IPT devices. Among the available energy harvesting sources, radio frequency signal-based EH finds a viable solution P. Shaik and V. Bhatia Transmit SNR (dB) Fig. 6.8 1x2x2 MIMO AC: Throughput VS SNR [14] for energy-constraint nodes. The state-of-the-art EH with cooperative D2D MIMO relaying in the presence of channel estimation errors including feedback delays and imperfect CSI is addressed. System performance is quantified through system metrics such as outage probability and asymptotic outage probability. Further, actual data delivery rate is analyzed through the throughput analysis for a delay- limited transmission, and useful insights are drawn. Impact of MIMO antennas, fading parameters severity, severity of the feedback error, imperfect CSI, and energy harvesting time constant over the system performance are also analyzed. 6.5.1 Summary A brief summary is as follows: Impact of imperfect CSI and feedback delays over MIMO D2D system with SWIPT is analyzed. System performance is quantified through the outage probability and asymptotic outage probability closed-form expressions. Actual delivered data rate is analyzed through throughput analysis. Results illustrate that the system performance degrades with the increase in a values. However, for smaller values of a, system performs better in both perfect and imperfect CSI scenarios. Results illustrate that for a < 0.4T, system attains low outage probability. 6 Energy Harvested Device-to-Device MIMO Systems for Beyond 5G At high rates, curves demonstrate that the system performance degrades under imperfect CSI conditions. Increase in outdated CSI deteriorates the system performance drastically. Diversity order of the system is lost with a slight increase in CEE, due to SNR independent CEE variance. Impacts of multiple antennas and fading parameters severity along with imperfect CSI are analyzed along with SWIPT. References 1. G. Forecast, Cisco visual networking index: global mobile data traffic forecast update, 2017- 2022. Update 2017, 2022 (2019) 2. P. K. Singya