SCM-SM: Superposition coded modulation-aided spatial modulation with a low-complexity detector

Xiaotian Zhou*, Liuqing Yang, Cheng-Xiang Wang, Dongfeng Yuan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Spatial modulation (SM) is a spatial multiplexing scheme that utilizes both the signal constellation and antenna index to convey information. In the original SM, traditional modulation schemes such as quadrature amplitude modulation (QAM) are employed for constellation mapping. In this paper, we propose a novel scheme where superposition codedmodulation (SCM) is employed to modulate the information onto the constellation points. We also develop a low-complexity iterative detector for our proposed SCM-SM system. Analysis and simulations demonstrate that SCM-SM significantly outperforms the original SM system with the same data rate while maintaining the relatively low complexity, particularly in the high data rate scenario.

Original languageEnglish
Pages (from-to)2488-2493
Number of pages7
JournalIEEE Transactions on Vehicular Technology
Issue number5
Publication statusPublished - Jun 2014


  • Iterative detection
  • multiple-input-multiple-output (MIMO)
  • spatial modulation (SM)
  • superposition coded modulation (SCM)


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