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Internet-of-Things (IoT) applications grew rapidly in recent years. Deployment of massive machine-type communication (mMTC) with scalability and reliability becomes a challenging issue. The feature of activity sparsity in mMTC devices makes room for us to efficiently handle detection by compressive sensing (CS)-based multi-user detection (CS-MUD). However, the limited resource, such as the design...
To leverage multiplexing gain, a hybrid beamforming architecture transmitting multiple data streams is widely adopted for Millimeter wave (mmWave) channel. However, for ultra-low latency mmWave communication, the hybrid design must require the development of instantaneous channel estimation. In this paper, we reveal a novel idea of progressive channel estimation through iteratively refining multiple...
Millimeter wave (mmWave) communication system provides large unlicensed spectrum which helps to achieve huge capacity leap in the next-generation wireless system. The capacity is further improved by precoding technique in multiple-input-multiple-output (MIMO) transmission systems. Although the adoption of large antenna arrays in mmWave transceivers mitigates the huge path loss, it also increases hardware...
Rapid growth in the number of users (largely sensor nodes) of most Internet-of-Things (IoT) applications is widely expected in recent years. 3G or 4G protocols are designed for regular Human-to-Human communication purposes instead of low-rate, Machine-to-Machine (M2M) communication, which is the basis of IoT. Comparatively, traditional spread-spectrum protocols such as Code-Division Multiple Access...
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