The data transfer between devices should be prominent in the future generations for Internet of Things (IoT) applications. IoT systems need a sophisticated communication setup with less hardware and complexity. Space Shift Keying (SSK) modulation is the perfect scheme to fulfill IoT system requirements by activating a single antenna. Moreover, Cooperative communication has more reliability in point-to-point communication by the relaying system. Thus, end-to-end Bit Error Rate (BER) in the multi-hop multi-branch relaying model under cooperative communication scenario using SSK modulation scheme for IoT systems is analyzed. The closed-form expression for BER is derived over Nakagami-m fading channels and the results are verified with Monte Carlo simulation.