Ber Performance Comparison Of Space-Shift Keying In Cooperative Multihop Mimo System

Space-shift keying (SSK) is considered for multihop multiple-input-multiple-output (MIMO) networks. In SSK, only one among ns = 2 m available transmit antennas, Here ‘m’ input bits are mapped through antenna index values. The number of bits can be SSK modulated depends on number of transmitter antenna used in MIMO. We consider two different systems of multihop cooperation, where each node has multiple antennas and employs SSK. In system I, a multihop diversity relaying scheme and system II, a multihop multibranch relaying scheme is considered. In both systems, we adopt decode-and-forward (DF) relaying, where each relay forwards the signal only and received signals will be easily reconstructed based on its Euclidean distance values. We analyze the performance of space-shift keying and end-to-end bit error rate (BER) and diversity order of both the systems with SSK. MIMO cooperative multihop relay networks with the maximum available diversity. To prove the efficiency of relay based SSK MIMO over MIMO with phase-shift keying (PSK) modulation, Analyze its performance with various level diversity. Our analytical BER expression is exact, and our numerical results show that the BERs evaluated through the analytical expression. We show the comparison of the BERs of SSK and conventional phase-shift keying (PSK) and also show the instances where SSK outperforms PSK. We also present the diversity analyses for SSK in systems I and II, which predict the achievable diversity orders as a function of system parameters.