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Adaptive Space-Time Block Coded Spatial Modulation Algorithm Based on Constellation Transformation

Fatang Chen, Fanchao Zha, and Hanyan Zhang
Chongqing Key Laboratory of Mobile Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Abstract—In this paper, an Adaptive Space-Time Block Coded Spatial Modulation (ASTBC-SM) algorithm is proposed to improve the system performance under fixed spectral efficiency. The proposed scheme dynamically changes the scaling factor and rotation angle of the constellation used in each codebook according to the known Channel State Information (CSI). The coding gain of Space-Time Block Coded Spatial Modulation (STBC-SM) is also considered to further improve the performance of Bit Error Rate (BER). Moreover, in order to reduce the complexity of ASTBC-SM, a simplified algorithm which takes advantage of the orthogonality of Space-Time Block Coded (STBC) is also proposed. Performance analysis and simulation results show that the proposed ASTBC-SM algorithm can obtain better BER performance compared to traditional STBC-SM algorithm with low computational complexity and small feedback.
 
Index Terms—Adaptive spatial modulation, space-time block coded, constellation transformation, channel state information

Cite: Fatang Chen, Fanchao Zha, and Hanyan Zhang, "Adaptive Space-Time Block Coded Spatial Modulation Algorithm Based on Constellation Transformation," Journal of Communications, vol. 11, no. 11, pp. 1020-1027, 2016. Doi: 10.12720/jcm.11.11.1020-1027
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