Spatial modulation (SM) and space shift keying (SSK) use only one out of several transmit antennas at a time to transmit data via an antenna index. In such a system, the information is encoded by exploiting channel randomness i.e. the fact that channels between different transmit and receive antennas are random. This difference is used to distinguish among the transmit antennas. While SSK uses only antenna index to transmit data, SM also uses ordinary signal modulation. In wireless secrecy systems, one of the key performance measures is secrecy capacity.
- spatial modulation
- antenna index
- secrecy systems
Sinanovic, S., Serafimovski, N., Di Renzo, M., & Haas, H. (2012). Secrecy capacity of space keying with two antennas. In IEEE 75th Vehicular Technology Conference (VTC Fall), 2012 (pp. 1-5). IEEE. https://doi.org/10.1109/VTCFall.2012.6399113