Abstract
Generalized spatial modulation (GSM) is a modification to conventional spatial modulation scheme which provide the possibility to use any antenna count for transmitter. In GSM, the same information symbol from more than one active antenna is transmitted simultaneously at any instant. GSM combining with spatial multiplexing (GSM-SM) results in the increase in spectral efficiency while increase in the multiple RF chain requirements cost degrade in BER performance. In this paper, the GSM as well as GSM-SM system have been simulated considering channel as uncorrelated and flat fading with generalized $\alpha-\mu$ distributed. The maximum likelihood (ML) method at the receiver is used for detection. The mapping of group data bits to resultant antenna combinations and transmitted symbol vectors for GSM and GSM-SM have been presented with the help of examples. The average bit error rate of the GSM, GSM-SM with different number of active antennas have been evaluated. It is also found that the error rate of GSM-SM is degraded as compared to GSM only.
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