GDL

Journal from gdlhub / 2021-01-20 15:24:36
Oleh : Vian S. Al-Doori, Emad H. Al-Hemiary, Telkomnika
Dibuat : 2021-01-13, dengan 1 file

Keyword : index modulation; MISO-OFDM-SM; OFDM; spatial modulation (SM)
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/13873
Sumber pengambilan dokumen : web

Index modulation is one of the promising techniques for future communications systems due to many improvement over the classical Orthogonal frequency division multiplexing systems such as single RF chain, increased throughput for the same modulation order, achieved tradeoff between the efficiencies of the power and the spectral, and elimination of inter-channel interference. Many forms of index modulation researches exist where symbols are conveyed in antennas, subcarriers, time slots, and the space-time matrix. Spatial modulation is one member of index modulation family where symbols are conveyed in activating transmit/receive antennas. In this paper, a modification to a standard multiple input single output scheme by integrating spatial modulation using simplified mathematical procedure is achieved. In the transmitter side, data and activation symbols are distributed simultaneously using mathematical module and floor functions. At the receiver, a simplified maximum likelihood detector is used to obtain transmitted pair of symbols. To verify this, MATLAB SIMULINK is used to simulate a downlink system where spatial modulation is applied to a base station. Results for different transmit antenna number and modulation order are obtained in the form of bit error rate versus signal to noise ratio.

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