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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...
We investigate the generation of uncorrelated multichannel chaos by electrically heterodyning the chaotic microwave generated from a semiconductor laser. The feasibility of using heterodyned chaos for applications of MIMO chaos radar (MIMO CRADAR) is successfully demonstrated.
Owing to the great advent of sensor technology, the usage data of appliances in a house can be logged and collected easily today. However, it is a challenge for the residents to visualize how these appliances are used. Thus, mining algorithms are much needed to discover appliance usage patterns. Most previous studies on usage pattern discovery are mainly focused on analyzing the patterns of single...
This paper presents a dual-band 4-port diversity antenna for LTE MIMO applications. The antenna element employs a dual-band design covering the 700 MHz band for LTE applications and the 2.4 GHz band for WLAN systems. The presented antenna was implemented on a laptop panel for evaluating the system performances of four-port MIMO configuration in a non-line of sight environment. Correlation coefficient...
A 4-port antenna is designed for evaluating the performance of an MIMO system in indoor environment. Diversity gain, correlation coefficient and channel capacity are calculated and discussed in this paper. The selection diversity becomes more unapparent when using more antennas in MIMO system. Correlation in both rich scattering and high K-factor environment are found below 0.2 and 0.5 respectively...
A simple and compact ultrawideband (UWB) aperture antenna with extended band-notched designs is presented. The antenna consists of a rectangular aperture on a printed circuit board ground plane and a T-shaped exciting stub. The proposed planar coplanar waveguide fed antenna is easy to be integrated with radio-frequency/microwave circuitry for low manufacturing cost. The antenna is successfully designed,...
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