi:10.1109/ICC.2010.5502739).
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