Research & Reviews: Journal of Space Science & Technology (RRJoSST)
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Performance Analysis of Space Shift Keying and Quadrature Space Shift Keying for MIMO Channels
Abstract
In wireless communication the propagation channel is characterized by multipath propagation due to scattering on different obstacles. MIMO takes advantage of multi-path and uses multiple antennas to send multiple parallel signals from transmitter. “Multi-path” occurs when different signals arrive at the receiver at various times. MIMO exploits the space dimension to improve wireless systems capacity, range and reliability. There are two different modulation techniques that exploits the best features of MIMO communication and establish reliable wireless connection between MIMO transmitter and MIMO receiver. They are space shift keying (SSK) and quadrature phase shift keying (QSSK). Unlike other modulation techniques where symbols are transmitted, In SSK the antenna index relays information during transmission. This absence of symbol information eliminates the transceiver elements necessary for APM transmission and detection (such as coherent detectors). As well, the simplicity involved in modulation reduces the detection complexity compared to that of spatial modulation (SM), while achieving almost identical performance gains. In this paper, SSK is implemented for MIMO and also compared the results with QSSK under various conditions like increasing the number of transmitting antennas, increasing number of receiving antennas and proved the later has low probability of error.
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References
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