In this paper we propose a new Multiple-Input Multiple-Output (MIMO) transmission scheme that combines the generalised spatial modulation (GSM) with MIMO spatial multiplexing technique. Unlike the GSM which uses NA active antennas to transmit the same symbol, the proposed scheme uses the N A antennas to transmit different symbols simultaneously, which leads to increase the spectral efficiency of the system. An optimal detector is used at the receiver to jointly estimate the transmitted symbols as well as the index of active antennas combination. However, the optimal detector suffers from a high computational complexity. To solve this problem we propose a suboptimal detector which is based on a zero forcing detector. The performance of the proposed scheme is evaluated in an uncorrelated flat fading channel and compared with the optimal spatial modulation and vertical Bell Labs layered space-time.

Additional Metadata
Keywords Antennas Combination, Maximum Likelihood detection, MIMO systems, Spatial Modulation, Spatial Multiplexing
Persistent URL dx.doi.org/10.1109/ICCSPA.2013.6487232
Conference 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013
Citation
Legnain, R.M. (Rajab M.), Hafez, R, Marsland, I, & Legnain, A.M. (Abdelgader M.). (2013). A novel spatial modulation using MIMO spatial multiplexing. Presented at the 2013 1st International Conference on Communications, Signal Processing and Their Applications, ICCSPA 2013. doi:10.1109/ICCSPA.2013.6487232