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A Novel Physical Layer Security Approach for Multicarrier Waveforms in 5G IoT
Abstract
5G is expected to support the cellular adaptation of internet of things (IoT) applications for massive connectivity. Due to the massive access nature, IoT is prone to high interception probability and the use of conventional cryptographic techniques in these scenarios is not practical considering the limited computational capabilities of the IoT devices and their power budget. This calls for a lightweight physical layer security scheme which will provide security without much computational overhead and/or strengthen the existing security measures. Here a shift based physical layer security approach is proposed which will not only provide a security with minute changes in existing OFDM based transceiver as per the low complexity, low power requirements of IoT but also improve the bit error rate performance by utilizing the diverse nature of the channel. The scheme will be suitable for most FFT based waveforms which have been proposed in 5G especially massive machine-type communication (mMTC) and ultra-reliable low latency communication (URLLC).
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References
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